CN110543576B - Method and system for automatically classifying multimedia files in Internet mobile terminal - Google Patents

Method and system for automatically classifying multimedia files in Internet mobile terminal Download PDF

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CN110543576B
CN110543576B CN201910820347.3A CN201910820347A CN110543576B CN 110543576 B CN110543576 B CN 110543576B CN 201910820347 A CN201910820347 A CN 201910820347A CN 110543576 B CN110543576 B CN 110543576B
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multimedia file
virtual folder
content description
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CN110543576A (en
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Shandong Dingniu Prism Network Technology Co ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/17—Details of further file system functions
    • G06F16/172—Caching, prefetching or hoarding of files
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/18—File system types
    • G06F16/188—Virtual file systems
    • G06F16/192—Implementing virtual folder structures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/41—Indexing; Data structures therefor; Storage structures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/45—Clustering; Classification
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/48—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually

Abstract

The invention discloses a method and a system for automatically classifying multimedia files in an internet mobile terminal, wherein the method comprises the following steps: acquiring a plurality of content description items of a multimedia file, and performing keyword division on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item; creating a new storage area in a memory of the mobile terminal; after receiving an instruction for automatically classifying the multimedia files, the mobile terminal stores each acquired new multimedia file in a file cache region, records the cache starting time of each new multimedia file stored in the file cache region, and generates summary information for each new multimedia file; each of a plurality of multimedia files that have been stored in an original storage area in a memory of the mobile terminal is treated as an original multimedia file to be classified.

Description

Method and system for automatically classifying multimedia files in Internet mobile terminal
Technical Field
The present invention relates to the field of mobile internet, and more particularly, to a method and system for automatically classifying multimedia files in a mobile terminal in mobile internet.
Background
At present, with the rapid development of the mobile internet, more and more mobile terminals perform information interaction based on the mobile internet. As functions of various applications are more and more sophisticated and rich, various types of multimedia files, such as video, audio, and the like, stored in mobile terminals are more and more. However, at present, in the related art, there is no technology for properly classifying based on characteristics of multimedia files in a mobile terminal within the internet mobile internet.
Disclosure of Invention
According to an aspect of the present invention, there is provided a method of automatically classifying a multimedia file in an internet mobile terminal, the method comprising:
when an instruction for automatically classifying multimedia files in a mobile terminal in the mobile internet is received, acquiring a plurality of content description items of the multimedia files, allocating a virtual folder to each content description item, setting a folder identifier for each virtual folder, performing keyword division on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item, and determining a main subject term or a plurality of secondary subject terms in the plurality of subject terms;
creating a new memory area in a memory of the mobile terminal, the new memory area comprising: the mobile terminal comprises a file cache region, a classification identification storage region and a non-classification storage region, wherein the file cache region is used for storing new multimedia files acquired by the mobile terminal after receiving an instruction for automatically classifying the multimedia files, a corresponding storage unit is established for each virtual folder in the classification identification storage region, each storage unit is used for storing associated information associated with the belonged virtual folder, and the non-classification storage region is used for storing multimedia files which do not belong to any virtual folder;
after receiving an instruction for automatically classifying the multimedia files, the mobile terminal stores each acquired new multimedia file in a file cache region, records the cache starting time of each new multimedia file stored in the file cache region, and generates summary information for each new multimedia file;
each of a plurality of multimedia files that have been stored in an original storage area in a memory of the mobile terminal before receiving an instruction to automatically classify the multimedia file is treated as an original multimedia file to be classified.
Classifying each of a plurality of multimedia files that have been stored in an original storage area in a memory of the mobile terminal before receiving an instruction to automatically classify the multimedia file as an original multimedia file includes:
performing association degree calculation on the summary information of the original multimedia file and a plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item, and determining whether the maximum association degree in the association degrees of the original multimedia file and each content description item is greater than a first association degree threshold value:
if so, taking the content description item with the maximum relevance degree with the original multimedia file as the attribution content description item of the original multimedia file, determining a virtual folder associated with the attribution content description item of the original multimedia file, constructing an associated binary group by using the folder identifier of the virtual folder and the identifier of the original multimedia file, wherein the format of the associated binary group is < the identifier of the original multimedia file and the folder identifier of the virtual folder >, and storing each associated binary group in a plurality of associated binary groups into a storage unit of the corresponding virtual folder according to the folder identifier of the virtual folder so as to form associated information associated with the corresponding virtual folder by the associated binary group;
if not, the original multimedia file is moved from the original storage area to the classless storage area as unclassified multimedia files and the classification start time at which each unclassified multimedia file is stored in the classless storage area is recorded.
When the classification processing of all the original multimedia files is completed, a folder identifier of a virtual folder in an associated binary group in the associated information of each storage unit of the classification identification storage area is used as the classification description information of each original multimedia file in each storage unit, so as to indicate the virtual folder to which each original multimedia file belongs by using the classification description information without changing the storage location of each original multimedia file and thus determine a plurality of multimedia files each of which includes.
When the storage time of a new multimedia file stored in the file cache region reaches a first time threshold value based on the cache start time, performing association calculation on summary information of the new multimedia file and a plurality of subject terms of each content description item to determine the association degree of the new multimedia file and each content description item, determining the average association degree of the new multimedia file and the plurality of content description items based on the association degree of the new multimedia file and each content description item, when the average association degree of the new multimedia file and the plurality of content description items is greater than or equal to a second association degree threshold value, regarding a content description item with the maximum association degree with the new multimedia file as a home content description item of the new multimedia file, determining a virtual folder associated with the home content description item of the new multimedia file, regarding an identifier of the virtual folder associated with the home content description item of the new multimedia file as classification description information of the new multimedia file, so as to indicate a home virtual folder to which the new multimedia file belongs by using the classification description information and move the new multimedia file to an original storage region;
when the average degree of association of the new multimedia file with the plurality of content description items is less than the degree of association threshold, moving the new multimedia file to the non-classified storage area as an unclassified multimedia file and recording the classification start time at which each unclassified multimedia file is stored in the non-classified storage area, recommending at least one virtual folder for each unclassified multimedia file according to the digest information of each unclassified multimedia file in the non-classified storage area, and using the identifier of each recommended virtual folder as the recommendation information of the unclassified multimedia file in the non-classified storage area to indicate at least one recommended virtual folder for each unclassified multimedia file and thus determine the recommended at least one unclassified multimedia file included by the virtual folder.
When a target multimedia file in a plurality of multimedia files in a specific virtual folder is browsed or used in the mobile terminal, performing associated display on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder, and acquiring associated indication information for each recommended at least one unclassified multimedia file included in the specific virtual folder;
when the storage time of the unclassified multimedia files in the unclassified storage area reaches a second time threshold value based on the classification starting time, counting all the associated indication information associated with the unclassified multimedia files, determining the virtual folders to which the unclassified multimedia files belong according to the counting result, and using the identifiers of the belonged virtual folders as the classification description information of the unclassified multimedia files so as to indicate the virtual folders to which the unclassified multimedia files belong by using the classification description information.
According to another aspect of the present invention, there is provided a system for automatically classifying multimedia files in an internet mobile terminal, the system comprising:
the distribution device is used for acquiring a plurality of content description items of the multimedia file when receiving an instruction for automatically classifying the multimedia file in the mobile terminal in the mobile internet, distributing a virtual folder for each content description item, setting a folder identifier for each virtual folder, performing keyword division on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item, and determining a main subject term or a plurality of secondary subject terms in the plurality of subject terms;
creating means for creating a new storage area in a memory of the mobile terminal, the new storage area including: the mobile terminal comprises a file cache region, a classification identification storage region and a non-classification storage region, wherein the file cache region is used for storing new multimedia files acquired by the mobile terminal after receiving an instruction for automatically classifying the multimedia files, a corresponding storage unit is established for each virtual folder in the classification identification storage region, each storage unit is used for storing associated information associated with the belonged virtual folder, and the non-classification storage region is used for storing multimedia files which do not belong to any virtual folder;
the generating device is used for storing each acquired new multimedia file in the file cache region and recording the cache starting time of each new multimedia file stored in the file cache region after receiving the instruction of automatically classifying the multimedia files, and generating summary information for each new multimedia file;
and a classifying means for classifying each of the plurality of multimedia files, which have been stored in an original storage area in a memory of the mobile terminal before receiving the instruction to automatically classify the multimedia file, as an original multimedia file.
The classification device calculates the association degree of the summary information of the original multimedia file and a plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item, and determines whether the maximum association degree of the association degrees of the original multimedia file and each content description item is greater than a first association degree threshold value:
if so, taking the content description item with the maximum relevance degree with the original multimedia file as the attribution content description item of the original multimedia file, determining a virtual folder associated with the attribution content description item of the original multimedia file, constructing an associated binary group by using the folder identifier of the virtual folder and the identifier of the original multimedia file, wherein the format of the associated binary group is < the identifier of the original multimedia file and the folder identifier of the virtual folder >, and storing each associated binary group in a plurality of associated binary groups into a storage unit of the corresponding virtual folder according to the folder identifier of the virtual folder so as to form associated information associated with the corresponding virtual folder by the associated binary group;
if not, the original multimedia file is moved from the original storage area to the classless storage area as unclassified multimedia files and the classification start time at which each unclassified multimedia file is stored in the classless storage area is recorded.
When the classification processing of all the original multimedia files is completed, a folder identifier of a virtual folder in an associated binary group in the associated information of each storage unit of the classification identification storage area is used as the classification description information of each original multimedia file in each storage unit, so as to indicate the virtual folder to which each original multimedia file belongs by using the classification description information without changing the storage location of each original multimedia file and thus determine a plurality of multimedia files each of which includes.
The processing device is further used for performing association degree calculation on the summary information of the new multimedia file and a plurality of subject terms of each content description item to determine the association degree of the new multimedia file and each content description item when the storage time of the new multimedia file stored in the file cache region reaches a first time threshold value based on the cache start time, determining the average association degree of the new multimedia file and the plurality of content description items based on the association degree of the new multimedia file and each content description item, determining a virtual folder associated with the home content description item of the new multimedia file when the average association degree of the new multimedia file and the plurality of content description items is greater than or equal to a second association degree threshold value, taking the content description item with the maximum association degree of the new multimedia file as the home content description item of the new multimedia file, taking the identifier of the virtual folder associated with the home content description item of the new multimedia file as the classification description information of the new original multimedia file, indicating the virtual folder to which the new multimedia file belongs by using the classification description information, and moving the new multimedia file to the storage region of the new multimedia file;
when the average association degree of the new multimedia file and the plurality of content description items is smaller than the association degree threshold value, moving the new multimedia file to the non-classified storage area to serve as an unclassified multimedia file and recording the classification starting time when each unclassified multimedia file is stored in the non-classified storage area, recommending at least one virtual folder for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the non-classified storage area, and using the identifier of each recommended virtual folder as the recommendation information of the unclassified multimedia file in the non-classified storage area to indicate at least one recommended virtual folder for each unclassified multimedia file and accordingly determining at least one recommended unclassified multimedia file included by the virtual folder;
when the storage time of the unclassified multimedia files in the unclassified storage area reaches a second time threshold value based on the classification starting time, counting all the associated indication information associated with the unclassified multimedia files, determining the virtual folders to which the unclassified multimedia files belong according to the counting result, and using the identifiers of the belonged virtual folders as the classification description information of the unclassified multimedia files so as to indicate the virtual folders to which the unclassified multimedia files belong by using the classification description information.
The mobile terminal further comprises a display device, when a target multimedia file in the plurality of multimedia files in the specific virtual folder is browsed or used in the mobile terminal, all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated mode, and association indication information aiming at each recommended at least one unclassified multimedia file included in the specific virtual folder is obtained.
Drawings
Fig. 1 is a flowchart of a method of automatically classifying multimedia files in an internet mobile terminal according to the present invention;
fig. 2 is a schematic structural diagram of a system for automatically classifying multimedia files in an internet mobile terminal according to the present invention.
Detailed Description
Fig. 1 is a flowchart of a method 100 for automatically classifying multimedia files in an internet mobile terminal according to the present invention. As shown in fig. 1, method 100 begins at step 101. In step 101, when an instruction for automatically classifying a multimedia file in a mobile terminal in the mobile internet is received, acquiring a plurality of content description items of the multimedia file, allocating a virtual folder to each content description item, setting a folder identifier for each virtual folder, performing keyword segmentation on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item, and determining a main subject term or a plurality of secondary subject terms in the plurality of subject terms;
the multimedia files comprise video files, audio files and image files; wherein the plurality of content description items of the multimedia file are generated by a user of the mobile terminal or the plurality of content description items of the multimedia file are generated by an operating system of the mobile terminal. Each content description item is description information made up of information associated with time, place, content, and subject. The memory of the mobile terminal stores a plurality of multimedia files. A virtual folder is a folder that does not need to be created truly; the virtual folder provides services for each content description item by using the association relation; the folder identifier can uniquely identify the virtual folder. The virtual folder is associated with the plurality of multimedia files within the virtual folder, but each of the plurality of multimedia files within the virtual folder is still stored at an initial location and is not copied or moved into the virtual folder by the association with the virtual folder.
Performing keyword segmentation on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item comprises: each content description item in the plurality of content description items is subjected to keyword division, information associated with time and information associated with places are both used as subject words, all nouns in the information associated with the content are used as subject words, and all nouns in the information associated with the subject are used as subject words, and therefore the plurality of subject words related to each content description item are determined.
Determining a main subject term or a plurality of secondary subject terms from a plurality of subject terms according to a selection rule preset by a user of the mobile terminal; or determining a main subject word or a plurality of secondary subject words from a plurality of subject words according to the selection rule of the operating system of the mobile terminal. The main subject term is information associated with time or information associated with place. The main subject term is one of all nouns in the information associated with the content; or one of all nouns in the information associated with the topic. The secondary topic words are all other topic words of the plurality of topic words except for one primary topic word.
In step 102, a new memory area is created in the memory of the mobile terminal, the new memory area comprising: the mobile terminal comprises a file cache region, a classification identification storage region and a non-classification storage region, wherein the file cache region is used for storing new multimedia files acquired by the mobile terminal after receiving an instruction for automatically classifying the multimedia files, a corresponding storage unit is established for each virtual folder in the classification identification storage region, each storage unit is used for storing associated information associated with the belonged virtual folder, and the non-classification storage region is used for storing multimedia files which do not belong to any virtual folder;
the mobile terminal memory includes an original memory area for storing multimedia files that have been stored in the memory before receiving an indication of automatic classification of multimedia files in the mobile terminal within the mobile internet and a new memory area. The classification identification storage area comprises a plurality of storage units, each storage unit corresponds to one virtual folder, and the number of the storage units is the same as that of the virtual folders.
After receiving the instruction for automatically classifying the multimedia files, the mobile terminal stores each new multimedia file in the file buffer and records the start time of the buffer of each new multimedia file stored in the file buffer, and generates summary information for each new multimedia file in step 103.
Generating summary information for each new multimedia file includes: generating summary information according to the introduction information of each new multimedia file, or summarizing the introduction information of each new multimedia file to generate the summary information; or summarize the file content of each new multimedia file to generate summary information; or extracting information of the file content of each new multimedia file to generate summary information.
In step 104, each multimedia file of the plurality of multimedia files that has been stored in an original storage area in a memory of the mobile terminal before receiving the indication to automatically classify the multimedia file is classified as an original multimedia file:
and performing association degree calculation on the abstract information of the original multimedia file and a plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item, and determining whether the maximum association degree in the association degrees of the original multimedia file and each content description item is greater than a first association degree threshold value.
The calculating the association degree of the abstract information of the original multimedia file and the plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item comprises the following steps: calculating the association degree between the abstract information of the original multimedia file and the main subject term of each content description item to determine the association degree KA between the original multimedia file and the main subject term of each content description item i ；
Performing association calculation on the abstract information of the original multimedia file and each secondary subject term of each content description item to determine the association degree of the original multimedia file and each secondary subject term of each content description item, and determining the average association degree PA of the original multimedia file and all the secondary subject terms of each content description item based on the association degree of the original multimedia file and each secondary subject term of each content description item i ，
Degree of association A of the original multimedia file with each content description item i ＝α×KA i +β×PA i ；
N is more than or equal to i and more than or equal to 1, wherein i and N are natural numbers, N is the number of content description items, A i The association degree of the original multimedia file and the ith content description item is obtained; KA i The association degree of the original multimedia file and the main subject term of the ith content description item; PA i For all secondary topics of the original multimedia file and the ith content description itemAverage degree of association of the words;
wherein 1> α >0;1> β >0, and α + β =1;
for example, α =0.75, β =0.25, α =0.5, β =0.5, α =0.25, β =0.75.
Wherein classifying each of the plurality of multimedia files, which have been stored in an original storage area in a memory of the mobile terminal before receiving the instruction to automatically classify the multimedia file, as an original multimedia file is as follows: each of a plurality of multimedia files that have been stored in an original storage area in a memory of the mobile terminal before receiving an instruction to automatically classify the multimedia file is treated as an original multimedia file and a classification process is performed for each original multimedia file. The first relevancy threshold is 50%, 60%, 70%, 80%, or 90%;
if so, taking the content description item with the maximum degree of association with the original multimedia file as the attribution content description item of the original multimedia file, determining a virtual folder associated with the attribution content description item of the original multimedia file, constructing an associated binary group by using the folder identifier of the virtual folder and the identifier of the original multimedia file, wherein the format of the associated binary group is < the identifier of the original multimedia file and the folder identifier of the virtual folder >, and storing each associated binary group in a plurality of associated binary groups into a storage unit of a corresponding virtual folder according to the folder identifier of the virtual folder so as to form associated information associated with the corresponding virtual folder by the associated binary group;
if not, the original multimedia file is moved from the original storage area to the classless storage area as unclassified multimedia files and the classification start time at which each unclassified multimedia file is stored in the classless storage area is recorded.
The association information associated with the respective virtual folder includes a plurality of association duplets, and the folder identifier of the virtual folder in each association duplet is the folder identifier of the respective virtual folder. The association information associated with the corresponding virtual folder is used to record or indicate a plurality of original multimedia files associated with the corresponding virtual folder, or the association information associated with the corresponding virtual folder is used to record or indicate a plurality of original multimedia files included in the corresponding virtual folder.
When the classification processing of all the original multimedia files is completed, taking a folder identifier of a virtual folder in an associated binary group in the associated information of each storage unit of the classification identification storage area as the classification description information of each original multimedia file in each storage unit, so as to indicate the virtual folder to which each original multimedia file belongs by using the classification description information without changing the storage location of each original multimedia file and thus determine a plurality of multimedia files each of which includes;
at step 105, when it is determined that the storage time of the new multimedia file stored in the file cache region reaches a first time threshold based on the cache start time, performing association calculation on summary information of the new multimedia file and a plurality of subject terms of each content description item to determine an association degree of the new multimedia file and each content description item, determining an average association degree of the new multimedia file and the plurality of content description items based on the association degree of the new multimedia file and each content description item, when the average association degree of the new multimedia file and the plurality of content description items is greater than or equal to a second association degree threshold, regarding a content description item with the highest association degree with the new multimedia file as a belonging content description item of the new multimedia file, determining a virtual folder associated with the belonging content description item of the new multimedia file, regarding an identifier of the virtual folder associated with the belonging content description item of the new multimedia file as classification description information of the new multimedia file, so as to indicate the virtual file to which the new multimedia file belongs by using the classification description information and moving the new multimedia file to the original storage region;
after the classification process is completed, adding classification description information to the original multimedia file associated with the virtual folder, the classification description information being a folder identifier of the virtual folder to which the original multimedia file belongs. Determining the storage time of a new multimedia file stored in the file cache region based on the current time and the cache start time; and determining the time interval between the current time and the caching start time as the storage time of the new multimedia file stored in the file cache region. The first time threshold is: 5 hours, 10 hours, 20 hours, 30 hours, 50 hours, 100 hours, 300 hours, or 720 hours.
The calculating the association degree of the summary information of the new multimedia file and the plurality of subject terms of each content description item to determine the association degree of the new multimedia file and each content description item comprises the following steps: and calculating the association degree of the summary information of the new multimedia file and each subject term in the plurality of subject terms of each content description item to determine the association degree of the new multimedia file and each subject term of each content description item, determining the average association degree of the new multimedia file and all the subject terms of each content description item based on the association degree of the new multimedia file and each subject term of each content description item, and determining the average association degree of the new multimedia file and all the subject terms of each content description item as the association degree of the new multimedia file and each content description item. The second relevancy threshold is 40%, 50%, 60%, 70%, or 80%.
At step 106, when the average degree of association of the new multimedia file with the plurality of content description items is less than the threshold degree of association, moving the new multimedia file to the non-classified storage area as an unclassified multimedia file and recording the classification start time at which each unclassified multimedia file is stored in the non-classified storage area, recommending at least one virtual folder for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the non-classified storage area, and using the identifier of each recommended virtual folder as the recommendation information of the unclassified multimedia file in the non-classified storage area to indicate the recommended at least one virtual folder for each unclassified multimedia file and thus determine the recommended at least one unclassified multimedia file included by the virtual folder;
recommending at least one virtual folder for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the unclassified storage area comprises: performing association degree calculation on the summary information of the unclassified multimedia file and each subject term in the plurality of subject terms of each content description item to determine the association degree of the unclassified multimedia file and each subject term of each content description item, determining the average association degree of the unclassified multimedia file and all the subject terms of each content description item based on the association degree of the unclassified multimedia file and each subject term of each content description item, and determining at least one content description item of which the average association degree with the unclassified multimedia file is greater than a third association degree threshold value as at least one recommended content description item of the unclassified multimedia file. Determining a virtual folder associated with each of the at least one recommended content description item as a recommended virtual folder of the unclassified multimedia file, thereby recommending at least one virtual folder for each unclassified multimedia file; or, replacing at least one virtual folder recommended for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the unclassified storage area with: at least one virtual folder is randomly recommended for each unclassified multimedia file from among the plurality of virtual folders. The third correlation threshold is 40%, 50%, 60%, 70%, or 80%.
In step 107, when a target multimedia file of the plurality of multimedia files in the specific virtual folder is browsed or used in the mobile terminal, all other multimedia files except the target multimedia file of the plurality of multimedia files in the specific virtual folder are displayed in an associated manner, and association indication information for each recommended at least one unclassified multimedia file included in the specific virtual folder is acquired.
All other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated way as follows: and performing preview-type associated presentation on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder in a preview area.
All other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated way as follows: and carrying out abbreviation type associated presentation on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder in the preview area.
All other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated way as follows: and performing small icon type associated display on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder in the preview area. Generating, by a user of the mobile terminal, association indication information for the recommended at least one unclassified multimedia file. The format of the association indication information is < folder identifier, relevance of virtual folder >; wherein the correlation includes: file related or file unrelated.
In step 108, when it is determined that the storage time of the unclassified multimedia files in the unclassified storage area reaches the second time threshold based on the classification start time, counting all the association indication information associated with the unclassified multimedia files, determining the virtual folder to which the unclassified multimedia files belong according to the counting result, and using the identifier of the belonged virtual folder as the classification description information of the unclassified multimedia files to indicate the virtual folder to which the unclassified multimedia files belong by using the classification description information.
Determining the storage time of the unclassified multimedia files in the unclassified storage area based on the current time and the classification starting time; the time interval between the current time and the classification start time is determined as the storage time of the unclassified multimedia file in the unclassified storage region. The second time threshold is: 5 hours, 10 hours, 20 hours, 30 hours, 50 hours, 100 hours, 300 hours, or 720 hours.
Counting all association indication information associated with the unclassified multimedia files includes: and counting all the associated indication information associated with the unclassified multimedia files according to the folder identifiers of the virtual folders to acquire the total quantity of the associated indication information associated with the unclassified multimedia files and each virtual folder in the plurality of virtual folders and the related quantity of the associated indication information with the content of the files.
Determining the virtual folder to which the unclassified multimedia file belongs according to the statistical result comprises: and determining the virtual folder with the maximum ratio of the relevant number to the total number in the plurality of virtual folders as the virtual folder to which the unclassified multimedia file belongs.
Fig. 2 is a schematic structural diagram of a system 200 for automatically classifying multimedia files in an internet mobile terminal according to the present invention. The system 200 includes: the system comprises an allocation device 201, a creation device 202, a generation device 203, a classification device 204, a processing device 205 and a presentation device 206. The distribution device 201, when receiving an instruction for automatically classifying the multimedia file in the mobile terminal in the mobile internet, obtains a plurality of content description items of the multimedia file, distributes a virtual folder for each content description item, sets a folder identifier for each virtual folder, performs keyword division on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item, and determines a main subject term or a plurality of secondary subject terms in the plurality of subject terms.
The multimedia files comprise video files, audio files and image files; wherein the plurality of content description items of the multimedia file are generated by a user of the mobile terminal or the plurality of content description items of the multimedia file are generated by an operating system of the mobile terminal. Each content description item is description information made up of information associated with time, place, content, and subject. A plurality of multimedia files are stored in a memory of the mobile terminal. A virtual folder is a folder that does not need to be created truly; the virtual folder provides services for each content description item by using the association relation; the folder identifier can uniquely identify the virtual folder. The virtual folder has an association with the plurality of multimedia files within the virtual folder, but each of the plurality of multimedia files within the virtual folder is still stored at an initial location and is not copied or moved into the virtual folder because of the association with the virtual folder.
Performing keyword segmentation on each content description item in the plurality of content description items to determine a plurality of subject terms to which each content description item relates comprises: each content description item in the plurality of content description items is subjected to keyword division, information associated with time and information associated with places are both used as subject words, all nouns in the information associated with the content are used as the subject words, and all nouns in the information associated with the subjects are used as the subject words, and therefore the plurality of subject words related to each content description item are determined.
Determining a main subject term or a plurality of secondary subject terms from a plurality of subject terms according to a selection rule preset by a user of the mobile terminal; or determining a main subject word or a plurality of secondary subject words from a plurality of subject words according to the selection rule of the operating system of the mobile terminal. The main subject term is information associated with time or information associated with place. The main subject term is one of all nouns in the information associated with the content; or one of all nouns in the information associated with the topic. The secondary topic words are all other topic words of the plurality of topic words except for one primary topic word.
Creating means 202 for creating a new storage area in the memory of the mobile terminal, the new storage area including: the mobile terminal comprises a file cache region, a classification identification storage region and a non-classification storage region, wherein the file cache region is used for storing new multimedia files acquired by the mobile terminal after receiving an instruction for automatically classifying the multimedia files, a corresponding storage unit is created in the classification identification storage region for each virtual folder, each storage unit is used for storing associated information associated with the belonged virtual folder, and the non-classification storage region is used for storing multimedia files which do not belong to any virtual folder.
The memory of the mobile terminal includes an original storage area for storing multimedia files that have been stored in the memory before receiving an indication of automatic classification of multimedia files in the mobile terminal within the mobile internet, and a new storage area. The classification identification storage area comprises a plurality of storage units, each storage unit corresponds to one virtual folder, and the number of the storage units is the same as that of the virtual folders.
The generating device 203, after receiving the instruction for automatically classifying the multimedia files, the mobile terminal stores each acquired new multimedia file in the file buffer area and records the starting time of the buffer storage of each new multimedia file in the file buffer area, and generates summary information for each new multimedia file.
Generating summary information for each new multimedia file includes: generating summary information according to the introduction information of each new multimedia file, or summarizing the introduction information of each new multimedia file to generate the summary information; or summarizing the file content of each new multimedia file to generate summary information; or extracting information of the file content of each new multimedia file to generate summary information.
A classifying means 204 for classifying each of the plurality of multimedia files, which have been stored in an original storage area in a memory of the mobile terminal before receiving the instruction to automatically classify the multimedia file, as an original multimedia file:
and performing association degree calculation on the abstract information of the original multimedia file and a plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item, and determining whether the maximum association degree in the association degrees of the original multimedia file and each content description item is greater than a first association degree threshold value.
The step of calculating the association degree of the summary information of the original multimedia file and the plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item comprises the following steps: calculating the association degree between the abstract information of the original multimedia file and the main subject term of each content description item to determine the association degree KA between the original multimedia file and the main subject term of each content description item i ；
Performing association degree calculation on the abstract information of the original multimedia file and each secondary subject term of each content description item to determine the association degree of the original multimedia file and each secondary subject term of each content description item, and determining the average association degree PA of the original multimedia file and all the secondary subject terms of each content description item based on the association degree of the original multimedia file and each secondary subject term of each content description item i ，
Degree of association A of the original multimedia file with each content description item i ＝α×KA i +β×PA i ；
N ≧ i ≧ 1, where i and N are both natural numbers, N is the number of content description items, A i The association degree of the original multimedia file and the ith content description item is obtained; KA i The association degree of the original multimedia file and the main subject term of the ith content description item; PA i Average degree of association of original multimedia file and all secondary subject terms of ith content description item;
wherein 1> α >0;1> β >0, and α + β =1;
for example, α =0.75, β =0.25, α =0.5, β =0.5, α =0.25, β =0.75.
Wherein classifying each of the plurality of multimedia files, which have been stored in an original storage area in a memory of the mobile terminal before receiving the instruction to automatically classify the multimedia file, as an original multimedia file is: each of a plurality of multimedia files that have been stored in an original storage area in a memory of the mobile terminal before receiving an instruction to automatically classify the multimedia file is treated as an original multimedia file and a classification process is performed for each original multimedia file. The first relevancy threshold is 50%, 60%, 70%, 80%, or 90%;
if so, taking the content description item with the maximum relevance degree with the original multimedia file as the attribution content description item of the original multimedia file, determining a virtual folder associated with the attribution content description item of the original multimedia file, constructing an associated binary group by using the folder identifier of the virtual folder and the identifier of the original multimedia file, wherein the format of the associated binary group is < the identifier of the original multimedia file and the folder identifier of the virtual folder >, and storing each associated binary group in a plurality of associated binary groups into a storage unit of the corresponding virtual folder according to the folder identifier of the virtual folder so as to form associated information associated with the corresponding virtual folder by the associated binary group;
if not, the original multimedia file is moved from the original storage area to the classless storage area as an unclassified multimedia file and the classification start time at which each unclassified multimedia file is stored in the classless storage area is recorded.
The association information associated with the respective virtual folder includes a plurality of association duplets, and the folder identifier of the virtual folder in each association duplet is the folder identifier of the respective virtual folder. The association information associated with the corresponding virtual folder is used to record or indicate a plurality of original multimedia files associated with the corresponding virtual folder, or the association information associated with the corresponding virtual folder is used to record or indicate a plurality of original multimedia files included in the corresponding virtual folder.
When the classification processing of all the original multimedia files is completed, taking a folder identifier of a virtual folder in an associated binary group in the associated information of each storage unit of the classification identification storage area as the classification description information of each original multimedia file in each storage unit, so as to indicate the virtual folder to which each original multimedia file belongs by using the classification description information without changing the storage location of each original multimedia file and thus determine a plurality of multimedia files each of which includes;
processing means 205, when it is determined based on the cache start time that the storage time of the new multimedia file stored in the file cache region reaches a first time threshold, performing association calculation on the summary information of the new multimedia file and the plurality of subject terms of each content description item to determine an association degree of the new multimedia file with each content description item, determining an average association degree of the new multimedia file and the plurality of content description items based on the association degree of the new multimedia file with each content description item, when the average association degree of the new multimedia file and the plurality of content description items is greater than or equal to a second association degree threshold, regarding a content description item with the highest association degree with the new multimedia file as a belonging content description item of the new multimedia file, determining a virtual folder associated with the belonging content description item of the new multimedia file, regarding an identifier of the virtual folder associated with the belonging content description item of the new multimedia file as classification description information of the new multimedia file, to indicate the virtual file by using the classification description information and move the new multimedia file into the original storage region;
after the classification process is completed, adding classification description information to the original multimedia file associated with the virtual folder, wherein the classification description information is a folder identifier of the virtual folder to which the original multimedia file belongs. Determining the storage time of a new multimedia file stored in the file cache region based on the current time and the cache start time; and determining the time interval between the current time and the caching start time as the storage time of the new multimedia file stored in the file cache region. The first time threshold is: 5 hours, 10 hours, 20 hours, 30 hours, 50 hours, 100 hours, 300 hours, or 720 hours.
The calculating the association degree of the summary information of the new multimedia file and the plurality of subject terms of each content description item to determine the association degree of the new multimedia file and each content description item comprises the following steps: and calculating the association degree of the summary information of the new multimedia file and each subject term in the plurality of subject terms of each content description item to determine the association degree of the new multimedia file and each subject term of each content description item, determining the average association degree of the new multimedia file and all the subject terms of each content description item based on the association degree of the new multimedia file and each subject term of each content description item, and determining the average association degree of the new multimedia file and all the subject terms of each content description item as the association degree of the new multimedia file and each content description item. The second relevancy threshold is 40%, 50%, 60%, 70%, or 80%.
When the average association degree of the new multimedia file and the plurality of content description items is smaller than the association degree threshold value, moving the new multimedia file to the non-classified storage area to serve as an unclassified multimedia file and recording the classification starting time when each unclassified multimedia file is stored in the non-classified storage area, recommending at least one virtual folder for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the non-classified storage area, and using the identifier of each recommended virtual folder as the recommendation information of the unclassified multimedia file in the non-classified storage area to indicate at least one recommended virtual folder for each unclassified multimedia file and accordingly determining at least one recommended unclassified multimedia file included by the virtual folder;
recommending at least one virtual folder for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the unclassified storage area comprises: performing association degree calculation on the summary information of the unclassified multimedia file and each subject term in the plurality of subject terms of each content description item to determine the association degree of the unclassified multimedia file and each subject term of each content description item, determining the average association degree of the unclassified multimedia file and all the subject terms of each content description item based on the association degree of the unclassified multimedia file and each subject term of each content description item, and determining at least one content description item of which the average association degree with the unclassified multimedia file is greater than a third association degree threshold value as at least one recommended content description item of the unclassified multimedia file. Determining a virtual folder associated with each of the at least one recommended content description item as a recommended virtual folder of the unclassified multimedia file, thereby recommending at least one virtual folder for each unclassified multimedia file; or, at least one virtual folder is recommended for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the unclassified storage area and is replaced by: at least one virtual folder is randomly recommended for each unclassified multimedia file from among the plurality of virtual folders. The third correlation threshold is 40%, 50%, 60%, 70%, or 80%.
When the storage time of the unclassified multimedia files in the unclassified storage area reaches a second time threshold value based on the classification starting time, counting all the associated indication information associated with the unclassified multimedia files, determining the virtual folders to which the unclassified multimedia files belong according to the counting result, and using the identifiers of the belonged virtual folders as the classification description information of the unclassified multimedia files so as to indicate the virtual folders to which the unclassified multimedia files belong by using the classification description information.
Determining the storage time of the unclassified multimedia files in the unclassified storage area based on the current time and the classification starting time; and determining the time interval between the current time and the classification starting time as the storage time of the unclassified multimedia files in the unclassified storage area. The second time threshold is: 5 hours, 10 hours, 20 hours, 30 hours, 50 hours, 100 hours, 300 hours, or 720 hours.
Counting all association indication information associated with the unclassified multimedia files includes: and counting all the associated indication information associated with the unclassified multimedia files according to the folder identifiers of the virtual folders to acquire the total quantity of the associated indication information associated with the unclassified multimedia files and each virtual folder in the plurality of virtual folders and the related quantity of the associated indication information with the content of the files.
Determining the virtual folder to which the unclassified multimedia file belongs according to the statistical result comprises: and determining the virtual folder with the maximum ratio of the relevant number to the total number in the plurality of virtual folders as the virtual folder to which the unclassified multimedia file belongs.
The presentation device 206, when a target multimedia file of the multiple multimedia files in the specific virtual folder is browsed or used in the mobile terminal, performs an associated presentation on all other multimedia files except the target multimedia file of the multiple multimedia files in the specific virtual folder, and obtains associated indication information for each of at least one uncategorized recommended multimedia file included in the specific virtual folder.
All other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated way as follows: and performing preview-type associated display on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder in a preview area.
All other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated way as follows: and carrying out abbreviation type associated presentation on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder in the preview area.
All other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder are displayed in an associated way as follows: and performing small icon type associated display on all other multimedia files except the target multimedia file in the plurality of multimedia files in the specific virtual folder in the preview area. Generating, by a user of the mobile terminal, association indication information for the recommended at least one unclassified multimedia file. The format of the association indication information is < folder identifier, relevance of virtual folder >; wherein the correlation includes: file related or file unrelated.

Claims (10)

1. A method for automatically classifying multimedia files in an internet mobile terminal, the method comprising:
when an instruction for automatically classifying multimedia files in a mobile terminal in the mobile internet is received, acquiring a plurality of content description items of the multimedia files, allocating a virtual folder to each content description item, setting a folder identifier for each virtual folder, performing keyword division on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item, and determining a main subject term or a plurality of secondary subject terms in the plurality of subject terms;
creating a new memory area in a memory of the mobile terminal, the new memory area comprising: the mobile terminal comprises a file cache region, a classification identification storage region and a non-classification storage region, wherein the file cache region is used for storing new multimedia files acquired by the mobile terminal after receiving an instruction for automatically classifying the multimedia files, a corresponding storage unit is established for each virtual folder in the classification identification storage region, each storage unit is used for storing associated information associated with the belonged virtual folder, and the non-classification storage region is used for storing multimedia files which do not belong to any virtual folder;
after receiving an instruction for automatically classifying the multimedia files, the mobile terminal stores each acquired new multimedia file in a file cache region, records the cache start time of each new multimedia file stored in the file cache region, and generates summary information for each new multimedia file;
each of a plurality of multimedia files that have been stored in an original storage area in a memory of the mobile terminal before receiving an instruction to automatically classify the multimedia file is treated as an original multimedia file to be classified.
2. The method of claim 1, wherein classifying each of the plurality of multimedia files as an original multimedia file that has been stored in an original storage area in a memory of the mobile terminal prior to receiving the indication to automatically classify the multimedia file comprises:
performing association degree calculation on the summary information of the original multimedia file and a plurality of subject terms of each content description item to determine the association degree of the original multimedia file and each content description item, and determining whether the maximum association degree in the association degrees of the original multimedia file and each content description item is greater than a first association degree threshold value:
if so, taking the content description item with the maximum degree of association with the original multimedia file as the attribution content description item of the original multimedia file, determining a virtual folder associated with the attribution content description item of the original multimedia file, constructing an associated binary group by using the folder identifier of the virtual folder and the identifier of the original multimedia file, wherein the format of the associated binary group is < the identifier of the original multimedia file and the folder identifier of the virtual folder >, and storing each associated binary group in a plurality of associated binary groups into a storage unit of a corresponding virtual folder according to the folder identifier of the virtual folder so as to form associated information associated with the corresponding virtual folder by the associated binary group;
if not, the original multimedia file is moved from the original storage area to the classless storage area as an unclassified multimedia file and the classification start time at which each unclassified multimedia file is stored in the classless storage area is recorded.
3. The method according to claim 1, when the classification processing of all the original multimedia files is completed, a folder identifier of a virtual folder within an associated binary group in the association information of each storage unit of the classification identification storage area is used as the classification description information of each original multimedia file within each storage unit, so as to indicate a virtual folder to which each original multimedia file belongs using the classification description information without changing a storage location of each original multimedia file and thus determine a plurality of multimedia files each of which includes.
4. The method according to claim 1, when it is determined based on the cache start time that the storage time of the new multimedia file stored in the file cache region reaches a first time threshold, performing an association degree calculation on summary information of the new multimedia file and a plurality of subject terms of each content description item to determine an association degree of the new multimedia file with each content description item, determining an average association degree of the new multimedia file and the plurality of content description items based on the association degree of the new multimedia file and each content description item, when the average association degree of the new multimedia file and the plurality of content description items is greater than or equal to a second association degree threshold, taking a content description item with the largest association degree with the new multimedia file as a home content description item of the new multimedia file, determining a virtual folder associated with the home content description item of the new multimedia file, taking an identifier of the virtual folder associated with the home content description item of the new multimedia file as classification description information of the new multimedia file, so as to indicate the new virtual folder by using the classification description information and move the new virtual folder to the original multimedia file into the original multimedia file storage region;
when the average degree of association of the new multimedia file with the plurality of content description items is less than the degree of association threshold, moving the new multimedia file to the non-classified storage area as an unclassified multimedia file and recording the classification start time at which each unclassified multimedia file is stored in the non-classified storage area, recommending at least one virtual folder for each unclassified multimedia file according to the digest information of each unclassified multimedia file in the non-classified storage area, and using the identifier of each recommended virtual folder as the recommendation information of the unclassified multimedia file in the non-classified storage area to indicate at least one recommended virtual folder for each unclassified multimedia file and thus determine the recommended at least one unclassified multimedia file included by the virtual folder.
5. The method of claim 1, wherein when a target multimedia file of the plurality of multimedia files in the specific virtual folder is browsed or used in the mobile terminal, all other multimedia files except the target multimedia file of the plurality of multimedia files in the specific virtual folder are presented in an associated manner, and association indication information for each recommended at least one unclassified multimedia file included in the specific virtual folder is obtained;
when the storage time of the unclassified multimedia files in the unclassified storage area reaches a second time threshold value based on the classification starting time, counting all the associated indication information associated with the unclassified multimedia files, determining the virtual folders to which the unclassified multimedia files belong according to the counting result, and using the identifiers of the belonged virtual folders as the classification description information of the unclassified multimedia files so as to indicate the virtual folders to which the unclassified multimedia files belong by using the classification description information.
6. A system for automatically classifying multimedia files in an internet mobile terminal, the system comprising:
the distribution device is used for acquiring a plurality of content description items of the multimedia file when receiving an instruction for automatically classifying the multimedia file in the mobile terminal in the mobile internet, distributing a virtual folder for each content description item, setting a folder identifier for each virtual folder, performing keyword division on each content description item in the plurality of content description items to determine a plurality of subject terms related to each content description item, and determining a main subject term or a plurality of secondary subject terms in the plurality of subject terms;
creating means for creating a new storage area in a memory of the mobile terminal, the new storage area including: the mobile terminal comprises a file cache region, a classification identification storage region and a non-classification storage region, wherein the file cache region is used for storing new multimedia files acquired by the mobile terminal after receiving an instruction for automatically classifying the multimedia files, a corresponding storage unit is established for each virtual folder in the classification identification storage region, each storage unit is used for storing associated information associated with the belonged virtual folder, and the non-classification storage region is used for storing multimedia files which do not belong to any virtual folder;
the generating device is used for storing each acquired new multimedia file in the file cache region and recording the cache starting time of each new multimedia file stored in the file cache region after receiving the instruction of automatically classifying the multimedia files, and generating summary information for each new multimedia file;
and a classifying means for classifying each of the plurality of multimedia files, which have been stored in an original storage area in a memory of the mobile terminal before receiving the instruction to automatically classify the multimedia file, as an original multimedia file.
7. The method of claim 6, wherein the classifying means performs a correlation calculation between the summary information of the original multimedia file and the plurality of topic words of each content description item to determine a correlation between the original multimedia file and each content description item, and determines whether a maximum correlation between the original multimedia file and each content description item is greater than a first correlation threshold:
if so, taking the content description item with the maximum relevance degree with the original multimedia file as the attribution content description item of the original multimedia file, determining a virtual folder associated with the attribution content description item of the original multimedia file, constructing an associated binary group by using the folder identifier of the virtual folder and the identifier of the original multimedia file, wherein the format of the associated binary group is < the identifier of the original multimedia file and the folder identifier of the virtual folder >, and storing each associated binary group in a plurality of associated binary groups into a storage unit of the corresponding virtual folder according to the folder identifier of the virtual folder so as to form associated information associated with the corresponding virtual folder by the associated binary group;
if not, the original multimedia file is moved from the original storage area to the classless storage area as an unclassified multimedia file and the classification start time at which each unclassified multimedia file is stored in the classless storage area is recorded.
8. The method of claim 6, when the classification process of all the original multimedia files is completed, a folder identifier of a virtual folder within an associated binary group in the association information of each storage unit of the classification identification storage area is used as the classification description information of each original multimedia file within each storage unit, so as to indicate the virtual folder to which each original multimedia file belongs by using the classification description information without changing the storage location of each original multimedia file and thus determine the plurality of multimedia files each virtual folder includes.
9. The method according to claim 6, further comprising a processing device, when it is determined based on the cache start time that the storage time in the file cache region of the new multimedia file stored in the file cache region reaches a first time threshold, performing association calculation on the summary information of the new multimedia file and the plurality of subject terms of each content description item to determine an association degree of the new multimedia file with each content description item, determining an average association degree of the new multimedia file and the plurality of content description items based on the association degree of the new multimedia file and each content description item, when the average association degree of the new multimedia file and the plurality of content description items is greater than or equal to a second association degree threshold, determining a virtual folder associated with the home content description item of the new multimedia file, taking an identifier of the virtual folder associated with the home content description item of the new multimedia file as the classification description information of the new multimedia file to indicate the new multimedia file by using the classification description information and moving the new multimedia file into the original virtual folder;
when the average association degree of the new multimedia file and the plurality of content description items is smaller than the association degree threshold value, moving the new multimedia file to a non-classified storage area to serve as an unclassified multimedia file and recording the classification starting time of each unclassified multimedia file stored in the non-classified storage area, recommending at least one virtual folder for each unclassified multimedia file according to the summary information of each unclassified multimedia file in the non-classified storage area, and using the identifier of each recommended virtual folder as the recommendation information of the unclassified multimedia file in the non-classified storage area to indicate at least one recommended virtual folder for each unclassified multimedia file and thus determine at least one unclassified multimedia file included in the virtual folder;
when the storage time of the unclassified multimedia files in the unclassified storage area reaches a second time threshold value based on the classification starting time, counting all the associated indication information associated with the unclassified multimedia files, determining the virtual folders to which the unclassified multimedia files belong according to the counting result, and using the identifiers of the belonged virtual folders as the classification description information of the unclassified multimedia files so as to indicate the virtual folders to which the unclassified multimedia files belong by using the classification description information.
10. The method according to claim 6, further comprising a presentation device, when a target multimedia file of the plurality of multimedia files in the specific virtual folder is browsed or used in the mobile terminal, performing an associated presentation of all other multimedia files except the target multimedia file of the plurality of multimedia files in the specific virtual folder, and obtaining the association indication information for each of the recommended at least one unclassified multimedia file included in the specific virtual folder.
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