Đại số gia tử và bài toán sắp xếp mờ tài liệu tiếng Việt

This paper presents the solution to problems of fuzzy ranking Vietnamese documents using approach of Hedge Algebra based on envaluating an accordance of found documents by heuristic criteria. These criteria firstly are evaluated by degree of importance (weight) and then are combined following some aggregation operator to define final evaluation unique number, that will be used for sorting the documents. The experimental results are presented to show the effectiveness of the proposed solution.