Uncertain schema matching based on interval fuzzy similarities

被引:0
作者
Weng, Nian-Feng [1 ,2 ]
Diao, Xing-Chun [2 ]
机构
[1] PLA University of Science and Technology, Nanjing
[2] Nanjing Telecommunication Technology Institute, Nanjing
关键词
Fuzzy decision making; Interval fuzzy similarity; Schema matching; Uncertainty;
D O I
10.4156/ijact.vol4.issue1.18
中图分类号
学科分类号
摘要
Schema matching is very important in many database applications. Due to the fuzziness of knowledge representation, schema matching contains uncertainty inherently. In order to manage the uncertainty of schema matching process, fuzzy decision making theory is employed and the similarity of schema element pair is given in the form of interval fuzzy number. According to the concept of composite schema matching, interval fuzzy similarities are constructed and a candidate mapping selection procedure is proposed based on the priority of interval fuzzy similarities. After candidate mappings are selected, we propose a semantic conflict elimination procedure to remove false positive candidate mappings. Many existing schema matching algorithms can only identify 1:1 mappings, while our algorithm can identify both 1:1 and 1:n mappings. The quality of our uncertain schema matching algorithm is verified by experiments.
引用
收藏
页码:163 / 171
页数:8
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