Guest editorial

Ackland, 1985, Cadre — A System of Cooperating VLSI Design Experts, 99 Erman, 1976, The Hearsay-II System in Speech Understanding Systems, 6 Forgy, 1981, OPS5 User's Manual, 10.21236/ADA106558 Georgeff, 1982, Procedural Control in Production Systems, Artificial Intelligence 18, 2, 175, 10.1016/0004-3702(82)90039-X Nii, 1982, Signal-to-Symbol Transformation: HASP/SIAP Case Study, The AI Magazine, 23 Nii, 1986, Blackboard Systems: The Blackboard Model of Problem Solving and the Evolution of Blackboard Architectures, The AI Magazine 7, 2, 38