KI-99: Advances in artificial intelligence. 23rd annual German conference, Bonn, Germany, September 13--15, 1999. Proceedings (Q1819258)

The articles of mathematical interest will be reviewed individually. The preceding conference (22nd, 1998) has been indicated (see Zbl 0898.00032). Indexed articles: \textit{Mantay, Thomas; Möller, Ralf; Kaplunova, Alissa}, Computing probabilistic least common subsumers in description logics, 89-100 [Zbl 0964.68062] \textit{Billington, D.; Antoniou, G.; Governatori, G.; Maher, M.}, Revising nonmonotonic theories: The case of defeasible logic, 101-112 [Zbl 0957.03017] \textit{Nutt, Werner}, On the translation of qualitative spatial reasoning problems into modal logics, 113-124 [Zbl 0964.68129] \textit{Kern-Isberner, Gabriele}, Following conditional structures of knowledge, 125-136 [Zbl 0961.03018] \textit{Thielscher, Michael}, A theory of first-order counterfactual reasoning, 137-148 [Zbl 0957.03034] \textit{Schwind, Camilla}, A theory for causal reasoning, 285-288 [Zbl 0964.68127]