Method and apparatus for document information management

A document information management system storing a plurality of documents with at least their registrant user information and content information as retrieval information,

• wherein in response to a document registration request to register a new document, extracting content information from the new document,
• wherein, from the plurality of documents currently stored in said document information management system a subset of documents whose content information have high similarity with said extracted content information of the new document is retrieved,
• wherein the registrants of said retrieved subset of documents are identified,
• wherein the identified registrants are notified that the new document has been registered in the document information management system, and
• wherein said step of retrieving generates a seed document from the new document and compares said seed document with the plurality of documents currently stored in said document information management system to retrieve a document of content information having high similarity.

A computer-readable storage medium for storing thereon a program for performing a document information management method for a document information management system storing a plurality of documents with at least their registrant user information and content information as retrieval information, the method performed by the program being executed by the document information management system and comprising the steps of:

• in response to a document registration request to register a new document from a user I, extracting content information from the new document
• retrieving from the plurality of documents currently stored in said document information management system a subset of documents whose content information have high similarity with said extracted content information of the new document;
• identifying the registrants of the retrieved subset of documents;
• notifying, that the new document has been registered in the document information management system, to the identified registrants, and
• wherein said step of retrieving generates a seed document from the new document and compares said seed document with the plurality of documents currently stored in said document information management system to retrieve a document of content information having high similarity.