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Research on Holistic Schema Matching Technology on Query Interface

Author: HeLingLing
Tutor: LiuGuoHua
School: Yanshan University
Course: Applied Computer Technology
Keywords: Deep Web Data Integration Data sets Query interface The concept of divided NP-complete Weights
CLC: TP311.52
Type: Master's thesis
Year: 2010
Downloads: 27
Quote: 0
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Abstract


The query interface pattern matching deep web data integration related technical difficulty of the study and the breakthrough point , the overall pattern matching technology has become a hot topic in the field of pattern matching the query interface . Query interface overall pattern matching technology can match the same field at the same time all modes , thus greatly improving the matching efficiency . The overall pattern matching query interface technology for a more in-depth study on the basis of comprehensive analysis of the overall pattern matching techniques Research . Attribute preprocessing stage attribute character matching problem improved WPrimeAtt algorithm , the algorithm introduced thematic data set attributes the right values ??to attributes prime number of the improved algorithm is not dependent on the threshold and can ensure the collection of properties for the stability analysis and proof of the theory and algorithms that instance . Secondly , the overall pattern matching stage the group attributes mining and synonym matching problem , the proposed the GroupAttMining the algorithm and Discoverysynonym algorithm improved the algorithm is based on the the attribute positive relationship and negative relationship formula attribute complex pattern matching and simple pattern matching and theoretical proof and instance of the given algorithm analysis . Again, for concepts in the overall pattern matching problem , optimized version of the optimal mode model concept put forward the concept of partitioning problem , and prove that the concept of division is NP-complete theorem and the overall pattern matching is NP-complete theorem in proposed on the basis of the concept-partition algorithm and the HSM algorithm to achieve the concept of divided established and the overall pattern match, and gives proof of the theory and algorithms instance analysis . Finally, the experimental verification of these algorithms , given the experimental results chart , and the experimental results were analyzed and compared , to verify the correctness of the algorithm .

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