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Text mining system for analysis target data, a text mining method for analysis target data and a recording medium for recording analysis target data
Text mining system for analysis target data, a text mining method for analysis target data and a recording medium for recording analysis target data
A text mining system including an analysis target search unit which judges whether a commonality in expressions among text data exists, an analysis viewpoint generation unit which generates an analysis viewpoint to extract an expression from the target data, a positive example set identification unit which identifies a positive example set including an expression matching the generated analysis viewpoint in the target data, a characteristic quantity calculation unit which calculates a characteristic quantity showing a degree of characterizing the positive example set of expressions in the target data, and a characteristic expression ranking unit which extracts expressions having the calculated characteristic quantity equal to or greater than a predetermined threshold as characteristic expressions and ranks the extracted characteristic expressions, and the target search unit extracts the analysis viewpoint among which a difference in ranks provided for the characteristic expressions is equal to or greater than a predetermined threshold.
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