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Method for inferring XML keyword query goal node type

A target node and node type technology, applied in the field of information retrieval, can solve problems such as low query rate, limited precision rate, and inability to infer user search intentions

Inactive Publication Date: 2013-09-04
HOHAI UNIV
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AI Technical Summary

Problems solved by technology

[0005] The above method does not take into account the ambiguity of keywords, and cannot infer the user's search intent, which limits the precision rate
XReal uses statistical methods to solve the ambiguity problem, but when inferring the target node, it cannot guarantee that the obtained target node type has one or more instance nodes containing all keywords
so that the query rate is not high

Method used

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  • Method for inferring XML keyword query goal node type
  • Method for inferring XML keyword query goal node type
  • Method for inferring XML keyword query goal node type

Examples

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Embodiment Construction

[0021] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of this application.

[0022] Such as figure 1 As shown, inferring the XML keyword query target node type includes the following steps:

[0023] (1) Obtain the entity node type in the XML document and calculate the hierarchy of each entity node type;

[0024] (2) Calculate the frequency of query keywords appearing under different entity node types, that is, word frequency;

[0025] (3) Calculate the correlation between each entity node type and the query keyword and sort the entity node types in descending order of correlati...

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Abstract

The invention discloses a method for inferring an XML keyword query goal node type. When user intension for XML keyword query is speculated, emerging frequency of a keyword under different node types and level information of the node types are used, query relevancy is given to the different node types, meanwhile the fact that one factor that a living example node comprises all query keywords exists in the goal node type is combined, and thus the goal node type is obtained. The method solves the problem that user search intention is inferred under the consideration of ambiguity of the keywords in XML query.

Description

technical field [0001] The invention relates to a method for inferring a user's search intention in information retrieval, in particular to a method for inferring an XML keyword query target node type, and belongs to the technical field of information retrieval. Background technique [0002] Due to its scalability, flexibility and self-description, XML has gradually become a recognized standard for data storage and exchange in information systems and an ideal carrier for complex data, and is widely used in the Internet. Therefore, XML query processing has gradually become a hot spot in the field of XML research. [0003] Existing XML query methods can be summarized as structured query and keyword query. Most of the former use structured query language (XQuery or XPath) to query XML documents, and users must master the complex grammatical mechanism of the query language and understand the schema information of XML documents in advance, which puts strict requirements on users...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 冯钧朱祖会唐志贤许潇徐黎明朱跃龙万定生李士进任锋盛震宇史涯晴冯读庆姜康陈焕霖朱康康刘子源
Owner HOHAI UNIV
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