Research On The Key Technology Of Agricultural Knowledge Base Retrieval Based On Ontology

With the rapid development of Internet technology,information into the era of the big bang,the traditional way of information organization,information retrieval in the face of the rapid growth of such information resources,lack of confidence.Based on the reality of agriculture,this paper chooses the key technology of ontology-based agricultural knowledge base as the research object to solve the problem of how to provide more accurate and comprehensive agricultural information for farmers and related practitioners in the big bang of information.Retrieval of Agricultural Knowledge Base Based on Ontology.This paper mainly uses the ontology technology to construct the agricultural knowledge base,and makes the semantic reasoning according to the semantic relation between the ontology and ontology in the knowledge base,and makes the retrieval technology rise from the traditional keyword retrieval to the semantic retrieval level.The main contents of this paper are as follows:1.The Construction Method of Agricultural Ontology Knowledge Base.With the development of ontology construction technology,the researchers put forward the construction method of many ontology knowledge bases,but there is no common method.Therefore,according to the agricultural knowledge base construction environment,construction needs of different,put forward the corresponding construction method.2.Acquisition of Information Documents in Agricultural Ontology Knowledge Base.This article uses crawler technology to obtain agricultural information documents from the Internet,the world’s largest document library.However,the existence of web pages of data is difficult to direct use of the problem,so need to find an efficient and convenient way to get valuable information.3.The Construction of Domain Ontology in Agricultural Ontology Knowledge Base.In this paper,the use of the relevant characteristics of web pages,combined with word segmentation technology,from the web page document extracted from the concept of ontology.The conceptual ontology extracted from web pages is screened by Hopfield neural network algorithm,and the domain ontology influencing the agricultural field is selected.4.The Construction of Domain Ontology in Agricultural Ontology Knowledge Base.After selecting the influential domain ontology,combining with the relationship between vocabulary and vocabulary in the agricultural science thesauri,we construct the related relation in the domain of the knowledge base5.Semantic Reasoning Algorithm in Agricultural Ontology Knowledge Base.According to the characteristics of the relationship between domain ontology and domain ontology in agricultural knowledge base,a semantic reasoning algorithm suitable for agricultural ontology knowledge base is proposed.Semantic reasoning algorithm for semantic retrieval of agricultural knowledge base,to provide users with accurate and comprehensive agricultural information...