Author name of the document regarding object ones, from the database where the information regarding the appearance time of document classification, the notice point and the notice point of reference-related aforementioned object ones is remembered, the number of documents which the specified author wrote, appearance frequency of the notice point of specified object ones of the aforementioned specified author, appearance time, appearance interval, reference relationship of the classification of the aforementioned document or aforementioned document each of them is extracted at least, on the basis of the information which is extracted, the aforementioned specified author some kind of effect is produced vis-a-vis aforementioned specified object ones of, the author influence information presumption expedient which presumes the information of the author influence which is the informationIt possesses.
展开▼