VLSI for Artificial Intelligence and Neural Networks

This book is an edited selection of the papers presented at the International Workshop on VLSI for Artifidal Intelligence and Neural Networks which was held at the University of Oxford in September 1990. Our thanks go to all the contributors and especially to the programme committee for all their hard work. Thanks are also due to the ACM-SIGARCH, the IEEE Computer Society, and the lEE for publicizing the event and to the University of Oxford and SUNY-Binghamton for their active support. We are particularly grateful to Anna Morris, Maureen Doherty and Laura Duffy for coping with the administrative problems. Jose Delgado-Frias Will Moore April 1991 vii PROLOGUE Artificial intelligence and neural network algorithms/computing have increased in complexity as well as in the number of applications. This in tum has posed a tremendous need for a larger computational power than can be provided by conventional scalar processors which are oriented towards numeric and data manipulations. Due to the artificial intelligence requirements (symbolic manipulation, knowledge representation, non-deterministic computations and dynamic resource allocation) and neural network computing approach (non-programming and learning), a different set of constraints and demands are imposed on the computer architectures for these applications.

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Architecture and Hardware Support for AI Processing: VLSI Design of a 3D Highly Parallel MessagePassing Architecture (J.L. Bechennec et al.). Architectural Design of the Rewrite Rule Machine Ensemble (H. Aida et al.). A Dataflow Architecture for AI (J. DelgadoFrias et al.). Machines for Prolog: An Extended Prolog Instruction Set for RISC Processors (A. Krall). A VLSI Engine for Structured Logic Programming (P. Civera et al.). Performance Evaluation of a VLSI Associative Unifier in a WAM Based Environment (P. Civera et al.). Analogue and Pulse Stream Neural Networks: Computational Capabilities of BiologicallyRealistic Analog Processing Elements (C. Fields et al.). Analog VLSI Models of Mean Field Networks (C. Schneider et al.). An Analogue Neuron Suitable for a Data Frame Architecture (W.A.J. Waller et al.). Digital Implementations of Neural Networks: The VLSI Implementation of the sigma Architecture (S.R. Williams et al.). A Cascadable VLSI Architecture for the Realization of Large Binary Associative Networks (W. Poechmueller et al.). Digital VLSI Implementations of an Associative memory Based on Neural Networks (U. Rückert). Arrays for Neural Networks: A Highly Parallel Digital Architecture for Neural Network Emulation (D. Hammerstrom). 26 additional articles. Index.