The conventional method for recommending documents is based on a statistical technique on the preference of each person on documents and the characteristics of themes/meanings of documents, and accordingly, fundamentally the theme of a document and the method of recommending the document can be deeply related. On the other hand, the present invention is based on the credibility pattern shown by a user on the sentences in a given document, and selects those documents, which a reader group showing a similar credibility pattern to that of the user trusts, and those other documents, which the reader group showing the similar credibility pattern to that of the user does not trust, and those documents, which a reader group showing the opposite credibility pattern to that of the user trusts, and those other documents, which the reader group showing the opposite credibility pattern to that of the user does not trust, and provides the documents to the user. The present invention classifies documents based on the concept of credibility, provides the user simultaneously with documents with various themes compared with the conventional recommendation system based on the characteristics of documents and the preference for documents of groups, provides additional credibility estimation information on the information unknown to the readers yet in diverse necessities and situations for reading, and can assist a reasonable process of selecting documents.;COPYRIGHT KIPO 2020
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