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Risk Allocation for Temporal Risk Assessment

dc.date.accessioned2018-01-31T00:01:19Z
dc.date.accessioned2018-11-26T22:27:49Z
dc.date.available2018-01-31T00:01:19Z
dc.date.available2018-11-26T22:27:49Z
dc.date.issued2013-01-31
dc.identifier.urihttp://hdl.handle.net/1721.1/113371
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/1721.1/113371
dc.descriptionMEng thesisen_US
dc.description.abstractTemporal uncertainty arises when performing any activity in the natural world. When activities are composed into temporal plans, then, there is a risk of not meeting the plan requirements. Currently, we do not have quantitatively precise methods for assessing temporal risk of a plan. Existing methods that deal with temporal uncertainty either forgo probabilistic models or try to optimize a single objective, rather than satisfy multiple objectives. This thesis offers a method for evaluating whether a schedule exists that meets a set of temporal constraints, with acceptable risk of failure. Our key insight is to assume a form of risk allocation to each source of temporal uncertainty in our plan, such that we may reformulate the probabilistic plan into an STNU parameterized on the risk allocation. We show that the problem becomes a deterministic one of finding a risk allocation which implies a schedulable STNU within acceptable risk. By leveraging the principles behind STNU analysis, we derive conditions which encode this problem as a convex feasibility program over risk allocations. Furthermore, these conditions may be learned incrementally as temporal conflicts. Thus, to boost computational efficiency, we employ a generate-and-test approach to determine whether a schedule may be found.en_US
dc.format.extent64 p.en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleRisk Allocation for Temporal Risk Assessmenten_US


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Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International