Maintaining timelines with hybrid fuzzy context inference

• Timelines allow to represent temporally-rich informa-tion about plans as well as the current execution statusof plans. Recent work has addressed the related issueof inferring timelines representing contextual informa-tion — often useful for informing planning and/or planexecution monitoring processes. The present article ad-dresses the particular issue of inferring context fromgiven models of how observations relate to context,and representing this context on timelines. We strive toabandon assumptions currently made on context recog-nition, namely that hypotheses are either confirmed ordisproved. We propose a technique which allows to ac-cept the inferred context on a timeline with a degree ofpossibility. The approach is based on fuzzy constraintreasoning, and captures two sources of uncertainty: un-certainty in the model that is used to infer context, anduncertainty in the observations. We also formulate theproblem of searching for the most likely timeline as aConstraint Optimization Problem.

Ämnesord

NATURVETENSKAP  -- Data- och informationsvetenskap (hsv//swe)

NATURAL SCIENCES  -- Computer and Information Sciences (hsv//eng)

Nyckelord

Fuzzy Constraint Satisfaction

Timeline based planning

Hybrid Context inference

Fuzzy temporal reasoning

Datalogi

Computer and Systems Science

Publikations- och innehållstyp

ref (ämneskategori)

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