Modelling and Reasoning with Uncertain Event-observations for Event Inference
Modelling and Reasoning with Uncertain Event-observations for Event Inference
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DOI:
10.5220/0006254103080317
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发表时间:
2017-04
期刊:
影响因子:
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通讯作者:
S. Calderwood;Kevin McAreavey;Weiru Liu;Jun Hong
中科院分区:
文献类型:
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作者:
S. Calderwood;Kevin McAreavey;Weiru Liu;Jun Hong
: This paper presents an event modelling and reasoning framework where event-observations obtained from het-erogeneous sources may be uncertain or incomplete, while sensors may be unreliable or in conflict. To address these issues we apply Dempster-Shafer (DS) theory to correctly model the event-observations so that they can be combined in a consistent way. Unfortunately, existing frameworks do not specify which event-observations should be selected to combine. Our framework provides a rule-based approach to ensure combination occurs on event-observations from multiple sources corresponding to the same event of an individual subject. In ad-dition, our framework provides an inference rule set to infer higher level inferred events by reasoning over the uncertain event-observations as epistemic states using a formal language. Finally, we illustrate the usefulness of the framework using a sensor-based surveillance scenario.