Distributed Defeasible Contextual Reasoning in Ambient Computing

Antonis Bikakis, Grigoris Antoniou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

23 Citations (Scopus)


The study of ambient computing environments and pervasive computing systems has introduced new research challenges in the field of Distributed Artificial Intelligence. The imperfect nature of context, the different viewpoints from which the ambient agents face the available context, and their heterogeneity with respect to the language and inference system that they use cannot be efficiently handled by the classical centralized reasoning approaches followed by most of the systems presented so far. The current paper proposes a distributed reasoning approach from the field of Multi-Context Systems (MCS) that handles these requirements by modeling ambient agents as peers in a P2P system, local context knowledge as local rule theories, and mapping rules through which an ambient agent imports context knowledge from other ambient agents as defeasible rules. To resolve potential inconsistencies that may derive from the interaction of context theories through the mappings, it uses a preference relation, which may express the trust that an agent has in the knowledge imported by other ambient agents. The paper also describes a specific distributed algorithm for query evaluation in the proposed MCS framework, analyzes its formal properties, and demonstrates its use in three use case scenarios from the Ambient Intelligence domain.

Original languageEnglish
Title of host publicationAmbient Intelligence
Subtitle of host publicationEuropean Conference, AmI 2008, Proceedings
EditorsEmile Aarts, James L. Crowley, Boris de Ruyter, Heinz Gerhäuser, Alexander Pflaum, Janina Schmidt, Reiner Wichert
Place of PublicationBerlin
PublisherSpringer-Verlag Berlin Heidelberg
Number of pages18
Volume5355 LNCS
ISBN (Electronic)9783540896173
ISBN (Print)3540896163, 9783540896166
Publication statusPublished - 3 Dec 2008
Externally publishedYes
Event2nd European Conference on Ambient Intelligence - Nuremberg, Germany
Duration: 19 Nov 200822 Nov 2008
Conference number: 2

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherSpringer-Verlag Berlin Heidelberg
Volume5355 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference2nd European Conference on Ambient Intelligence
Abbreviated titleAmI 2008


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