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Research on Schema Extraction from Deep Web Query Interface

Author: ZhuHuiFeng
Tutor: ZuoWanLi
School: Jilin University
Course: Computer Software and Theory
Keywords: Deep Web Query interface Domain ontology Schema extraction
CLC: TP311.13
Type: Master's thesis
Year: 2011
Downloads: 39
Quote: 0
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Abstract


The research object of this article is to establish a sub-module in a uniform depth network entrance system that extract DeepWeb query interface mode , raised from the unit angle of internal coding and visual query interface definitions given query interface four kinds of main form properties manifestations in , and given the Deep Web query interface schema extraction framework , the first based on heuristic rules positioning query interface area , and then query interface parsing form tag information using the internal coding rules and visual form attribute extraction unit rule , and finally , under the guidance of the domain ontology , semantic query interface mode , through the framework of heuristic rules do not submit a query to locate the query interface , this way is relatively submitted queries more efficient way , parse tag information query interface query interface based on valid data unit , then first of all take advantage of the higher-priority internal coding rules the form attribute extraction , and then use visual unit rules form attribute extraction , the internal coding rules can reduce visual unit rules under the guidance of the query interface form attribute extraction error rate , Finally, the three kinds of semantic relationships query interface form , under the guidance of the domain ontology query interface mode , obviously this makes the query interface semantics better. The experimental results show that the query interface schema extraction framework proposed in this paper is feasible and efficient .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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