Determining whether text information corresponds to target information

An information analysis method for performing an analysis on text information to determine whether or not the text information corresponds to target information, comprising the steps of:

• (a) estimating, 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
• (b) obtaining 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 determining whether or not the sentence is the target information based on the evaluation value.

A non-transitory, computer-readable recording medium that records a program for causing a computer to perform an analysis on text information to determine whether or not the text information corresponds to target information, the program including instructions to cause the computer to execute the steps of:

• (a) estimating, in units of analysis each composed of a plurality of sentences of the text information, a density indicating a degree to which the unit of analysis contains the target information;
• and
• (b) obtaining 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 determining whether or not the sentence is the target information based on the evaluation value.