Research On Optimization Of Ontology-based Knowledge Retrieval Model

Ontology was originally a philosophical concept, it is the nature of philosophical problems exist. But in recent decades, the word was applied to the computer industry, and in artificial intelligence, computer languages and database theory, play an increasingly important role. Currently, more unified concept for the ontology view is Studer's explanation:a clear conceptual model of shared formal specification. Expression of the concept as an effective model of semantic, ontology in the field of Library and Information Science has many applications, such as information systems modeling, information extraction, Semantic Web, search engines, knowledge engineering, document indexing, knowledge management, knowledge base construction, Construction and other library information resources.Formal Concept Analysis is a mathematical concept and concept hierarchy based on the field of applied mathematics in 1982, Professor Wille in Germany as a mathematical theory first introduced the concept lattice, and laid the theory of formal concept analysis Based on concept lattice theory of formal concept analysis is the core data structure, which is considered to be knowledge discovery and data analysis, a powerful mathematical tool. At present, the formal concept analysis, the concept has been extensive use of aggregation, data mining analysis, information retrieval, knowledge discovery, ontology engineering and its applications.In recent years, ontology and formal concept analysis has been a research focus, Onto logy-based Knowledge Retrieval of related research has made many achievements, and as for formal concept analysis of research, some scholars find the concept of ontology and between the two forms of Closely linked, so the body combined with the study of formal concept analysis and apply that knowledge retrieval is gradually to be known. Formal concept analysis and ontologies different but linked, the two can be combined to some extent. Formal concept analysis can be used as a technique can be applied to ontology engineering and ontology can improve the application of formal concept analysis. Application of concept lattice of formal concept analysis to extract the conceptual level, as the basis for creating ontologies, can help generate ontology automatically or semi-automatic. Conceptual analysis can be applied to the situation ontology merging, ontology visualization, ontology navigation and analysis tasks. Formal concept analysis of property does not contain any structure, if its properties in the concept of ontology as a concept in property relations and interdependencies between, can improve the quality of the application of formal concept analysis, formal concept analysis to improve Application.Although the ontology and formal concept analysis can be used for knowledge retrieval, and combined the two models applied to the retrieval of knowledge has made some achievements, knowledge retrieval produced a positive effect. But now the concept of body and by the combination of form, mainly to the formal concept analysis as a technical tool, and applied to the Domain Ontology, conceptual clustering, data mining, etc., and not from the fusion of body and the mechanism of formal concept analysis Perspective problem. Therefore, this concept in the ontology analysis and form a more careful study, try to put the body and the mechanism of integration of formal concept analysis, and to use onto logy-based knowledge retrieval model optimization.Specifically, respectively, from philosophy, mathematics, knowledge management and knowledge management perspective of formal concept analysis combined with body condition, and then with the formal concept analysis based on ontology integration mechanism, both in the knowledge of the specific content of the fusion model Including:the core area concept description, hidden areas to explore the concept of establishing the concept of domain ontology Kind-of relations, building domain ontology prototype, visual editing, formal description and reasoning, ontology or ontology re-spend reconstruction, ontology Mapping eight areas.In summary, this paper analyzes the concept of body and form the similarities and differences, summed up both the mechanism of fusion, and fusion of the two mechanisms of knowledge retrieval applied to the optimization model, the expected further improvement in the follow-up study of ontology and The integration mechanism of formal concept analysis, and on this theory to generate new knowledge retrieval model to improve the knowledge retrieval precision, recall, etc., to meet the needs of the user's search.