Information sharing agents in a peer data exchange system

被引：0
|
作者：
Bertossi, Leopoldo [1 ]
Bravo, Loreto [2 ]
机构：
[1] Carleton Univ, Sch Comp Sci, Ottawa, ON K1S 5B6, Canada
[2] Univ Edinburgh, Sch Informat, Edinburgh, Midlothian, Scotland
来源：
DATA MANAGEMENT IN GRID AND PEER-TO-PEER SYSTEMS, PROCEEDINGS | 2008年 / 5187卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present a semantics and answer set programs for relational peer data exchange systems. When a peer answers a query, it exchanges data with other peers in order to supplement or modify its own data source. The data exchange relationships between peers are specified by logical sentences called data exchange constraints and trust relationships, which together determine how data is moved around (in order to keep them satisfied). This process determines virtual, alternative instances for a peer that can be specified as the models of an answer set program. The peer consistent answers to a query that are returned by a peer are those that are invariant tinder all these instances. The logic program can be used to compute peer consistent answers.
引用
收藏
页码：70 / +
页数：3
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