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The Method Of Cultural Resource Query Extension Based On Domain Ontology And Its Application

Posted on:2018-08-27Degree:MasterType:Thesis
Country:ChinaCandidate:P WuFull Text:PDF
GTID:2348330518976276Subject:Education Technology
Abstract/Summary:PDF Full Text Request
With the rapid development of the "Internet +" and informatization, various information is growing explosively. It has become the most urgent problem how to retrieve the information needed by users quickly and accurately in the vast amount of information resourcesAlthough single keyword query based on traditional methods may solve users' query needs, its query results are not so satisfactory since it is unable to resolve the problem that some words may have multiple meanings or one meaning can be represented using different words. Therefore, it is difficult to meet the research needs of users. Ontology Exchange As the logic language in artificial intelligence and computer languages,Ontology played a major role in the field of retrieval. It does not only support semantic relationships between concepts, and can be shared and formalized. This paper introduces Ontology technology into the cultural resource inquiry system based on domain ontology.The system has fully mined semantic correlation between music and cultural resources,improving retrieval performance of the system, which meets the needs of users at the semantic level. It has also laid a good foundation for the cultural resources of Tujia music learning, protection, and development.Firstly, this papers studies related theories and concepts of Ontology and combs building principles, building methods, building process, coding languages and building tool. And according to the unique property of music culture resources of Tu minority, this paper combs related concepts, data properties, object properties, and it models them to build the musical cultural resources ontology of Tu minority.Secondly, the query expansion techniques are studied. This paper introduces musical cultural resources of Tu minority into query expansion. Ontology technology can provide shared, formal, explicit, conceptual representation of information, so that it can provide a query extension in the form of semantics, can improve the query extension process based on local analysis. And the combination of the two can effectively improve the accuracy of the query. By calculating the similarity between the concepts of the ontology, the concept of the threshold is added to the query lexicon. And the method of Jena's ontology is used to retrieve the ontology library of Tu minority music culture resources, and return the query results to users.Finally, combined with Solr search engine technology, the cultural resource retrieval system based on domain ontology is designed and implemented. This paper introduces the method of ontology technology into the query expansion method, and realizes the reasoning and expansion of the query word, and finally obtains the query result. The validity of the method is verified by comparing with the method based on the keyword query. The retrieval system based on the ontology of the Tu minority music culture resource can effectively improve the retrieval performance and meet the query requirements of the user by comparing the experimental results.The introduced ontology method can be applied to music and cultural resource areas,and it can also be applied to other areas, this approach has broad application prospects.
Keywords/Search Tags:Domain ontology, Tujia music and cultural resources, Query expansion, Search
PDF Full Text Request
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