JP3851712B2 - Document management system and computer-readable recording medium storing a program for causing a computer to function as the system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a document management system capable of automatically presenting a sentence corresponding to a related description of a document affected by the changed document when the changed document is stored, and a computer functioning as the system. The present invention relates to a computer-readable recording medium on which the program is recorded.
[0002]
[Prior art]
With the development of computers, documents that have been recorded and stored on paper as a medium are generally handled as digitized information, and a large amount of digitized documents will be accumulated in the database. ing.
[0003]
By the way, as a large amount of electronic documents are accumulated, a search technique that can easily find a desired document from a large amount of documents becomes important. In particular, today, when everyone works using a computer, it is possible to construct a search system that allows a beginner of a computer to easily search for a desired document without using a special technique. It becomes an important point.
[0004]
In addition, when such a large amount of digitized documents are regarded as information assets and information resources, it is important how effectively and efficiently these pieces of information can be managed.
[0005]
[Problems to be solved by the invention]
By the way, according to the conventional technology, when an arbitrary document is changed from among a large amount of digitized documents, a part corresponding to a related description of a document affected by the changed document is displayed. No system has been provided that searches for sentences and automatically presents them.
[0006]
The present invention has been made in view of the above, and when storing a changed document, by automatically presenting a sentence corresponding to a related description of a document affected by the changed document, The purpose is to improve user workability and convenience.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a document management system of the present invention includes a document creation unit that creates and changes a document, and a document storage unit that saves a document created or changed by the document creation unit. In this case, when storing the changed document in the document storage unit, a document difference extraction unit that extracts a difference between the changed document and a document before the change, and a difference extracted by the document difference extraction unit is used as a search condition. A search means for searching for a document having a related description from documents stored in the document storage means, and a sentence corresponding to the related description of the document searched by the search means is affected by the changed document. And an affected part presenting means for presenting as an affected part.
[0008]
The document management system of the present invention, in the above document management system, said search means performs the search using the vector space method, the document difference extraction means, the pre-change and vector representations of the documents the change by comparing the vector representation of the document, and extracts the difference between the noun phrase and newly added noun phrases that were deleted.
[0009]
The document management system of the present invention, in the above document management system, further, when saving documents the change in the document storage means, the document difference extraction means, via the search means and the impact portion presenting means A designation means for designating whether or not to present the affected part is provided.
[0010]
In the document management system of the present invention , in the above document management system, when the designating unit designates that the affected part is to be presented, the search unit is searched from the document stored in the document storage unit. It is possible to specify a search target document or a search range as a search target.
[0011]
Furthermore, a computer-readable recording medium of the present invention records a program for causing a computer to function as any one of the document management systems described above .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a document management system of the present invention and a computer-readable recording medium that records a program for causing a computer to function as the system will be described in detail with reference to the accompanying drawings.
[0013]
FIG. 1 is a system configuration diagram of a document management system according to the present embodiment. In FIG. 1, reference numeral 100 denotes a CPU, 101 denotes a ROM, 102 denotes a RAM, 103 denotes document management software 104 for document management, document creation software 105 for creating a document, and document creation software 105. Alternatively, a hard disk device (corresponding to the document storage means of claim 1) is stored, 106 is an input device such as a keyboard or mouse, 107 is a display such as a CRT, and 108 is connected to each of the above components. Each bus is shown. In the present embodiment, the storage destination of the stored document is the hard disk device 103, but is not limited to this.
[0014]
FIG. 2 is a schematic block diagram showing processing of the document management software 104. The document management software 104 manages documents using a search function based on a vector space method. (1) A stored document 211 stored in the hard disk device 103 in order to use a search function based on a vector space method. And (2) a document for extracting a difference between the changed document 206 and the saved document 211 before the change when the changed document 206 changed by the document creation software 105 is saved in the hard disk device 103. A difference extraction process; and (3) a search process for searching the saved document 211 having a related description from the saved documents 211 saved in the hard disk device 103, using the difference extracted in the document difference extraction process as a search condition 212; (4) Changed sentence in which the sentence corresponding to the related description of the saved document 211 searched in the search process is changed. The impact portion presenting process of presenting as affecting part affected by 206 and performs.
[0015]
(1) Processing for registering a document in a transposed file In the document management software 104, processing for registering a document in the transposed file 203 is performed by the natural language processing module 200 and the database build component 205. Note that the transposed file 203 is generated in the hard disk device 103.
[0016]
Specifically, the natural language processing module 200 inputs a stored document 211 stored in the hard disk device 103, and for the input stored document 211, a dictionary 201 that stores document format recognition processing, part of speech information, and the like. Analysis processing such as morphological analysis, syntax analysis, and noun phrase extraction is performed using the grammar dictionary 202 for analyzing the dependency of each word. Based on the result of the analysis processing, the saved document 211 is divided into sub-document units composed of a plurality of sentences, noun phrases are extracted from the sub-documents, and a document set 204 including a noun phrase list for each sub-document is generated. .
[0017]
For each noun phrase in the document set 204 input from the natural language processing module 200, the database build component 205 obtains statistical information such as the appearance frequency in the sub-document, the distribution in the entire document DB 101, and the obtained noun phrase. Each sub-document is converted into a vector representation using statistical information for each. Based on the vector representation for each sub-document, a vector representation of the saved document 211 is generated and registered in the transposed file 203.
[0018]
(2) Document difference extraction processing When the document management software 104 saves the changed document 206 changed by the document creation software 105 to the hard disk device 103, a document for extracting the difference between the changed document 206 and the saved document 211 before the change. The difference extraction processing is performed using the natural language processing module 200, the query build component 207, and the search engine 209 (these correspond to the document difference extraction means of claim 1).
[0019]
Specifically, the natural language processing module 200 receives the changed document 206 changed by the document creation software 105, performs the above-described analysis processing, and generates a document set 204.
[0020]
The query build component 207, for each noun phrase constituting the document set 204 input from the natural language processing module 200, the appearance frequency in the changed document 206 (document set 204), the distribution in the entire transposed file 203, etc. Statistical information is obtained, and a query document 208 is generated by converting the changed document 206 into a vector expression using the obtained statistical information.
[0021]
A search engine 209 (for example, CLARITECH's CLARIT, etc.) inputs the query document 208 generated by the query build component 207 and transposes the vector representation of the saved document 211 before the change corresponding to the changed document 206 into a transposed file. Input from 203. Then, the query document 208 (the vector expression of the changed document 206) and the vector expression of the saved document 211 are compared, and the changed document including the noun phrase deleted and the newly added noun phrase in the changed document. And the difference between the documents before the change .
[0022]
(3) Retrieval processing Further, the document management software 104 retrieves the stored document 211 having the related description from the stored documents 211 stored in the hard disk device 103 using the difference extracted by the difference extraction processing as the search condition 212. The processing is performed using the natural language processing module 200, the query build component 207, and the search engine 209 (these correspond to the search means of claim 1).
[0023]
Specifically, the natural language processing module 200 inputs a deleted noun phrase extracted as a difference from the search engine 209 and a newly added noun phrase as the search condition 212, and a document set including these noun phrases 204 is generated.
[0024]
The query build component 207 generates a query document 208 (vector expression of the search condition 212) obtained by converting the document set 204 input from the natural language processing module 200 into a vector expression as described above.
[0025]
The search engine 209 inputs the query document 208 generated by the query build component 207, and compares the vector expression of each saved document 211 in the transposed file 203 with the query document 208 (vector expression of the search condition 212). Then, the saved document 211 having a description related to the difference obtained from the changed document 206 and the corresponding saved document 211 in the document difference extraction process is searched.
[0026]
(4) Affected part presentation processing Further, in the document management software, an affected part presentation that presents a sentence corresponding to the related description of the saved document 211 searched by the search process as an affected part affected by the changed changed document 206. The processing is performed by using an affected part presentation module 210 (corresponding to the affected part presenting means of claim 1).
[0027]
Specifically, the affected part presentation module 210 inputs a search result of the saved document 211 having a description related to the difference obtained by the document difference extraction process from the search engine 209, and applies the sentence of the part corresponding to the related description. Is extracted from the stored document 211 to be displayed and displayed on the display 107.
[0028]
Next, the operation of the document management system of this embodiment will be described in detail using the flowchart shown in FIG.
[0029]
When there is an instruction to save the document in the document creation software 105 (S301), the document management software 104 determines whether the designated saving process is a document update (S302).
[0030]
If it is determined in step S302 that the designated saving process is saving a new document, the process ends. On the other hand, if the designated saving process is a document update, a document difference extraction process is performed using the natural language processing module 200, the query build component 208, and the search engine 209 (S303). That is, a process of extracting a difference between the changed document 206 whose contents are changed by the document creation software 105 and the saved document 211 before the change is performed.
[0031]
When the difference is extracted in step S 303, the extracted difference is used as the search condition 212, and the stored document 211 stored in the hard disk device 103 is stored using the natural language processing module 200, the query build component 207, and the search engine 209. A search process for searching the stored document 211 having the related description is performed (S304).
[0032]
If no stored document having a related description is found in step S304, there is no stored document 211 that is affected by the change of the changed document 206, and thus the process ends. On the other hand, when a stored document having a related description is searched, the affected part presentation process is performed using the affected part presentation module 210 (S306).
[0033]
When displaying the affected part, not only the corresponding sentence but also the entire stored document 211 is displayed, and the affected part is highlighted on the display 107 by using various display methods such as highlighting the affected part. Can be displayed.
[0034]
The user of the document management system can change the description of the affected part as necessary. For example, assume that the document management system of the present embodiment is applied to a legal database. If there is a legal revision, and the description of a specific document is modified and saved in accordance with the revision, the document management system will present the revisions of other documents to the user. It can be easily amended according to the law revision.
[0035]
When the changed document 206 is stored in the hard disk device 103, whether or not the affected part is presented by performing the above-described document difference extraction process, search process, and affected part presentation process via the input device 106 is written. The management software 104 may be designated. By adopting such a configuration, it is possible to designate and use the presentation of the affected part as necessary.
[0036]
In addition, when it is specified that the affected part is to be presented via the input device 106, a search target document or search range to be searched by the search process is specified from the saved document 211 stored in the hard disk device 103. You may be able to. By adopting such a configuration, it is possible to present the affected part appropriately in accordance with the purpose intended by the user.
[0037]
As described above, according to the document management system of the present embodiment, when the changed document 206 is saved, the sentence corresponding to the related description of the saved document 211 affected by the changed document 206 is automatically presented. As a result, the user's workability and convenience can be improved.
[0038]
In the present embodiment, the document management system is configured by a single computer as shown in FIG. 1, but by providing the document management software 104 in the server, the entire client / server system is The document management system of the embodiment can be constructed. As described above, the document management system according to the present embodiment can be freely designed and changed.
[0039]
In this embodiment, the search process is performed by the vector space method. However, when a keyword can be extracted from a sentence, a search process using a Boolean search may be used.
[0040]
Furthermore, the document management system described in the present embodiment is realized by executing a program (document management software 104) prepared in advance on a computer such as a personal computer or a workstation shown in FIG. This program is recorded on a computer-readable recording medium such as a hard disk, floppy disk, CD-ROM, MO, or DVD, and is executed by being read from the recording medium by the computer. The program can be distributed via the recording medium or via a network.
[0041]
【The invention's effect】
As described above, according to the document management system of the present invention, a document management with a document creation means to create and modify documents, and document storage means for storing documents created or modified the document creating means In the system, when a changed document is stored in the document storage unit, the document difference extraction unit that extracts the difference between the changed document and the document before the change, and the document extracted using the difference extracted by the document difference extraction unit as a search condition The retrieval means for retrieving a document having a related description from the documents stored in the means, and the sentence corresponding to the related description of the document retrieved by the retrieval means are presented as affected parts affected by the changed document. And an affected part presentation means for saving the changed document, when storing the changed document, the part corresponding to the related description of the document affected by the changed document. By automatically presenting the Ntensu, it is possible to improve the user operability and convenience.
[0042]
Further, according to the document management system of the present invention, in the above document management system, the search means performs the search using the vector space method, the document difference extraction means, before the change and a vector representation of a document has been changed Compared with the vector representation of the document and extract the difference between the deleted noun phrase and the newly added noun phrase , so the difference can be extracted efficiently and affected by the modified document A sentence corresponding to a related description of a document can be accurately searched.
[0043]
Further, according to the document management system of the present invention, in the above document management system, further, when saving the document was changed in the document storage means, the document difference extraction means, via the search means and the impact portion presenting means Since there is a designation means for designating whether or not to present the affected part, it is possible to designate and use the presented affected part as necessary, further improving workability and convenience.
[0044]
Further, according to the document management system of the present invention, in the above document management system, specifying means, upon specifies that the presentation of the impact portion, the search means from the document stored in the document storage means Since it is possible to specify a search target document or a search range as a search target, it is possible to present the affected part appropriately in accordance with the purpose intended by the user.
[0045]
Further, according to the computer-readable recording medium of the present invention, since recording a program for causing a computer to function as a document management system or any of the above, by executing the program in the computer, the document has been changed When a document is stored, a sentence corresponding to a related description of a document affected by the changed document is automatically presented, so that the user's workability and convenience can be improved.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of a document management system according to an embodiment.
FIG. 2 is a schematic block diagram showing processing of document management software in the document management system of the present embodiment.
FIG. 3 is a flowchart showing the operation of the document management system of the present embodiment.
[Explanation of symbols]
100 CPU
101 ROM
102 RAM
103 Hard Disk Device 104 Document Management Software 105 Document Creation Software 106 Input Device 107 Display 108 Bus 200 Natural Language Processing Module 201 Dictionary 202 Grammar Dictionary 203 Transposed File 204 Document Set 205 Database Build Component 206 Changed Document 207 Query Build Component 208 Query document 209 Search engine 210 Affected part presentation module 211 Saved document 212 Search condition

Claims (2)

In a document management system comprising a document creation unit that creates and changes a document, and a document storage unit that stores a document created or changed by the document creation unit,
A document for extracting a difference between the changed document and the pre-change document composed of the noun phrase deleted and the newly added noun phrase in the changed document when the changed document is stored in the document storage unit Difference extraction means;
Using the deleted noun phrase extracted as a difference and the newly added noun phrase extracted by the document difference extraction unit as a search condition, a document having a related description is searched from the documents stored in the document storage unit. Search means;
An affected part presenting means for presenting a sentence corresponding to a related description of a document retrieved by the retrieving means as an affected part affected by the changed document;
A document management system comprising: A computer-readable recording medium having recorded thereon a program for causing a computer to function as the document management system according to claim 1 .

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