Retrieval method and device for ontology knowledge base
A technology of knowledge base and ontology, applied in the information field, can solve the problems of low retrieval efficiency and achieve the effect of improving retrieval efficiency
Inactive Publication Date: 2013-09-25
PEKING UNIV
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[0004] The invention provides a retrieval method and device for an ontology knowledge base to solve the problem of low retrieval efficiency in the prior art
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[0020] The technical solution of the present invention will be described in further detail below through specific embodiments and accompanying drawings.
[0021] figure 1 A schematic flowchart of an embodiment of a retrieval method of an ontology knowledge base provided by the present invention. Such as figure 1 As shown, the execution subjects of the following steps may specifically be various devices with a retrieval function, such as mobile phones, personal computers, PADs, and the like. The method can include:
[0022] S101, acquiring the first keyword input by the user;
[0023] S102. Retrieve the first instance related to the instance to which the first keyword belongs in the ontology knowledge base of the corresponding field. The ontology knowledge base includes a plurality of search items, and each search item includes a mapping between multiple instances in different concepts. relationship, each concept includes multiple instances, and the instance to which the fi...
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The invention provides a retrieval method and device for an ontology knowledge base. The method comprises the steps of obtaining a first keyword input by a user; retrieving first examples related with examples which the first keyword belongs to in the ontology knowledge base of a corresponding field, enabling the ontology knowledge base to comprise a plurality of retrieval entries, and enabling every retrieval entry to comprise mapping relations among a plurality of examples in different concepts; performing keyword expansion on the first keyword according to second examples related with the first examples, and obtaining a second keyword; and retrieving third examples related with examples which the second keyword belongs to in the ontology knowledge base. According to the retrieval method and device for the ontology knowledge base, the first examples which the first keyword belongs to are retrieved in the ontology knowledge base, the first keyword is expanded to be the second keyword according to the second examples related with the first examples, the third examples related with the examples which the second keyword belongs to are retrieved in the ontology knowledge base, and retrieval efficiency is improved.
Description
technical field [0001] The invention relates to the field of information technology, in particular to a retrieval method and device for an ontology knowledge base. Background technique [0002] In the prior art, knowledge bases in different business fields are built by using a large number of manual searches of existing network information resources. When a search engine searches resource information in the knowledge base, the knowledge base will return all web pages containing search keywords one by one. , giving a large number of retrieval results from a grammatical point of view. [0003] However, in the prior art, the semantic information of each page needs to be analyzed and interpreted by the searcher himself, so the retrieval efficiency is low. Contents of the invention [0004] The invention provides a retrieval method and device of an ontology knowledge base to solve the problem of low retrieval efficiency in the prior art. [0005] On the one hand, the present ...
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IPC IPC(8): G06F17/30
Inventor 李戈金芝王蓓邢雪源
Owner PEKING UNIV