| Formal concept analysis is a theory of data analysis which based on the structure of lattice. Ever since it has emerged, this method attracts the broad attention from the researchers according to the clear, concise and complete of knowledge description. Now it has already been applied in many fields, such as software engineering, library and information science, data mining etc.The ontology is the definite and formal description of the sharing concept model. The ontology is made up by the relations of the accurately concepts, providing the common understanding and description of one field. The ontology is used by the computer and given the mathematic expression, achieving the inference of one field. Hence, the ontology can be used to improve the degree of accuracy of internet search.Since the emergence of search engines in 1990 and after years of development so far, it has been obtained lots of achievements in the information organization, information search model and sequencing method. But the search engines still have some obvious defects, such as (1) not fully understand of the clients' search demand; (2) the search results are limited by the simple information returning; (3) sequencing algorithm relies on the outside feature of the document excessively. These problems must been solved by the new method. This thesis focuses on the search function based on improving the traditional mobile search engines. The following is our main research works:1. this paper analyses the defects of the search engines, introduces the method of the ontology which is established by using formal concept analysis, and gives the basic effect and value of designing the search engines.2. this paper gives the assumption of realizing the mobile search engines by formal concept analysis and ontology.3. this paper gives the example of some mobile phones to realize search engines, improving the efficiency and accuracy of search, and gives the way to promote intelligent search engines. |
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