KNOWLEDGE EXTRACTING DEVICE, KNOWLEDGE EXTRACTING METHOD AND COMPUTER PROGRAM

摘要

PPROBLEM TO BE SOLVED: To provide a knowledge extracting method capable of further highly accurately extracting knowledge at a high speed, by using text data and structured data. PSOLUTION: This knowledge extracting device has a text dividing part 122 dividing the text data into words, a word pair making part 126 making a word pair by combining the words of the text data, a co-occurrence score calculating part 128 calculating a co-occurrence score of indicating an appearance degree of both composing words composing the word pair in a plurality of text data, a priority determining part 130 determining priority of the word pair based on the co-occurrence score, a text-time series data corresponding part 150 acquiring time series data corresponding to the composing word of the word pair, and a correlation coefficient calculating part 140 calculating a correlation coefficient of the word pair by using the time series data associated with the composing word of the word pair according to the determined priority. PCOPYRIGHT: (C)2009,JPO&INPIT