@INPROCEEDINGS{Gottfried2004,
  author = {Gottfried, Bj{\"o}rn},
  title = {{Singularities in Qualitative Reasoning}},
  booktitle = {AISC 2004, Artificial Intelligence and Symbolic Computation},
  year = {2004},
  editor = {Buchberger, Bruno and Campbell, John A.},
  number = {3249},
  series = {LNCS 3249},
  pages = {276--280},
  address = {Linz, Austria},
  month = {September22--24},
  publisher = {Springer},
  abstract = {Qualitative Reasoning is characterised by making knowledge explicit
	in order to arrive at efficient reasoning techniques. It contrasts
	with often intractable quantitative models. Whereas quantitative
	models require computations on continuous spaces, qualitative models
	work on discrete spaces. A problem arises in discrete spaces concerning
	transitions between neighbouring qualitative concepts. A given arrangement
	of objects may comprise relations which correspond to such transitions,
	e.g. an object may be neither left of nor right of another object
	but precisely aligned with it. Such singularities are sometimes undesirable
	and influence underlying reasoning mechanisms. We shall show how
	to deal with singular relations in a way that is more closely related
	to commonsense reasoning than treating singularities as basic qualitative
	concepts.},
  doi = {10.1007/b100361},
  isbn = {978-3-540-23212-4},
  owner = {pmania},
  timestamp = {2012.11.06},
  url = {http://www.tzi.de/~bjoerng/Gottfried2004b.pdf}
}