Preface to special issue on Knowledge Engineering for Planning and Scheduling

ROMAN BARTÁK, SIMONE FRATINI and THOMAS LEO MCCLUSKEY Faculty of Mathematics and Physics, Department of Theoretical Computer Science and Mathematical Logic, Charles University in Prague, Malostranské nám. 25, 118 00 Praha 1, Czech Republic; e-mail: bartak@ktiml.mff.cuni.cz; Institute of Cognitive Science and Technology of the Italian National Research Council, Via S. Martino della Battaglia 44, I-00185 Rome, Italy; e-mail: simone.fratini@istc.cnr.it; Department of Informatics, University of Huddersfield, Huddersfield, West Yorkshire, HD1 3DH, UK; e-mail: t.l.mccluskey@hud.ac.uk