Achieving situation awareness of emergency response teams

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Presentation transcript:

Achieving situation awareness of emergency response teams Inputs to the situation awareness concept Human situation awareness: Endsley model Situation semantics: Barwise and many others Information fusion: JDL model Implementing situation awareness Ontologies for situation awareness Logical reasoning about situations and context Uncertainty reasoning

Situation Awareness Situation awareness (SAW) is “knowing what is going on around oneself.” More precisely, SAW is the perception of the elements in the environment within a volume of time and space, the comprehension of their meaning, and the projection of their status in the near future (Endsley & Garland). SAW occurs at level 2 of the JDL model.

The Joint Defense Laboratories (JDL) model is the standard for information fusion systems.

Situation semantics Situations are limited contexts for reasoning. Barwise notation: situation ⊨ infon Inference uses subsumption on situation classes: S1 => S2 Situations are themselves perceived objects. The same observations can be interpreted in different ways. One can reason about these differences.

SAW Core Ontology

The Semantic Web and Uncertainty There are many sources of uncertainty, such as measurements, unmodeled variables, and subjectivity. The Semantic Web is based on formal logic for which one can only assert facts that are unambiguously certain. The Bayesian Web is a proposal to add reasoning about certainty to the Semantic Web. The basis for the Bayesian Web is the concept of a Bayesian network.

Bibliography K. Baclawski, M. Malczewski, M. Kokar, J. Letkowski and C. Matheus. Formalization of Situation Awareness. In Eleventh OOPSLA Workshop on Behavioral Semantics, pages 1-15. (November 4, 2002) [pdf] K. Baclawski, M. Kokar, C. Matheus, J. Letkowski and M. Malczewski. Formalization of Situation Awareness. In Practical Foundations of Behavioral Semantics, H. Kilov, K. Baclawski (Ed), pages 25-40. Kluwer Academic. (2003) [pdf] C. Matheus, K. Baclawski and M. Kokar. Derivation of ontological relations using formal methods in a situation awareness scenario. In Proc. SPIE Conference on Multisensor, Multisource Information Fusion, pages 298-309. (April, 2003) C. Matheus, M. Kokar and K. Baclawski. A Core Ontology for Situation Awareness. In Proc. Sixth Intern. Conf. on Information Fusion FUSION'03, pages 545-552. (July, 2003) [pdf] M. Kokar, C. Matheus, J. Letkowski, K. Baclawski and P. Kogut. Association in Level 2 Fusion. In Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications, pages 228-237. (April, 2004) [pdf] M. Kokar, C. Matheus, K. Baclawski, J. Letkowski, M. Hinman and J. Salerno. Use Cases for Ontologies in Information Fusion. In Proc. Seventh Intern. Conf. Info. Fusion, pages 415-421. (2004) [pdf] C. Matheus, M. Kokar, K. Baclawski, J. Letkowski, C. Call, M. Hinman, J. Salerno and D. Boulware. SAWA: An Assistant for Higher-Level Fusion and Situation Awareness. In Proc. SPIE Conference on Multisensor, Multisource Information Fusion, pages 75-85. (2005) [ppt] C. Matheus, M. Kokar, K. Baclawski, J. Letkowski, C. Call, M. Hinman, J. Solerno and D. Boulware. Lessons Learned from Developing SAWA: A Situation Awareness Assistant. In Eighth Int. Conf. Info. Fusion (July 25-29, 2005) [doc] C. Matheus, K. Baclawski, M. Kokar and J. Letkowski. Using SWRL and OWL to Capture Domain Knowledge for a Situation Awareness Application Applied to a Supply Logistics Scenario. In Rules and Rule Markup Languages for the Semantic Web First International Conference, A. Adi, S. Stoutenburg (Ed), pages 130-144. Lecture Notes in Computer Science 3791:130-144. Springer-Verlag. (November 10-12, 2005) C. Matheus, M. Kokar, K. Baclawski and J. Letkowski. An Application of Semantic Web Technologies to Situation Awareness. In ISWC'05, pages 944-958. Lecture Notes in Computer Science 3729:944-958. Springer-Verlag. (2005) [ppt] M. Kokar, K. Baclawski and H. Gao. Category Theory Based Synthesis of a Higher-Level Fusion Algorithm: An Example. In Fusion'06 (2006) M. Kokar, K. Baclawski and C. Matheus. Ontology Based Situation Awareness. Information Fusion. to appear. (2006)