| 摘要 |
PROBLEM TO BE SOLVED: To provide document group sorter, etc., capable of obtaing a desired document subset by confirming a document sorting viewpoint which is used so far and the unused one. SOLUTION: This document group sorter to sort a document set according to the contents of documents is provided with a document analyzing part 2 to extract information required for a sorting processing by analyzing document data of each document set as a sorting object, a sorting processing specifying part 7 to specify a sorting viewpoint, etc., in the case of the sorting processing, a sorting processing part 4 to sort the document set into plural document subsets according to the information extracted by the document analyzing part 2 and the sorting viewpoint specified by the sorting processing specifying part 7, a sorting processing history holding part 5 to hold history information of a sorting processing result, an unused viewpoint detecting part 8 to detect the sorting viewpoint which is included in the document set but still unused based on the history information and an unused viewpoint display part 10 to display the detected sorting viewpoint when the sorting viewpoint is specified.
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