9. The storage medium according to claim 5 or 6 , wherein the evaluation pair analysis step has an evaluation degree determination step of detecting, for each object, the appearing number of each evaluation expression that a plurality of objects which belong to the category has in common, and subjecting degrees of the evaluation expressions of a plurality of objects to comparative display.
10. The storage medium according to claim 9 , wherein in the evaluation degree determination step, a radar chart is drawn and displayed according to the appearing number of a plurality of the evaluation expressions detected for the object.