28 May 2013 Reasoning with uncertain information and trust
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A limitation of standard Description Logics is its inability to reason with uncertain and vague knowledge. Although probabilistic and fuzzy extensions of DLs exist, which provide an explicit representation of uncertainty, they do not provide an explicit means for reasoning about second order uncertainty. Dempster-Shafer theory of evidence (DST) overcomes this weakness and provides means to fuse and reason about uncertain information. In this paper, we combine DL-Lite with DST to allow scalable reasoning over uncertain semantic knowledge bases. Furthermore, our formalism allows for the detection of conflicts between the fused information and domain constraints. Finally, we propose methods to resolve such conflicts through trust revision by exploiting evidence regarding the information sources. The effectiveness of the proposed approaches is shown through simulations under various settings.
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Murat Sensoy, Murat Sensoy, Geeth de Mel, Geeth de Mel, Achille Fokoue, Achille Fokoue, Timothy J. Norman, Timothy J. Norman, Jeff Z. Pan, Jeff Z. Pan, Yuqing Tang, Yuqing Tang, Nir Oren, Nir Oren, Katia Sycara, Katia Sycara, Lance Kaplan, Lance Kaplan, Tien Pham, Tien Pham, "Reasoning with uncertain information and trust", Proc. SPIE 8758, Next-Generation Analyst, 87580C (28 May 2013); doi: 10.1117/12.2015667; https://doi.org/10.1117/12.2015667

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