By Henk G. Sol (auth.), Clyde W. Holsapple, Andrew B. Whinston (eds.)

Researchers and practitioners attracted to the present De- cision help method (DSS) and the form of destiny DSS are the meant viewers of this ebook. there's a specific, routine emphasis at the variation of man-made intelli- gence recommendations to be used within the DSS global. The chapters are geared up in significant sections, the 1st facing the- oretical issues and the second one with applications.

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Whinston © Springer-Verlag Berlin Heidelberg 1987 56 literals explicitly. The assumption that the set of all literals cannot be derived from the intensional data base is false. This theory is presented in deductive data bases and is developed and studied by Reiter [1978]. We have two major methods to answer all queries concerning these relations. First, the method 'rule interpretation' would be particularly inefficient in practice if the user query includes recursive rules. The rule interpreter deals with the deduction and the data base access at query time [Minker, 1978, 1982].

Cla. dq Clq __ l+~ In matrix form this is written S' da' + Cla' da' dq dq Clq where prime denotes transposition. This is solved to give the sensitivity mapping formula da' dq = (I _ S,)-l ~ Clq where I is the identity matrix. If this is calculated for each input attribute q, the resulting matrix of sensitivity measures is a sensitivity join. For example, in CORP we let a 2 x 10 6 . Then (E,P,V) and q const o mkup/V o -regr -mkup x E2/V o and (I - S,)-l = V2 - mkup x regr x E ( mkup x V -regr x mkup x V where r = V2 + ~ -var x regr x V2 var V2 2 mkup x var x V - mkup x E -regr x V2 V2 x V mkup x regr x var x V - mkup x regr x E.

SEQUEL 2: A Unified Approach to Data Definition, Manipulation, and Control," IBM Journal of Research and Development, ~, 6, November, pp. 560-575. , Jr. ) (1980). Decision Support Systems: Issues and Challenges, Pergamon, Oxford. , Reitman, Walter and Stohr, Edward A. ) (1982). Decision Support Systems, North-Holland, Amsterdam. Hayes-Roth, Frederick, Waterman, Donald A. and Lenat, Douglas B. ) (1983). Building Expert Systems, Addison-Wesley, Reading. Hogan, William W. (1975). "Energy Policy Models for Project Independence," Computers and Operations Research, ~, 3/4, December, pp.