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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of optimization theory and applications 92 (1997), S. 225-248 
    ISSN: 1573-2878
    Keywords: Managerial strategies ; qualitative information ; quantitative predictions ; fuzzy controller ; market penetration ; nonuniform influence parameter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Managerial strategies, especially at the higher echelons of management, are often linguistically stated. This is because they need to be based on information which often defies quantification. Such verbal strategies and qualitative information have often been found to be difficult to incorporate in quantitative models. Thus, the quantitative effects of implementing one strategy as opposed to another have generally been difficult to forecast. In this paper, we show that, through the use of fuzzy logic, we can incorporate such qualitative (linguistically stated) information. Furthermore, we show that a fuzzy controller can be designed so as to reach desired goals while being cognizant of linguistically stated strategies, scenarios, and decision rules as well as quantitative data types. The approach is applied to the modeling and control of market penetration, a field which has attracted considerable attention in recent years.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of optimization theory and applications 94 (1997), S. 23-28 
    ISSN: 1573-2878
    Keywords: Moore–Penrose inverse ; simple proof for recursive relation ; Greville formula
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A simple proof of the Greville formula for the recursive computation of the Moore–Penrose (MP) inverse of a matrix is presented. The proof utilizes no more than the elementary properties of the MP inverse.
    Type of Medium: Electronic Resource
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