Patent ID: 7280997
Filing Date: 2007-10-09
Classification: G06F,Y10S

Abstract:
1. A numerical information retrieving device for retrieving numerical information, comprising: input means for inputting a document to be retrieved, the document containing a numerical expression in a first form; an attribute information dictionary which stores therein attribute names indicative of attributes, and conditions under which the attributes are bestowed; attribute bestowal means for bestowing an attribute on the numerical expression in the inputted document by referring to the attribute information dictionary; a conversion information dictionary which stores attribute names indicate of attributes, non-converted character strings, and converted character strings therein; numerical conversion means for converting the numerical expression having the attribute bestowed by the attribute bestowal means, from a non-converted character string into a converted character string by referring to the conversion information dictionary, to convert the numerical expression into a numerical expression in a second form; extraction means for extracting a retrieval keyword from the document after conversion by the numerical conversion means; a document database which stores document data therein; document storage and retrieval means for storing the document after the conversion by the numerical conversion means, the inputted document, and the extracted retrieval keyword in the document database; and output means for outputting a retrieved result; wherein the document storage and retrieval means retrieves any document whose retrieval keyword agrees with the numerical expression after the conversion by the numerical conversion means, from the document database, and sends the retrieved document as the retrieved result to said output means.