PROBLEM TO BE SOLVED: To provide a discourse content item calculation system for efficiently calculating discourse content item information, by an utterer, including the information on a talk script utilization situation based on the analysis result of a structure of a discourse data.SOLUTION: Discourse data 101 and discourse semantics 200 that includes abbreviated information 61 are input into, and the discourse content item information including the information on the talk script utilization situation is output from the discourse content item calculation system 1. The discourse content item calculation system comprises: a similarity calculation part 70 for calculating the similarity between the block in the abbreviated discourse data 101 and each talk script and outputting the most similar talk script as similarity information 71; and a discourse content item calculation part 80 for determining that, if similarity of each block in the abbreviated discourse data 101 is higher than a threshold value, the block is uttered according to a corresponding talk script, and outputting discourse content item information 300 including the ratio of uttered blocks according to a talk script with respect to the each utterer.
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