A Retrieval Method by Combination of Semantics with Keyword in Knowledge Management

Based on the relation of the generalization and aggregation in ontology,our method produces a great number of subqueries from the original query. Meanwhile,corresponding value is transferred to subquery from the original query according to the semantic distance.We can also get the result by matching the keyword and give each result a weighted value reflecting the match degree of keyword after the ordered weighted averaging (OWA) operation.We combine these two parts of weighted values and rank the result,the user can read the information in the order of importance.In this paper,we unified the query rewriting and transfer of weighted value into the concept of query rewriting template (QRT).