Patent Document ID: 8510249
Application ID: 13063231

Base Claim:
1. An information analysis apparatus for performing an analysis on text information to determine whether or not the text information corresponds to target information, comprising: a storage device that stores the text information; a density estimation unit that estimates, in units of analysis each composed of a plurality of sentences of the text information, a density indicating a degree to which each unit of analysis contains the target information; and a determination unit that obtains an evaluation value indicating a degree to which each sentence included in each unit of analysis corresponds to the target information from the estimated density of the unit of analysis, and determines whether or not the sentence is the target information based on the evaluation value.

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Claim 10:
10. The information analysis apparatus according to claim 1 , wherein the determination unit obtains, for each sentence included in a plurality of units of analysis, at least one of a sum of densities of the units of analysis including the sentence, an average of the densities and a standard deviation of the densities, calculates the evaluation value of the sentence using the obtained value, and if the evaluation value exceeds a predetermined threshold value, determines the sentence as corresponding to the target information.