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Reliability of answers in semantic peer-to-peer networks

Gia Hien Nguyen 1, 2
2 GEMO - Integration of data and knowledge distributed over the web
LRI - Laboratoire de Recherche en Informatique, UP11 - Université Paris-Sud - Paris 11, Inria Saclay - Ile de France, CNRS - Centre National de la Recherche Scientifique : UMR8623
Abstract : This thesis improves the reliability of answers in semantic peer-to-peer networks in different ways. The first part of the thesis focuses on the problem of returning only well-founded answers of a query when the global network of such a system is inconsistent. Two algorithms have been proposed. The first one detects causes of inconsistencies. It terminates, is decentralized, complete and correct. The second algorithm uses the results of the first one in order to make only well-founded reasoning. It terminates, is decentralized and correct. Promising results have been obtained from experimentations. The second part of the thesis considers the problem of modeling and handling peers' trust into returned answers. Based on a probabilistic setting, the proposed model of trust has a clear semantics and trust towards answers can be estimated by peers with a good precision using few observations.
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Contributor : Gia Hien Nguyen <>
Submitted on : Thursday, November 27, 2008 - 11:29:09 PM
Last modification on : Thursday, November 19, 2020 - 12:59:39 PM
Long-term archiving on: : Monday, June 7, 2010 - 11:31:52 PM


  • HAL Id : tel-00342652, version 1



Gia Hien Nguyen. Reliability of answers in semantic peer-to-peer networks. Computer Science [cs]. Université Joseph-Fourier - Grenoble I, 2008. English. ⟨tel-00342652⟩



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