WO2016161976A1 - 选择数据内容向终端推送的方法和装置 - Google Patents
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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
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/953—Querying, e.g. by the use of web search engines
- G06F16/9535—Search customisation based on user profiles and personalisation
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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
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2228—Indexing structures
- G06F16/2246—Trees, e.g. B+trees
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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
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/955—Retrieval from the web using information identifiers, e.g. uniform resource locators [URL]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N20/00—Machine learning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N5/00—Computing arrangements using knowledge-based models
- G06N5/01—Dynamic search techniques; Heuristics; Dynamic trees; Branch-and-bound
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N5/00—Computing arrangements using knowledge-based models
- G06N5/02—Knowledge representation; Symbolic representation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N7/00—Computing arrangements based on specific mathematical models
- G06N7/01—Probabilistic graphical models, e.g. probabilistic networks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
- G06Q30/0283—Price estimation or determination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
- H04L67/306—User profiles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/535—Tracking the activity of the user
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
Definitions
- the present invention relates to the field of computer technologies, and in particular, to a method and apparatus for selecting data content to be pushed to a terminal.
- the server In applications such as Internet advertising, news consulting, and recruitment information publishing websites in the conventional technology, the server usually needs to push data content to the terminal.
- a traditional online advertising service when a user opens a web page browsing, the server pushes (delivers) an online advertisement corresponding to the user to the user's terminal, and counts the click rate of the user clicking the online advertisement (ie, after the advertisement is pushed)
- the ratio of the number of clicks to the number of pushes also known as Click-Through-Rate (CTR) or the probability of purchasing the product or service corresponding to the online advertisement.
- CTR Click-Through-Rate
- These parameters can reflect whether the advertisement content selected by the server has attracted the interest of the end user and meets the needs of the user.
- the server selects advertising content for a particular user, it also tries to select an advertisement that enables the user to click on the advertisement or purchase through the link of the advertisement.
- the recommendation is usually made according to the attribute of the user in combination with the corresponding matching model.
- commonly used matching models include: group heat model (ie, user population based on user basic attributes, such as age, gender, statistics of each group's Top click rate), logistic regression model (ie, based on user attributes, advertising basics, advertising space attributes) , as well as user, ad slot, ad cross attribute to establish a logistic regression model).
- the above matching model usually adopts a machine learning method, and needs to input the historical data of the foregoing statistics as sample data into the corresponding model at intervals, and then adjust the size of each parameter in the model through machine learning, so that the model can adapt to the comparison. New user habits.
- the server selects the data content to push to the user's terminal, the server can select the data content that best matches the user according to the updated matching model.
- the update of the matching model is to update the matching model by machine learning according to the sample data at intervals, so When the server pushes the data content according to the matching model, the matching model is not the model parameter obtained according to the latest statistical data, so that the relevance or degree of matching between the data content selected by the server and the user is low, causing the data content to be pushed. Less accurate.
- the first aspect of the embodiment of the present invention provides a method for selecting the data content to be pushed to the terminal.
- a method for selecting data content to be pushed to a terminal comprising:
- the tree node of the decision tree object includes a branch node and a leaf node
- the branch node and the user attribute type are in one-to-one correspondence
- the branch node stores the corresponding user a feature threshold of each feature interval of the attribute type
- the child nodes of the branch node are in one-to-one correspondence with the feature threshold
- the number of clicks and the number of pushes corresponding to the feature threshold corresponding to the leaf node are stored in the leaf node ;
- the second aspect of the embodiment of the present invention further provides an apparatus for selecting data content to be pushed to the terminal.
- a device for selecting data content to be pushed to a terminal comprising:
- a user identifier obtaining module configured to acquire a user identifier, and obtain a preset corresponding to the user identifier The feature value under the user attribute type;
- a decision tree obtaining module configured to acquire data content, and search a decision tree object corresponding to the data content, where the tree node of the decision tree object includes a branch node and a leaf node, and the branch node has a one-to-one correspondence with the user attribute type, and The branch node stores a feature threshold of each feature interval of the corresponding user attribute type, the child nodes of the branch node are in one-to-one correspondence with the feature threshold; and the feature threshold corresponding to the leaf node is stored in the leaf node Corresponding clicks and pushes;
- a leaf node locating module configured to locate a leaf node corresponding to the user identifier in the decision tree object according to a feature value corresponding to the user identifier and a preset user attribute type, the feature value Feature threshold matching corresponding to each tree node on the path from the root node of the decision tree object to the located leaf node;
- a data content selection module configured to acquire a click number and a push number stored in the located leaf node, generate a selection reference value according to the click number and the push number, and select the data content to be pushed and described according to the selection reference value
- the terminal corresponding to the user ID configured to acquire a click number and a push number stored in the located leaf node, generate a selection reference value according to the click number and the push number, and select the data content to be pushed and described according to the selection reference value The terminal corresponding to the user ID.
- the data content corresponding to the selected reference value is searched by matching the feature value corresponding to the user identifier with the branch node in the decision tree object corresponding to the data content, and
- the logical structure of the above decision tree object enables the decision tree object to be updated in real time by using the user's browsing record, without periodically sampling, and then the decision tree object is updated offline by machine learning according to the sampled sample, that is, It is said that when the feature values corresponding to the user identifier are matched with the branch nodes in the decision tree object corresponding to the data content, the statistical data in the decision tree object refers to the newer user browsing record, so that the matching result can be It is more in line with the operating habits or browsing habits of the running users, thus improving the accuracy of selecting data content for pushing.
- FIG. 1 is a flow chart of a method for selecting data content to be pushed to a terminal in an embodiment
- FIG. 2 is a logical relationship diagram between tree nodes in a decision tree object in an embodiment
- FIG. 3 is a logical relationship diagram between tree nodes in a decision tree object in an embodiment
- FIG. 4 is a flow chart showing a process of performing a user attribute type extension on a leaf node in a decision tree object in an embodiment
- FIG. 5 is a schematic diagram of performing user attribute type expansion on leaf nodes in a decision tree object in an embodiment
- FIG. 6 is a schematic diagram of an apparatus for selecting data content to be pushed to a terminal in an embodiment
- FIG. 7 is a schematic structural diagram of another apparatus for selecting data content to be pushed to a terminal in an embodiment.
- the method for pushing data content to a terminal may depend on a computer program, which may be an online advertisement delivery program, a news information application, a mail advertisement promotion program, a resume push program, etc., by filtering and pushing the data content.
- a computer program which may be an online advertisement delivery program, a news information application, a mail advertisement promotion program, a resume push program, etc.
- the computer program can run on a computer system of the von Neumann system.
- the computer system may be a server device running the above-mentioned online advertisement delivery program, news information application, mail advertisement promotion program, resume push program, etc. by filtering the data content and pushing it to the server program of the corresponding client program.
- a plurality of data contents are pre-stored in the server device.
- an advertisement database storing online advertisements is set, and each online advertisement is a data content, and the online advertisement service is provided.
- Merchants can increase ad data by adding records to the ad database.
- the process of selecting data content is a process of searching for a data content in a server device that best matches a certain user, or a data content that is most likely to be browsed by a user after being pushed.
- a plurality of user attribute types are pre-configured, and each attribute type is provided with a corresponding feature interval.
- the preset user attribute types may include: “gender”, “age group”, “brand”, etc., and the user attribute type “gender” may include “male” and “female”.
- the feature interval, the user attribute type “age segment” may include "post-70", “post-80”, “post-90”, "00” and other feature intervals, and the feature interval may be defined by a feature threshold, for example, "male”
- the feature interval of "female” can be defined using a Boolean variable
- the feature interval of "post 70" can be defined using the feature threshold of [70,79].
- the user attribute of the user account on the pushed terminal also has multiple feature values under the above user attribute type.
- the process of selecting the data content is to traverse the data content in the database and find the classified statistical data corresponding to each data content.
- the statistical data corresponding to the plurality of feature values of the user attribute is filtered, and the probability that the traversed data content is pushed after being predicted is estimated according to the filtered statistical data, and then the data content with a high browsing probability is selected for pushing.
- the method for selecting data content to be pushed to the terminal includes:
- Step S102 Acquire a user identifier, and obtain a feature value corresponding to the preset user attribute type corresponding to the user identifier.
- the user identifier is the identification information used to distinguish the user, and may be a user account registered by the user on the server program, or may be an email address, an IP address, a mobile phone number, and the like of the user for promotion without registration.
- the feature value corresponding to the user identifier corresponding to the user identifier in the preset user attribute type may be obtained by extracting the user data of the logged-in user account or the attribute value in the user operation record.
- the application includes two types of user accounts: a candidate user and a recruiter user.
- the candidate user can create a resume
- the created resume is a database of online resume delivery applications.
- the data content stored in the applicant is usually an individual.
- the recruiter user is the push target of the online resume, usually a business or institution.
- Online resume delivery application service The program can find the resume that best matches an enterprise in the massive resume created by the candidate user, and then push the resume to the corresponding terminal of the recruiter user (can be pushed to the online resume delivery application on the terminal)
- the client program can also be emailed to the applicant's user's mailbox).
- the staff of the enterprise needs to fill in the information of the enterprise according to the preset user attribute type.
- the preset user attribute type may include the company name, industry type, region, and company nature. If the "company name” item is filled in, the "A” and “industry type” items are filled in the “Internet”. In the “Annual Region” item, “Shenzhen” and “Enterprise Nature” are filled in, and “A”, “Internet”, “Shenzhen” and “State-owned Enterprise” are filled in the user attribute type. The characteristic value of the company name, industry type, region, and enterprise nature.
- a large amount of advertisement data (which may be a video advertisement, a picture advertisement, etc.) is stored in a database on a server.
- the online advertisement promotion program is based on a webpage search engine, and the user identifier may be an IP of the terminal.
- the address, the feature value corresponding to the user identifier under the preset user attribute type, may be extracted by searching for a search record corresponding to the IP address.
- the search record corresponding to the IP address may be searched, if the keywords in the search record include: “milk powder”, “baby car” Keywords such as “Urine is not wet”, and the feature interval under the user attribute type "Interest Product Type” includes “Infant and Child Products”, and the feature value corresponding to the user IP type under the user attribute type "Interest Product Type” is It is “infant and child product”; if the geographic location corresponding to the terminal IP is “Dongguan” and the feature interval under the user attribute type “terminal location” includes “Guangdong province”, the user attribute type corresponding to the terminal IP The characteristic value under "Terminal Location” is "Guangdongzhou”.
- Step S104 Acquire data content, and search for a decision tree object corresponding to the data content, where the tree node of the decision tree object includes a branch node and a leaf node, and the branch node has a one-to-one correspondence with the user attribute type, and the branch node stores a feature threshold of each feature interval of the corresponding user attribute type, the child nodes of the branch node are in one-to-one correspondence with the feature threshold; and the number of clicks corresponding to the feature threshold corresponding to the leaf node is stored in the leaf node And the number of pushes.
- Decision tree objects can be stored using data structures that are logically consistent with the tree structure (that is, the Tree type defined in common programming languages). Each data content corresponds to a decision tree object. For example, in an online ad delivery program, each time an online ad is created, the online ad is assigned an online The advertisement identifier Aid may store the online advertisement identifier Aid and the decision tree object corresponding to the Aid in the mapping table, where Aid is the key of the mapping table, and the decision tree object is the value of the mapping table.
- the decision tree object is logically a tree structure.
- the decision tree object includes three levels, wherein the first level tree node is a branch node and is a decision tree.
- the root node corresponds to the user attribute type “gender”, and stores a feature threshold of the feature interval “male” and the feature interval “female” under the user attribute type “gender”, and the threshold may use a boolean variable, a number or String definition.
- the tree nodes of the second level are all child nodes of the root node, and the tree node "male” which is the child node of the root node corresponds to the characteristic threshold of the feature interval "male” under the user attribute type "gender” corresponding to the root node, The tree node “female” which is a child node of the root node corresponds to the feature threshold of the feature section “female” under the user attribute type "gender” corresponding to the root node.
- the tree nodes of the third level are all child nodes of the branch node "male", and the branch node “male” corresponds to the user attribute type "education", and the feature interval "high school and below” under the user attribute type "education” is stored, and the feature A characteristic threshold for the interval “College” and the feature interval "Master and above”, which can be defined using numbers or strings.
- the leaf node “high school and below” corresponds to the feature threshold of the feature interval "high school and below” under the user attribute type "education”; the leaf node “college” is the feature interval under the user attribute type "education”
- the feature threshold corresponds to the leaf node “Master and above", which corresponds to the feature threshold of the feature interval "Master and above” under the user attribute type "Education".
- the leaf node stores the number of clicks and the number of pushes corresponding to the feature threshold corresponding to the leaf node. For example, as shown in FIG. 2, for a leaf node "college", in which a click number (click) 200 and an recommendation number (impression) 1000 are stored, that is, it is logically represented in the decision tree object with the leaf node "college”. The corresponding number of hits is 200, and the recommended number is 1000.
- Step S106 locating a leaf node corresponding to the user identifier in the decision tree object according to a feature value under a preset user attribute type corresponding to the user identifier, the feature value and the decision from the decision
- the feature threshold of the feature interval corresponding to each branch node on the path of the tree node to the located leaf node matches.
- the process of locating in the decision tree object according to the feature value corresponding to the user identifier is determined
- the branch node of the policy tree compares whether the feature threshold of the feature interval matches the feature value, and then moves to the child node of the branch node to recursively perform the above operation.
- Step S108 Acquire a click number and a push number stored in the located leaf node, generate a selection reference value according to the click number and the push number, and select the data content according to the selection reference value to be pushed to the user identifier. terminal.
- the content in the “gender” column is “male”
- the content in the “education” column is “college”, in the “marital status” column.
- the content filled in is “divorced”
- the content filled in the “age” column is “32”
- the user identifier of the user is “male” under the preset user attribute type “gender” (in other embodiments)
- the feature under the user attribute type "education” The value is “College”
- the feature value under the user attribute type "marital status” is "divorce”
- the feature value under the user attribute type "age segment” is "32".
- the feature threshold of the stored feature interval is the user attribute type.
- the child node of the node, that is, the branch node "male” makes further judgment.
- the user attribute type corresponding to the branch node "male” is "education", and the characteristic threshold of the stored feature interval is the feature threshold "high school and below” under the user attribute type "education", the feature threshold "college” and the feature threshold” Master degree and above”. Therefore, among the feature values corresponding to the user identifier, the feature value "college” can be matched with the feature threshold "college” stored in the branch node "male", and the child node of the branch node "male” can be obtained, that is, the leaf node "college” Make further judgments.
- the leaf node "college” is a leaf node
- the number of clicks 200 and the number of pushes stored in the leaf node can be obtained, that is, in the historical statistics, the data content corresponding to the decision tree object is simultaneously
- the historical click rate statistics of the user group can be used as the selection reference value of the data content relative to the user identifier.
- the data content in the database may be traversed, a selection reference value of each data content relative to the user identifier is generated, and then the data content with the largest selection reference value or the data content greater than the preset threshold is searched and pushed. Identify the corresponding terminal for the user. In other embodiments, it may also be pushed to the terminal corresponding to the user identifier by using an email or a social network platform.
- the search method is the feature value and data content corresponding to the user identifier.
- the feature thresholds corresponding to the respective branch nodes of the decision tree object are matched, and the number of clicks and the number of pushes stored in the matched leaf nodes are found, thereby finding the selection reference value corresponding to the user identifier.
- the decision tree object corresponding to the data content constructed in this way can also be updated in real time according to the browsing record returned by the user operation, and the number of clicks and the recommended number corresponding to the browsing record returned by the user are added to the corresponding leaf node of the decision tree object. In real time, the real-time update of the decision tree object is completed.
- the process of updating the decision tree object may be specifically as follows:
- Receiving a browsing record uploaded by the terminal acquiring a user identifier corresponding to the terminal, and data content corresponding to the browsing record;
- the leaf node increases the number of clicks and the number of pushes stored in the located leaf node according to the browsing record.
- the above-mentioned dating website will send the data content (for example, the data of the more suitable user) with the largest reference value to the user whose registration information is "male”, “college”, “divorced”, or "32". If the user clicks on the data content to browse, the returned browsing record is the number of clicks 1 and the number of pushes is 1.
- the server After receiving the browsing record, the server finds that the feature value of the user corresponding to the browsing record is “male”, “junior”, “divorced”, and “32 years old”, and the same positioning method can be used to locate the browsing. Record the leaf node "College” in the decision tree object of the corresponding data content, and then increase the number of clicks stored in the leaf node "College” to 201, and the number of pushes to 1001. Similarly, if the user does not click on the data content, the number of pushes stored in the leaf node "College” is increased to 1001, and the number of clicks does not change.
- the decision tree object may be extended according to historical statistical data in real time, and the tree node of the decision tree object is added, that is, the user attribute type corresponding to the branch node in the decision tree object is added, and then the data content is pushed when the data content is selected. It can be selected according to the updated decision tree object, thereby further improving the accuracy of the pushed data content, making it more closely match the user's operating system or user attributes, and more likely to cause user interest.
- the step of increasing the number of clicks and the number of pushes stored in the located leaf node according to the browsing record further includes:
- Obtaining a branch node on the path of the root node to the located leaf node in the decision tree object, and acquiring a candidate user attribute other than a user attribute type corresponding to the branch node on the path The type, the number of clicks and the number of pushes corresponding to the data content acquired by the browsing record are added according to each feature interval under each candidate user attribute type.
- the leaf node "college” not only stores the total number of hits that meet the gender "male”, academic “college", 200, the total number of recommendations is 1000, but also includes the classification of the user attribute type "marital status”.
- the number of clicks in the three preset feature intervals wherein the number of hits corresponding to the feature interval "unmarried” is 120, the number of pushes is 400; the number of hits corresponding to the feature interval "divorced” is 20, and the number of pushes is 400; the number of hits corresponding to the feature interval "widowed” is 60 (the sum of the three may not be equal to the total number of hits 200, and the number of pushes is 200.
- the user ID does not correspond to any feature under a certain user attribute type.
- the interval includes; the number of clicks in the three preset feature intervals under the user attribute type "age segment" stored in the category, wherein the number of hits corresponding to the feature interval "below 30" is 130, and the number of pushes is 500.
- the number of clicks corresponding to the feature section "30-40" is 30, the number of pushes is 400, the number of hits corresponding to the feature section "40 or more" is 40, and the number of pushes is 100.
- the candidate user attribute type is the user attribute type that the branch node of the decision tree object does not correspond to.
- the branch node on the path from the root node to the leaf node “college” in the decision tree object is only related to “gender”.
- the "educational” has a corresponding relationship, but the remaining "marital status” and "age”
- "marital status” and "age segment” are the corresponding candidate user attribute types.
- the candidate user can be selected according to the correlation between the number of clicks corresponding to each feature value stored in the leaf node.
- the attribute type extends the decision tree object.
- the method further includes:
- Step S202 Generate an information gain corresponding to the candidate user attribute type according to the number of clicks and the number of pushes corresponding to each feature interval in the candidate user attribute type stored in the located leaf nodes.
- the value of p 1 is the ratio of the total number of clicks 200 stored in the leaf node "college" to the total number of pushes 1000, thus:
- the feature threshold v of each feature interval under the user attribute type "age segment" is traversed to: “30 or less”, “30-40”, and "40 or more", wherein:
- Entropy(S A ) can be calculated to obtain the information gain of the user attribute type "age segment".
- Step S204 Find the candidate user attribute type whose difference between the information gain and the information gain of the other found user attribute types is greater than or equal to the information gain threshold.
- Step S206 When the search is found, the located leaf node is set as a branch node, and the leaf node of the branch node is generated according to the feature threshold of the feature interval under the searched candidate user attribute type.
- candidate user attribute types there are many candidate user attribute types. For example, if L has A, B, C, and D candidate user attributes under a leaf node, G(A), G(B), and G are calculated first. C), G(D), and then find two candidate user attributes with a larger G. For example, if G(A)>G(B)>G(C)>G(D), G(A)-G(B) is calculated, and if G(A)-G(B) is greater than the information gain threshold, Then, the candidate user attribute type A is selected to correspond to the tree node.
- G(A)-G(B) is smaller than the information gain threshold, the decision tree object can be kept unchanged, and the leaf nodes of the decision tree object are not split.
- the leaf node generated after the split as shown in FIG. 5, the total number of clicks and the total recommended number corresponding to the leaf node re-stated according to the browsing record, and the candidate user attribute type are stored therein (as shown in FIG. 5).
- the number of clicks and the number of pushes corresponding to each feature interval of the user attribute type "age group".
- Extending the decision tree can further improve the accuracy of the push. It can be seen from the above formula that if the number of clicks and the number of pushes corresponding to the feature interval in a candidate user attribute type are relatively uniform, the information gain is large, that is, when the decision tree object is expanded, The number of clicks corresponding to the feature interval and the candidate user attribute type with a uniform distribution of the push number are selected, so that when the positioning is performed according to the feature value corresponding to the user identifier, the probability of entering each leaf node under the branch node is similar.
- the probability of reaching each leaf node in the decision tree object can be balanced, thereby avoiding that a certain leaf node is only too harsh due to too strict matching conditions.
- the probability is used to match the feature values of the user identification, thereby increasing the space utilization of the storage decision tree object.
- the decision tree object may be created for the data content in the real-time running process.
- the step of searching for the decision tree object corresponding to the data content further includes: if the data content corresponding to the data content is not found, The decision tree object creates a decision tree object corresponding to the data content, and the root node of the created decision tree object is a leaf node; a default selection reference value is assigned to the data content.
- the decision tree object can be extended in real time according to the browsing records returned by the subsequent terminal.
- the decision tree object may initially have only a single node of the root node (because it has no children, so it must also be a leaf node), and with the received
- the candidate user attribute types can be selected step by step to create branch nodes, thereby making the decision tree object perfect.
- the branch node corresponding to the user attribute type may be added to the decision tree object according to the statistics of the browsing record of the added user attribute type, thereby
- the decision tree object can be used to increase the reference to the user attribute type in real time as the user attribute type is expanded, thereby improving the scalability of the system that can be used for data content push.
- the step of generating a selection reference value according to the number of clicks and the number of pushes further includes:
- the billing value after each type of advertisement is not the same, and when the selection reference value is generated, the pricing weight coefficient is introduced, so that the selection reference value can refer not only to the historically clicked rate, but also Refer to the click revenue of an ad to maximize the benefits of online advertising.
- the step of acquiring the data content further includes: pre-screening the data content by keyword matching according to the feature value corresponding to the preset user attribute type corresponding to the user identifier.
- the data content stored in the database is usually huge. Therefore, the data content in the database may be performed in advance according to the feature value corresponding to the user identifier corresponding to the preset user attribute type. Pre-screening, if the data content does not contain keywords corresponding to the feature values, it is filtered out.
- the female user data may be pre-screened, and then the selection reference value is found in the female user data according to the process of step S104 to step S108.
- the female user profile is pushed to the male user.
- Pre-screening the data content can greatly reduce the number of matching of decision tree objects, thereby reducing the amount of calculation and improving the execution efficiency of the computer.
- the device for pushing the data content to the terminal includes: a user identifier obtaining module 102, a decision tree obtaining module 104, a leaf node positioning module 106, and a data content selecting module 108, wherein:
- the user identifier obtaining module 102 is configured to obtain a user identifier, and obtain a feature value corresponding to the preset user attribute type corresponding to the user identifier;
- the decision tree obtaining module 104 is configured to obtain data content, and search a decision tree object corresponding to the data content, where the tree node of the decision tree object includes a branch node and a leaf node, and the branch node has a one-to-one correspondence with the user attribute type. And the branch node stores a feature threshold of each feature interval of the corresponding user attribute type, the child nodes of the branch node are in one-to-one correspondence with the feature threshold; and the leaf node stores a feature corresponding to the leaf node The number of clicks and pushes corresponding to the threshold;
- the leaf node locating module 106 is configured to locate a leaf node corresponding to the user identifier in the decision tree object according to a feature value under a preset user attribute type corresponding to the user identifier, the feature a value matching a feature threshold corresponding to each tree node on a path from the root node of the decision tree object to the located leaf node;
- the data content selection module 108 is configured to obtain the number of clicks and the number of pushes stored in the located leaf node, generate a selection reference value according to the number of clicks and the number of pushes, and select the data content to be pushed to and according to the selected reference value.
- the apparatus for selecting the data content to be pushed to the terminal further includes a decision tree update module 110, configured to receive the uploaded browsing record, obtain the user identifier corresponding to the browsing record, and the browsing record. Corresponding data content; acquiring a decision tree object corresponding to the data content, acquiring a feature value corresponding to the preset user attribute type corresponding to the user identifier, and positioning the location in the decision tree object according to the acquired feature value
- the leaf node corresponding to the user identifier is configured to increase the number of clicks and the number of pushes stored in the located leaf node according to the browsing record.
- the decision tree update module 110 is further configured to acquire the number of clicks and the number of pushes corresponding to the data content in the browsing record, and obtain the root node in the decision tree object to the located A branch node on the path of the leaf node obtains a candidate user attribute type other than the user attribute type corresponding to the branch node on the path, and is added according to each feature interval under each candidate user attribute type.
- the browsing record acquires the number of clicks and the number of pushes corresponding to the data content.
- the decision tree update module 110 is further configured to generate the candidate user according to the number of clicks and the number of pushes corresponding to each feature interval under the candidate user attribute type stored in the located leaf nodes.
- Information gain corresponding to the attribute type; find information gain and other found user genus The difference of the information type of the sexual type is greater than or equal to the candidate user attribute type of the information gain threshold; when found, the positioned leaf node is set as a branch node, according to the searched candidate user attribute type
- the feature threshold of the lower feature interval generates a leaf node of the branch node.
- the decision tree update module 110 is further configured to use a formula:
- the apparatus for selecting the data content to be pushed to the terminal further includes a decision tree creation module 112, configured to create and the data when the decision tree object corresponding to the data content is not found.
- a decision tree object corresponding to the content, and the root node of the created decision tree object is a leaf node;
- the decision tree obtaining module is further configured to allocate a default selection reference value to the data content when the decision tree object corresponding to the data content is not found.
- the data content selection module 108 is further configured to obtain a valuation weight coefficient corresponding to the data content, and multiply the ratio of the click number and the push number by the pricing weight coefficient to obtain the data content. Select a reference value.
- the apparatus for selecting the data content to be pushed to the terminal further includes a data content screening module 114, and is further configured to pass the feature value corresponding to the preset user attribute type corresponding to the user identifier. Keyword matching pre-screens data content.
- the method of pushing the terminal according to the selection data contents shown in FIGS. 1 to 5 may be performed by each unit in the apparatus that pushes the selected data content to the terminal shown in FIG. 6.
- steps S102, S104, S106, and S108 shown in FIG. 1 may be performed by the user identifier acquisition module 102, the decision tree acquisition module 104, the leaf node location module 106, and the data content selection module 108 shown in FIG. 6, respectively;
- Steps S202, S204, and S106 shown in FIG. 4 can be as shown in FIG. 6.
- the decision tree update module 110 is shown executing.
- each unit in the apparatus for selecting the data content to be pushed to the terminal shown in FIG. 6 may be separately or entirely combined into one or several other units, or some of the units(s)
- the unit can also be further divided into a plurality of functionally smaller units, which can achieve the same operation without affecting the implementation of the technical effects of the embodiments of the present invention.
- the above units are divided based on logical functions. In practical applications, the functions of one unit may also be implemented by multiple units, or the functions of multiple units may be implemented by one unit. In other embodiments of the invention, the terminal device may also include other modules. However, in practical applications, these functions can also be implemented by other units, and can be implemented by multiple units.
- a general-purpose computing device such as a computer including a processing unit and a storage element including a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and the like.
- a computer program (including program code) for performing a method of selecting data content to be pushed to a terminal as shown in FIGS. 1 to 5 to construct a device for selecting a data content to be pushed to a terminal as shown in FIG. 6, and implementing the present invention The method of selecting the data content to push to the terminal in the embodiment.
- the computer program can be recorded, for example, on a computer readable recording medium, and loaded in and run in the above-described computing device by a computer readable recording medium.
- the data content corresponding to the selected reference value is searched by matching the feature value corresponding to the user identifier with the branch node in the decision tree object corresponding to the data content, and
- the logical structure of the above decision tree object enables the decision tree object to be updated in real time by using the user's browsing record, without periodically sampling, and then the decision tree object is updated offline by machine learning according to the sampled sample, that is, It is said that when the feature values corresponding to the user identifier are matched with the branch nodes in the decision tree object corresponding to the data content, the statistical data in the decision tree object refers to the newer user browsing record, so that the matching result can be It is more in line with the operating habits or browsing habits of the running users, thus improving the accuracy of selecting data content for pushing.
- FIG. 7 is a schematic structural diagram of another apparatus for selecting data content to be pushed to a terminal according to an embodiment of the present invention.
- the apparatus for selecting data content to be pushed to the terminal may include at least one processor 701, such as a CPU, at least one communication bus 802, and a user interface 703. And a memory 704.
- the communication bus 702 is used to implement connection communication between these components.
- the user interface 703 can include a display, and the optional user interface 703 can also include a standard wired interface and a wireless interface.
- the memory 704 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
- the memory 704 can also optionally be at least one storage device located away from the processor 701.
- the memory 704 stores a set of program codes, and the processor 701 calls the program code stored in the memory 704 to perform the following operations:
- the tree node of the decision tree object includes a branch node and a leaf node
- the branch node and the user attribute type are in one-to-one correspondence
- the branch node stores the corresponding user a feature threshold of each feature interval of the attribute type
- the child nodes of the branch node are in one-to-one correspondence with the feature threshold
- the leaf node stores a click number corresponding to a feature threshold corresponding to the leaf node Push number
- processor 701 invokes program code stored in memory 704 for performing the following operations:
- the leaf node increases the number of clicks and the number of pushes stored in the located leaf node according to the browsing record.
- the processor 701 calls the program code stored in the memory 704 to increase the number of clicks and the number of pushes stored in the located leaf node according to the browsing record, and may further include:
- Obtaining a branch node on the path of the root node to the located leaf node in the decision tree object, and acquiring a candidate user attribute other than a user attribute type corresponding to the branch node on the path The type, the number of clicks and the number of pushes corresponding to the data content acquired by the browsing record are added according to each feature interval under each candidate user attribute type.
- the processor 701 calls the program code stored in the memory 704 to add the number of clicks corresponding to the data content acquired by the browsing record according to each feature interval under each candidate user attribute type. After pushing the number, the processor 701 calls the program code stored in the memory 704, and is also used to perform the following operations:
- the located leaf node is set as a branch node, and the leaf node of the branch node is generated according to the feature threshold of the feature interval under the found candidate user attribute type.
- the processor 701 calls the program code stored in the memory 704 to search for a decision tree object corresponding to the data content, and may further include:
- the processor 701 by using the program code stored in the memory 704, to generate a selection reference value according to the number of clicks and the number of pushes, may further include:
- the processor 701 calls the program code stored in the memory 704 to obtain the data content, and may further include:
- the data content is pre-screened by keyword matching according to the feature value corresponding to the preset user attribute type corresponding to the user identifier.
- a "computer readable medium” can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with such an instruction execution system, apparatus, or device.
- computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM).
- the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.
- portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
- multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
- a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.
- the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
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Abstract
Description
Claims (20)
- 一种选择数据内容向终端推送的方法,其特征在于,包括:获取用户标识,获取所述用户标识对应的在预设的用户属性类型下的特征值;获取数据内容,查找与所述数据内容对应的决策树对象,所述决策树对象的树节点包括分支节点和叶结点,分支节点与用户属性类型一一对应,且分支节点存储有相应的用户属性类型的各个特征区间的特征阈值,所述分支节点的子节点与所述特征阈值一一对应;所述叶结点中存储与所述叶结点对应的特征阈值对应的点击数和推送数;根据与所述用户标识对应的在预设的用户属性类型下的特征值在所述决策树对象中定位与所述用户标识对应的叶结点,所述特征值与从所述决策树对象的根节点到所述定位到的叶结点的路径上的各个树节点对应的特征阈值匹配;获取定位到的叶结点中存储的点击数和推送数,根据所述点击数和推送数生成选择参考值,根据所述选择参考值选择数据内容推送到与所述用户标识对应的终端。
- 根据权利要求1所述的选择数据内容向终端推送的方法,其特征在于,所述方法还包括:接收上传的浏览记录,获取所述浏览记录对应的用户标识以及所述浏览记录对应的数据内容;获取所述数据内容对应的决策树对象,获取所述用户标识对应的在预设的用户属性类型下的特征值,根据获取到的特征值在所述决策树对象中定位所述与用户标识对应的叶结点,根据所述浏览记录增加所述定位到的叶结点中存储的点击数和推送数。
- 根据权利要求2所述的选择数据内容向终端推送的方法,其特征在于,所述根据所述浏览记录增加所述定位到的叶结点中存储的点击数和推送数的 步骤还包括:获取所述浏览记录中与所述数据内容对应的点击数和推送数;获取所述决策树对象中所述根节点到所述定位到的叶结点的路径上的分支节点,获取预设的除所述路径上的分支节点对应的用户属性类型之外的候选用户属性类型,按照各个候选用户属性类型下的各个特征区间归类添加由所述浏览记录获取到的与所述数据内容对应的点击数和推送数。
- 根据权利要求3所述的选择数据内容向终端推送的方法,其特征在于,所述按照各个候选用户属性类型下的各个特征区间归类添加由所述浏览记录获取到的与所述数据内容对应的点击数和推送数的步骤之后还包括:根据所述定位到的叶结点中归类存储的与候选用户属性类型下的各个特征区间对应的点击数和推送数生成所述候选用户属性类型对应的信息增益;查找信息增益与其他查找到的用户属性类型的信息增益的差值大于或等于信息增益阈值的候选用户属性类型;在查找到时,则将所述定位到的叶结点设置为分支节点,根据所述查找到的候选用户属性类型下的特征区间的特征阈值生成该分支节点的叶结点。
- 根据权利要求1至5任一项所述的选择数据内容向终端推送的方法,其特征在于,所述查找与所述数据内容对应的决策树对象的步骤还包括:若未查找到与所述数据内容对应的决策树对象,则创建与所述数据内容对应的决策树对象,该创建的决策树对象的根节点为叶节点;为所述数据内容分配默认的选择参考值。
- 根据权利要求1至5任一项所述的选择数据内容向终端推送的方法,其特征在于,所述根据所述点击数和推送数生成选择参考值的步骤还包括:获取所述数据内容对应的计价权重系数,将所述点击数和推送数的比值与所述计价权重系数相乘后得到所述数据内容的选择参考值。
- 根据权利要求1至5任一项所述的选择数据内容向终端推送的方法,其特征在于,所述获取数据内容的步骤还包括:根据所述用户标识对应的在预设的用户属性类型下的特征值通过关键字匹配对数据内容进行预筛选。
- 一种选择数据内容向终端推送的装置,其特征在于,包括:用户标识获取模块,用于获取用户标识,获取所述用户标识对应的在预设的用户属性类型下的特征值;决策树获取模块,用于获取数据内容,查找与所述数据内容对应的决策树对象,所述决策树对象的树节点包括分支节点和叶结点,分支节点与用户属性类型一一对应,且分支节点存储有相应的用户属性类型的各个特征区间的特征阈值,所述分支节点的子节点与所述特征阈值一一对应;所述叶结点中存储与所述叶结点对应的特征阈值对应的点击数和推送数;叶结点定位模块,用于根据与所述用户标识对应的在预设的用户属性类型下的特征值在所述决策树对象中定位与所述用户标识对应的叶结点,所述特征值与从所述决策树对象的根节点到所述定位到的叶结点的路径上的各个树节点对应的特征阈值匹配;数据内容选择模块,用于获取定位到的叶结点中存储的点击数和推送数,根据所述点击数和推送数生成选择参考值,根据所述选择参考值选择数据内容推送到与所述用户标识对应的终端。
- 根据权利要求9所述的选择数据内容向终端推送的装置,其特征在于,所述装置还包括决策树更新模块,用于接收上传的浏览记录,获取所述浏览记录对应的用户标识以及所述浏览记录对应的数据内容;获取所述数据内容对应的决策树对象,获取所述用户标识对应的在预设的用户属性类型下的特征值,根据获取到的特征值在所述决策树对象中定位所述与用户标识对应的叶结点,根据所述浏览记录增加所述定位到的叶结点中存储的点击数和推送数。
- 根据权利要求10所述的选择数据内容向终端推送的装置,其特征在于,所述决策树更新模块还用于获取所述浏览记录中与所述数据内容对应的点击数和推送数;获取所述决策树对象中所述根节点到所述定位到的叶结点的路径上的分支节点,获取预设的除所述路径上的分支节点对应的用户属性类型之外的候选用户属性类型,按照各个候选用户属性类型下的各个特征区间归类添加由所述浏览记录获取到的与所述数据内容对应的点击数和推送数。
- 根据权利要求11所述的选择数据内容向终端推送的装置,其特征在于,所述决策树更新模块还用于根据所述定位到的叶结点中归类存储的与候选用户属性类型下的各个特征区间对应的点击数和推送数生成所述候选用户属性类型对应的信息增益;查找信息增益与其他查找到的用户属性类型的信息增益的差值大于或等于信息增益阈值的候选用户属性类型;在查找到时,则将所述定位到的叶结点设置为分支节点,根据所述查找到的候选用户属性类型下的特征区间的特征阈值生成该分支节点的叶结点。
- 根据权利要求9至13任一项所述的选择数据内容向终端推送的装置,其特征在于,所述装置还包括决策树创建模块,用于在未查找与所述数据内容对应的决策树对象时,创建与所述数据内容对应的决策树对象,该创建的决策树对象的根节点为叶节点;所述决策树获取模块还用于在在未查找与所述数据内容对应的决策树对象时,为所述数据内容分配默认的选择参考值。
- 根据权利要求9至13任一项所述的选择数据内容向终端推送的方法,其特征在于,所述数据内容选择模块还用于获取所述数据内容对应的计价权重系数,将所述点击数和推送数的比值与所述计价权重系数相乘后得到所述数据内容的选择参考值。
- 根据权利要求9至13任一项所述的选择数据内容向终端推送的装置,其特征在于,所述装置还包括数据内容筛选模块,还用于根据所述用户标识对应的在预设的用户属性类型下的特征值通过关键字匹配对数据内容进行预筛 选。
- 一种选择数据内容向终端推送的装置,其特征在于,包括:至少一个处理器及连接于所述至少一个处理器的存储器,所述处理器调用所述存储器中存储的程序代码用于执行以下操作的指令:获取用户标识,获取所述用户标识对应的在预设的用户属性类型下的特征值;获取数据内容,查找与所述数据内容对应的决策树对象,所述决策树对象的树节点包括分支节点和叶结点,分支节点与用户属性类型一一对应,且分支节点存储有相应的用户属性类型的各个特征区间的特征阈值,所述分支节点的子节点与所述特征阈值一一对应;所述叶结点中存储与所述叶结点对应的特征阈值对应的点击数和推送数;根据与所述用户标识对应的在预设的用户属性类型下的特征值在所述决策树对象中定位与所述用户标识对应的叶结点,所述特征值与从所述决策树对象的根节点到所述定位到的叶结点的路径上的各个树节点对应的特征阈值匹配;获取定位到的叶结点中存储的点击数和推送数,根据所述点击数和推送数生成选择参考值,根据所述选择参考值选择数据内容推送到与所述用户标识对应的终端。
- 根据权利要求17所述的选择数据内容向终端推送的装置,其特征在于,所述处理器调用所述存储器中存储的程序代码用于执行以下操作的指令:接收上传的浏览记录,获取所述浏览记录对应的用户标识以及所述浏览记录对应的数据内容;获取所述数据内容对应的决策树对象,获取所述用户标识对应的在预设的用户属性类型下的特征值,根据获取到的特征值在所述决策树对象中定位所述与用户标识对应的叶结点,根据所述浏览记录增加所述定位到的叶结点中存储的点击数和推送数。
- 根据权利要求18所述的选择数据内容向终端推送的装置,其特征在 于,执行所述根据所述浏览记录增加所述定位到的叶结点中存储的点击数和推送数的指令,包括:获取所述浏览记录中与所述数据内容对应的点击数和推送数;获取所述决策树对象中所述根节点到所述定位到的叶结点的路径上的分支节点,获取预设的除所述路径上的分支节点对应的用户属性类型之外的候选用户属性类型,按照各个候选用户属性类型下的各个特征区间归类添加由所述浏览记录获取到的与所述数据内容对应的点击数和推送数。
- 根据权利要求19所述的选择数据内容向终端推送的装置,其特征在于,执行所述按照各个候选用户属性类型下的各个特征区间归类添加由所述浏览记录获取到的与所述数据内容对应的点击数和推送数的指令之后,所述处理器调用所述存储器中存储的程序代码还用于执行以下操作的指令:根据所述定位到的叶结点中归类存储的与候选用户属性类型下的各个特征区间对应的点击数和推送数生成所述候选用户属性类型对应的信息增益;查找信息增益与其他查找到的用户属性类型的信息增益的差值大于或等于信息增益阈值的候选用户属性类型;在查找到时,则将所述定位到的叶结点设置为分支节点,根据所述查找到的候选用户属性类型下的特征区间的特征阈值生成该分支节点的叶结点。
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