@inproceedings{ Ferrein:Schiffer:Lakemeyer:2008:ICIRA:Fuzzy,
  author      = "Alexander Ferrein and Stefan Schiffer and Gerhard Lakemeyer",
  affiliation = "RWTH Aachen University, Germany",
  title       = "A Fuzzy Logic Semantics for Qualitative Fluents in the Situation Calculus",
  booktitle   = "Proceedings of the International Conference on Intelligent Robotics and Applications (ICIRA'08)",
  pages       = "498--509",
  year        = "2008",
  month       = "October 15-17",
  location    = "Wuhan, China",
  publisher   = "Springer",
  series      = "LNCS",
  number      = "",
  isbn        = {978-3-540-88512-2},
  ee          = {http://dx.doi.org/10.1007/978-3-540-88513-9_54},
  abstract    = " Specifying the behavior of an intelligent autonomous
                  robot or agent is a non-trivial task. The question
                  is: how can the knowledge of the domain expert be
                  encoded in the agent program?  Qualitative
                  representations in general facilitate to express the
                  knowledge of a domain expert. In this paper, we
                  propose a semantics for qualitative fluents in the
                  situation calculus. Our semantics is based on fuzzy
                  sets. Membership functions define to which degree a
                  qualitative fluent belongs to a particular category.
                  Especially intriguing about a fuzzy logic semantic
                  for qualitative fluents is that the qualitative
                  ranges may overlap, and a value can, at the same
                  time, fall into several categories.",
}

@inproceedings{DBLP:conf/icira/FerreinSL08,
  author    = {Alexander Ferrein and
               Stefan Schiffer and
               Gerhard Lakemeyer},
  title     = {A Fuzzy Set Semantics for Qualitative Fluents in the Situation
               Calculus},
  booktitle = {ICIRA (1)},
  year      = {2008},
  pages     = {498-509},
  ee        = {http://dx.doi.org/10.1007/978-3-540-88513-9_54},
  crossref  = {DBLP:conf/icira/2008-1},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/icira/2008-1,
  editor    = {Caihua Xiong and
               Honghai Liu and
               Yongan Huang and
               Youlun Xiong},
  title     = {Intelligent Robotics and Applications, First International
               Conference, ICIRA 2008, Wuhan, China, October 15-17, 2008
               Proceedings, Part I},
  booktitle = {ICIRA (1)},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {5314},
  year      = {2008},
  isbn      = {978-3-540-88512-2},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}