DOCUMENT DATA PROVIDING DEVICE, DOCUMENT DATA PROVIDING SYSTEM, DOCUMENT DATA PROVIDING METHOD AND STORAGE MEDIUM RECORDING PROGRAM PROVIDING DOCUMENT DATA

摘要

PROBLEM TO BE SOLVED: To provide a user with document data having common feature among many document data. SOLUTION: A feature word extracting part 33 extracts words from document data designated with a document identification ID of dated document data 22, accumulates the number of words of each word in every area and period and obtains an appearance frequency. It further extracts the fixed number of words having large appearance frequencies of every area and period as feature words. When a user designates an area and a period, feature words of document data in the period are displayed, and when a specified feature word is selected, the document headline, etc., of the document data including the feature word are displayed.