Water conservation domain information retrieval system and method based on semanteme

Abstract

The invention discloses a water conservation domain information retrieval system and a water conservation domain information retrieval method based on semanteme. The system comprises an information acquisition and storage module for acquiring water conservation subject information from the Internet, storing the water conservation subject information into a water conservation subject information base and constructing an index, a semanteme body module for storing a water conservation domain body and a hownet semanteme body and finishing calculation for similarity of domain vocabularies, and a semanteme query processing module. The method comprises the following steps of: describing domain information by using a fuzzy resource description framework, and constructing the index for the water conservation information by adopting Lucene; constructing a water conservation domain body on the basis of a water conservation official document subject vocabulary table, and performing semanteme expansion on the water conservation professional vocabularies through a Jena inference engine according to the water conservation body to perform the semanteme expansion on general vocabularies on the basis of Hownet; and calculating the relevancy between an expanded vocabulary and a retrieval vocabulary by an improved hownet semanteme vocabulary similarity calculation method. By the system and the method, semanteme expansion is performed on the retrieval vocabulary, and the recall ratio and the precision ratio of the information are improved.

Description

technical field [0001] The invention relates to a semantic-based information retrieval system and method in the field of water conservancy, belonging to the field of intelligent information retrieval. Background technique [0002] The traditional water conservancy field information search engine builds an index for the keywords in the data set. When the user submits a keyword query request to the search engine, the search engine retrieves the data set requested by the user in the database through keyword matching, and feeds back the results to the user. This kind of search engine's processing of queries is limited to the surface form of words, which makes traditional Web search engines have defects such as "faithful expression", "expression differences" and "vocabulary islands", which reduces the user's ability to search. The recall and precision of the results. [0003] How to find valuable information in information resources in the field of water conservancy and extract...

AI Technical Summary

Problems solved by technology

At present, water conservancy information resources have not provided semantic information that computers can understand, and computers cannot automatically identify them, and can only be directly read and processed by users, which limits the ability of computers to automatically analyze and intelligently process in the field of water conservancy information retrieval, and directly restricts The development process of water conservancy informatization and the social service ability of water conservancy industry

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