Pointwise construction of Lippschitz aggregation operators with specific properties
Beliakov, Gleb, Calvo, Tomasa and Lazaro, Jesus 2007, Pointwise construction of Lippschitz aggregation operators with specific properties, International journal of uncertainty, fuzziness, and knowledge-based systems., vol. 15, no. 2, pp. 193-223.
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This paper describes an approach to pointwise construction of general aggregation operators, based on monotone Lipschitz approximation. The aggregation operators are constructed from a set of desired values at certain points, or from empirically collected data. It establishes tight upper and lower bounds on Lipschitz aggregation operators with a number of different properties, as well as the optimal aggregation operator, consistent with the given values. We consider conjunctive, disjunctive and idempotent n-ary aggregation operators; p-stable aggregation operators; various choices of the neutral element and annihilator; diagonal, opposite diagonal and marginal sections; bipolar and double aggregation operators. In all cases we provide either explicit formulas or deterministic numerical procedures to determine the bounds. The findings of this paper are useful for construction of aggregation operators with specified properties, especially using interpolation schemata.
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