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Date: Monday, 25-Nov-96 22:58:59 GMTServer: NCSA/1.3MIME-version: 1.0Content-type: text/html<!-- This is a template for the personal home pages of our faculty --><!-- members. Of course, customization is welcome. --><!-- No special characters are needed for you except p. This creates --><!-- a new paragraph between main threads of thought. Otherwise, --><!-- type normally between the dotted lines. --><TITLE> Dr. Robert Hyatt's home page </TITLE><BODY><!WA0><IMG SRC = "http://www.cis.uab.edu/info/faculty/hyatt/hyatt.gif" ALIGN = TOP> <BR><BR><H1> Robert Hyatt </H1><H2> Associate Professor </H2> <BR><H2> Schedule </H2>Available via hyatt@cis.uab.edu for questions nearly 24 hoursdaily, on ICC and/or chess.net (or other servers) when you see"hyatt" logged on.<!-- list the dates you will be unavailable here --><!-- ------------------------------------------------ --><!-- ------------------------------------------------ --><P><H2> Research Interests </H2><!-- Add your research blurb between the dotted lines --><!-- ------------------------------------------------ --><H3> Computer Chess (Crafty)</H3>This research is developing the computer chess program "Crafty", whichis a direct descendent of Cray Blitz, the World Computer Champion from1983 to 1989. This program is a "freeware" package available fromftp.cis.uab.edu/pub/hyatt. Crafty is based on the classic BITMAPapproach to representing the chess board, but uses a unique methodologycalled "rotated bitmaps" to significantly improve the performance of thechess engine. This program is currently searching around 80,000 nodesper second on a P6/200 processor, and is playing on ICC and chess.netregularly. Its current ICC ratings are 2610 (bullet), 2750 (blitz) and2533 (standard). Crafty is portable, and uses xboard/winboard as a GUIunder the appropriate operating systems.<BR><BR>The current work is concentrated in three areas:<UL><LI> using parallel machines to search deeper into the game tree,<LI> inproving the chess knowledge contained in the program so that it playsbetter positional chess and also so that its strategy is goal-orientedrather than random, and<LI> improving the search strategies so that the program analyzes deeper inthose positions that require it without wasting time on deep searches for thosepositions that do not need it.</UL><P><H3> Parallel Architectures and Software </H3>This research studies various parallel machine architectures and how they canbest be used to improve the speed of software applications. These architecturespose different problems that must be addressed when developing parallel algorithms for them. Various types of parallel systems are being studied,including shared memory systems, distributed systems, and a distributedgroup of shared memory multiprocessors. Research into this last group isbeing supported by Cray Research in order to learn how to use multiple CrayXMP and YMP computer systems to solve a single problem. Algorithm design,debugging, and performance analysis of parallel algorithms are being studiedin order to inprove the execution speed of parallel code. This research hasproduced "Tuple-Space", a distributed processing programming environment thatgreatly simplifies the programming effort required to distribute an application. This system is continually being revised as it is used in various research projects.<!-- ------------------------------------------------ --><P><H2> Education </H2><!-- ------------------------------------------------ -->BS, University of Southern Mississippi, 1970.<BR>MS, University of Southern Mississippi, 1983.<BR>Ph.D., University of Alabama at Birmingham, 1988.<BR><!-- ------------------------------------------------ --><P><H2> Selected Publications </H2><!-- list publications here --><!-- ------------------------------------------------ -->1. Lewis I. Patterson, Robert M. Hyatt, Richard S. Turner,Kevin D. Reilly, "Development of a Crash-Tolerant Tuple-Space",presented at the FSU/SCRI Cluster Computing Workshop, availablevia anonymous FTP from SCRI (SCRI hosts this workshop annually anddistributes the proceedings via anonymous FTP.)<BR><BR>2. Robert M. Hyatt, Lewis I. Patterson, Richard S. Turner, Kevin D.Reilly, "Tuple-Space - Future Research Plans", presented at the FSU/SCRI Cluster Computing Workshop, available via anonymous FTP from SCRI.<BR><BR>3. Robert M. Hyatt, Richard S. Turner, Lewis I. Patterson, Kevin D.Reilly, "Distributed Discrete Event Simulation - Design, Implementationand Use," Proceedings of SimTec '92, (159-165).<BR><BR>4. Robert M. Hyatt and Harry L. Nelson, "Chess and Supercomputers,details on optimizing Cray Blitz", proceedings of Supercomputing '90in New York (354-363).<BR><BR>5. Robert M. Hyatt, Harry L. Nelson, Albert E. Gower, "Cray Blitz", inComputers, Chess, and Cognition , Springer-Verlag, 1990, (111-130).<BR><BR>6. Robert M. Hyatt, Bruce W. Suter, and Harry Nelson, "A ParallelAlpha/Beta Tree Searching Al", Parallel Computing 10 (1989) (299-308).<BR><BR>7. Robert M. Hyatt, "A High-Performance Parallel Algorithm to SearchDepth-First Game Trees," Ph.D. Dissertation, University of Alabama atBirmingham, 1988.<BR><BR>8. Harry Nelson and Robert M. Hyatt, "The Cray Blitz Draw Heuristic",Journal of the International Computer Chess Association (ICCA)". vol 11,number 1, March 1988 (3-9)<BR><BR>9. R. Hyatt, H. Nelson, A. Gower, "Cray Blitz - 1984 Chess Champion",Telematics and Informatics (2) (4), Pergammon Press Ltd. (1986) (299-305).<BR><BR>10. Hyatt, R.M., Gower, A.E., Nelson, H.L., "Cray Blitz", Advances inComputer Chess 4, Pergammon Press, 1985 (89-106).<!-- ------------------------------------------------ --></BODY>⌨️ 快捷键说明
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