Query Translation on the Fly in Deep Web Integration  

作　　者：JIANG Fangjiao JIA Linlin MENG Xiaofeng 

机构地区：[1]School of Information, Renmin University of China, Beijing 100872, China

出　　处：《Wuhan University Journal of Natural Sciences》2007年第5期819-824,共6页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (60573091);the Natural Science Foundation of Beijing(4073035);the Key Project of Ministry of Education of China (03044)

摘　　要：To facilitate users to access the desired information, many researches have dedicated to the Deep Web （i.e. Web databases） integration. We focus on query translation which is an important part of the Deep Web integration. Our aim is to construct automatically a set of constraints mapping rules so that the system can translate the query from the integrated interface to the Web database interfaces based on them. We construct a concept hierarchy for the attributes of the query interfaces, especially, store the synonyms and the types （e.g. Number, Text, etc.） for every concept At the same time, we construct the data hierarchies for some concepts if necessary. Then we present an algorithm to generate the constraint mapping rules based on these hierarchies. The approach is suitable for the scalability of such application and can be extended easily from one domain to another for its domain independent feature. The results of experiment show its effectiveness and efficiency.To facilitate users to access the desired information, many researches have dedicated to the Deep Web （i.e. Web databases） integration. We focus on query translation which is an important part of the Deep Web integration. Our aim is to construct automatically a set of constraints mapping rules so that the system can translate the query from the integrated interface to the Web database interfaces based on them. We construct a concept hierarchy for the attributes of the query interfaces, especially, store the synonyms and the types （e.g. Number, Text, etc.） for every concept At the same time, we construct the data hierarchies for some concepts if necessary. Then we present an algorithm to generate the constraint mapping rules based on these hierarchies. The approach is suitable for the scalability of such application and can be extended easily from one domain to another for its domain independent feature. The results of experiment show its effectiveness and efficiency.

关 键 词：Deep Web data integration query translation constraint mapping rules 

分 类 号：TP393.09[自动化与计算机技术—计算机应用技术]