Artificial Intelligence, Volume 109

Volume 109, Numbers 1-2, 30 April 1999

• Hans Jürgen Ohlbach, Jana Koehler:
  Modal Logics, Description Logics and Arithmetic Reasoning. 1-31
  
• Gábor Rédey:
  iCTRL: Intensional Conformal Text Representation Language. 33-69
  
• Gian Aldo Antonelli:
  A Directly Cautious Theory of Defeasible Consequence for Default Logic via the Notion of General Extension. 71-109
  
• Drew V. McDermott:
  Using Regression-Match Graphs to Control Search in Planning. 111-159
  
• Richard Krajcoviech, Margaréta Kotocová:
  Non-Uniform Time Sharing in Concurrent Execution of the Constraint Solving. 161-185
  
• Robert M. Colomb:
  Representation of Propositional Expert Systems as Partial Functions. 187-209
  
• Blaz Zupan, Marko Bohanec, Janez Demsar, Ivan Bratko:
  Learning by Discovering Concept Hierarchies. 211-242
  
• Yves Deville, Olivier Barette, Pascal Van Hentenryck:
  Constraint Satisfaction over Connected Row Convex Constraints. 243-271
  
• Peter Jonsson, Thomas Drakengren, Christer Bäckström:
  Computational Complexity of Relating Time Points with Intervals. 273-295
  
• Gerhard Brewka, Thomas Eiter:
  Preferred Answer Sets for Extended Logic Programs. 297-356