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Qualitative temporal reasoning about vague events

Steven Schockaert (UGent) , Martine De Cock (UGent) and Etienne Kerre (UGent)
Author
Organization
Abstract
The temporal boundaries of many real-world events are inherently vague. In this paper, we discuss the problem of qualitative temporal reasoning about such vague events. We show that several interesting reasoning tasks, such as checking satisfiability, checking entailment, and calculating the best truth value bound, can be reduced to reasoning tasks in a well-known point algebra with disjunctions. Furthermore, we identify a maximal tractable subset of qualitative relations to support efficient reasoning.
Keywords
TRACTABLE SUBCLASSES, ALLENS INTERVAL ALGEBRA, KNOWLEDGE, ALGORITHMS, MODEL, TIME

Citation

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Chicago
Schockaert, Steven, Martine De Cock, and Etienne Kerre. 2007. “Qualitative Temporal Reasoning About Vague Events.” In Proceedings of the Twentieth International Joint Conference on Artificial Intelligence (IJCAI  ’07), ed. MM Veloso, 569–574. Freibrug, Germany: IJCAI International Joint Conference on Artificial Intelligence.
APA
Schockaert, S., De Cock, M., & Kerre, E. (2007). Qualitative temporal reasoning about vague events. In M. Veloso (Ed.), Proceedings of the twentieth international joint conference on artificial intelligence (IJCAI  ’07) (pp. 569–574). Presented at the Workshop on Analytics for Noisy Unstructured Text Data, held in conjunction with the 20th International joint conference on Artificial Intelligence (IJCAI 2007), Freibrug, Germany: IJCAI International Joint Conference on Artificial Intelligence.
Vancouver
1.
Schockaert S, De Cock M, Kerre E. Qualitative temporal reasoning about vague events. In: Veloso M, editor. Proceedings of the twentieth international joint conference on artificial intelligence (IJCAI  ’07). Freibrug, Germany: IJCAI International Joint Conference on Artificial Intelligence; 2007. p. 569–74.
MLA
Schockaert, Steven, Martine De Cock, and Etienne Kerre. “Qualitative Temporal Reasoning About Vague Events.” Proceedings of the Twentieth International Joint Conference on Artificial Intelligence (IJCAI  ’07). Ed. MM Veloso. Freibrug, Germany: IJCAI International Joint Conference on Artificial Intelligence, 2007. 569–574. Print.
@inproceedings{365124,
  abstract     = {The temporal boundaries of many real-world events are inherently vague. In this paper, we discuss the problem of qualitative temporal reasoning about such vague events. We show that several interesting reasoning tasks, such as checking satisfiability, checking entailment, and calculating the best truth value bound, can be reduced to reasoning tasks in a well-known point algebra with disjunctions. Furthermore, we identify a maximal tractable subset of qualitative relations to support efficient reasoning.},
  author       = {Schockaert, Steven and De Cock, Martine and Kerre, Etienne},
  booktitle    = {Proceedings of the twentieth international joint conference on artificial intelligence (IJCAI '07)},
  editor       = {Veloso, MM},
  keywords     = {TRACTABLE SUBCLASSES,ALLENS INTERVAL ALGEBRA,KNOWLEDGE,ALGORITHMS,MODEL,TIME},
  language     = {eng},
  location     = {Hyderabad, India},
  pages        = {569--574},
  publisher    = {IJCAI International Joint Conference on Artificial Intelligence},
  title        = {Qualitative temporal reasoning about vague events},
  year         = {2007},
}

Web of Science
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