DocumentCode :
3193638
Title :
A possibility theory-based approach to the handling of uncertain relations between temporal points
Author :
Hadjali, Allel ; Dubois, Didier ; Prade, Henri
Author_Institution :
IRISA/ENSSAT, Lannion, France
fYear :
2004
fDate :
1-3 July 2004
Firstpage :
36
Lastpage :
43
Abstract :
Uncertain relations between temporal points are represented by means of possibility distributions over the three basic relations "smaller than", "equal to", and "greater than". Operations for computing inverse relations, for composing relations, for combining relations coming from different sources and pertaining to the same temporal points, or for representing negative information, are defined. An illustrative example of representing and reasoning with uncertain temporal relations is given. This paper shows how possibilistic temporal uncertainty can be handled in the setting of point algebra. Moreover, the paper emphasizes the advantages of the possibilistic approach over a probabilistic approach previously proposed. This work does for the temporal point algebra what the authors previously did for the temporal interval algebra.
Keywords :
temporal reasoning; uncertainty handling; computing inverse relations; possibility distributions; probabilistic approach; temporal interval algebra; temporal point algebra; temporal points; temporal uncertainty; uncertain relations; Algebra; Artificial intelligence; Calculus; Fuzzy logic; Fuzzy sets; Medical diagnosis; Natural languages; Ontologies; Possibility theory; Uncertainty;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Temporal Representation and Reasoning, 2004. TIME 2004. Proceedings. 11th International Symposium on
ISSN :
1550-1311
Print_ISBN :
0-7695-2155-X
Type :
conf
DOI :
10.1109/TIME.2004.1314417
Filename :
1314417
Link To Document :
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