A method and a system for document retrieval in the field of national defense science and technology

Abstract

The invention discloses a document retrieval method and a document retrieval system oriented to the field of national defense science and technology. The document retrieval method comprises the following steps of: obtaining a retrieval formula input by a user; Performing semantic analysis on the retrieval expression input by the user, determining a keyword contained in the retrieval expression, and determining a knowledge node to which the retrieval expression belongs; The knowledge node is a knowledge node in a national defense science and technology knowledge system, and the national defensescience and technology knowledge system comprises a plurality of knowledge nodes, and each knowledge node mounts a plurality of documents in the national defense science and technology field. According to the keywords contained in the retrieval formula, screening the corresponding literature from the knowledge nodes to which the retrieval formula belongs, and obtaining the retrieved literature; Displaying the retrieved literature to the user. The document retrieval method or the document retrieval system of the invention can realize precise document retrieval in the field of national defensescience and technology and improve the retrieval accuracy.

Description

technical field [0001] The invention relates to the field of national defense science and technology, in particular to a document retrieval method and system for the field of national defense science and technology. Background technique [0002] With the development of Internet technology, the number of electronic documents is increasing. How to help users, especially scientific researchers, quickly and effectively find the relevant documents they need from a large number of documents has become a particularly important issue. Among the various existing search engines, it can help some scientific researchers to conduct preliminary searches. However, due to the huge system of document data in the background, for scientific researchers, the retrieved documents are usually not professional and accurate enough, and usually require Only multi-layer retrieval can find effective relevant documents. On the other hand, when searching, it is necessary to traverse the entire background...

AI Technical Summary

Problems solved by technology

Among the various existing search engines, it can help some scientific researchers to conduct preliminary searches. However, due to the huge system of document data in the background, for scientific researchers, the retrieved documents are usually not professional and accurate enough, and usually require Only multi-layer search can find effective relevant documents. On the other hand, when searching, it is necessary to traverse the entire background document database, and the search efficiency is not high.

Moreover, for the field of national defense science and technology, there is currently no dedicated retrieval method or system that can achieve accurate and rapid literature retrieval

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