Information processing device for detecting an illegal stored document, illegal stored document detection method and recording medium
First Claim
1. An information processing device, comprising:
- a database which includes a hierarchical structure and stores electronic documents;
a user information management unit which stores rank values of users of said database, wherein each rank value of the rank values corresponds to height of an authority level for a user;
a class/document information management unit which stores authorization degrees of electronic documents or of electronic document groups, and authorization degrees of respective document classes in said database where the electronic documents or document groups are stored;
a document information control unit which analyzes the electronic documents stored in said database and combines together said electronic documents having mutual similarity in a degree equal to or higher than a certain level into a similar document group; and
a document-class information control unit which calculates authorization degrees of respective document classes in said database in terms of each said similar document group with reference to said rank values of database users, analyzes said authorization degrees, thus detects an electronic document or an electronic document group whose authorization setting is improper based on results of the analyzing said authorization degrees, compares the authorization degree of an arbitrary similar document group in the last analysis with that at present and, if the authorization degree is increased, determines the authorization setting as improper and notifies a user of it.
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Accused Products
Abstract
The present invention provides an information processing device which can detect illegal authorization setting efficiently in a short period of time. The information processing device includes a database which stores electronic documents, a means for storing rank values of users of the database, a means for storing the authorization degree of an electronic document or an electronic document group and authorization degrees of respective document classes of the database, a means for analyzing the electronic documents and combining together documents having mutual similarity in a degree equal to or higher than a certain level into a similar document group, and a means for analyzing authorization degrees of respective document classes in the database with reference to the rank values of the users, and thus detecting an electronic document or an electronic document group whose authorization setting is improper.
17 Citations
10 Claims
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1. An information processing device, comprising:
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a database which includes a hierarchical structure and stores electronic documents; a user information management unit which stores rank values of users of said database, wherein each rank value of the rank values corresponds to height of an authority level for a user; a class/document information management unit which stores authorization degrees of electronic documents or of electronic document groups, and authorization degrees of respective document classes in said database where the electronic documents or document groups are stored; a document information control unit which analyzes the electronic documents stored in said database and combines together said electronic documents having mutual similarity in a degree equal to or higher than a certain level into a similar document group; and a document-class information control unit which calculates authorization degrees of respective document classes in said database in terms of each said similar document group with reference to said rank values of database users, analyzes said authorization degrees, thus detects an electronic document or an electronic document group whose authorization setting is improper based on results of the analyzing said authorization degrees, compares the authorization degree of an arbitrary similar document group in the last analysis with that at present and, if the authorization degree is increased, determines the authorization setting as improper and notifies a user of it. - View Dependent Claims (2, 3, 4, 5)
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6. An illegal stored document detection method, wherein,
a computer analyzes electronic documents stored in a database having a hierarchical structure, records the electronic documents having mutual similarity in a degree equal to or higher than a certain level into a similar document list, classifies the similar document list into similar document groups according to said hierarchical structure of the database, calculates an authorization degree of each document class in said database in terms of each said similar document group by referring to rank values of database users stored in a user information management unit, and stores the result in a class/document information management unit, wherein each rank value of the rank values corresponds to a-height of an authority level for a user, refers to, at the class/document information management unit, authorization degrees of respective document classes in which similar document groups are stored, and analyzes said authorization degrees, detects an electronic document or an electronic document group whose authorization setting is improper based on results of the analyzing said authorization degrees, compares the authorization degree of an arbitrary similar document group in the last analysis with that at present and, if the authorization degree is increased, determines the authorization setting as improper and notifies a user of it.
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10. A non-volatile recording medium storing a program for causing a computer to execute the processing which comprises:
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analyzing electronic documents stored in a database having a hierarchical structure, recording the electronic documents having mutual similarity in a degree equal to or higher than a certain level into a similar document list, classifying the similar document list into similar document groups according to said hierarchical structure of the database, calculating an authorization degree of each document class in said database in terms of each said similar document group by referring to rank values of database users stored in a user information management unit, and storing the result in a class/document information management unit, wherein each rank value of the rank values corresponds to height of an authority level for a user; and referring to, at the class/document information management unit, authorization degrees of respective document classes in which similar document groups are stored, and analyzing said authorization degrees, detecting an electronic document or an electronic document group whose authorization setting is improper based on results of the analyzing said authorization degrees, comparing the authorization degree of an arbitrary similar document group in the last analysis with that at present and, if the authorization degree is increased, determining the authorization setting as improper and notifying a user of it.
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Specification