نتایج جستجو برای: aggregation operator

تعداد نتایج: 158285  

Journal: :European Journal of Operational Research 2003
Wlodzimierz Ogryczak Tomasz Sliwinski

The problem of aggregating multiple criteria to form overall objective functions is of considerable importance in many disciplines. The most commonly used aggregation is based on the weighted sum. The ordered weighted averaging (OWA) aggregation, introduced by Yager, uses the weights assigned to the ordered values (i.e. to the worst value, the second worst and so on) rather than to the specific...

Journal: :J. Applied Mathematics 2013
Xiaowen Qi Changyong Liang Jun-ling Zhang

We investigate multiple attribute group decision making (MAGDM) problems with arguments taking the form of interval-valued intuitionistic fuzzy numbers. In order to relieve influence of unfair arguments, a Gaussian distribution-based argument-dependent weighting method and a hybrid support-function-based argument-dependent weighting method are devised by, respectively, measuring support degrees...

2012
Bonifacio Llamazares

Weighted means and ordered weighted averaging (OWA) operators are well-known functions widely used in aggregation processes. Although both are defined through weighting vectors, their behavior is quite different: The weighted means allow to weight each information source in relation to their reliability while OWA operators allow to weight the values according to their ordering. Nevertheless, th...

2009
Chris Cornelis Patricia Victor Enrique Herrera-Viedma

In this paper, we focus on the aggregation problem for (trust, distrust) couples in trust networks. In particular, we study approaches based on classical and induced ordered weighted averaging (OWA) operators.

Journal: :European Journal of Operational Research 2007
Rehan Sadiq Solomon Tesfamariam

This paper explores the application of ordered weighted averaging (OWA) operators to develop water quality index, which incorporates an attitudinal dimension in the aggregation process. The major thrust behind selecting the OWA operator for aggregation of multi-criteria decision-making is its capability to encompass a range of operators bounded between minimum and maximum. A new approach for ge...

Journal: :Computers & Industrial Engineering 2009
Yung-Chia Chang Kuei-Hu Chang Cheng-Shih Liaw

Reliability allocation is one of the most important factors to consider when determining the reliability and competitiveness of a product. The feasibility-of-objectives (FOO) technique has become the current standard for assessing reliability designs for military mechanical–electrical systems, whereas the average weighting allocation method is widely used for commercial applications. However, a...

Journal: :Int. J. Approx. Reasoning 2009
Wlodzimierz Ogryczak Tomasz Sliwinski

The problem of averaging outcomes under several scenarios to form overall objective functions is of considerable importance in decision support under uncertainty. The so-called Weighted OWA (WOWA) aggregation offers a well-suited approach to this problem. The WOWA aggregation, similar to the classical ordered weighted averaging (OWA), uses the preferential weights assigned to the ordered values...

2008
Sri Kusumadewi Sri Hartati

This research is aimed to build a Clinical Group Decision Support System model that is used to diagnose the mental disorder. This model makes use of the experts’ competence to give their preferences for some features related with the kinds of mental disorder. The knowledge base is built based on those preferences through preference aggregation process using Fuzzy MultiAttribute Decision Making ...

Journal: :J. Applied Mathematics 2012
Jun-ling Zhang Xiaowen Qi

Two induced aggregation operators with novelly designed TOPSIS order-inducing variables are proposed: Induced Interval-valued Intuitionistic Fuzzy Hybrid Averaging I-IIFHA operator and Induced Interval-valued Intuitionistic Fuzzy Hybrid Geometric I-IIFHG operator. The merit of two aggregation operators is that they can consider additional preference information of decision maker’s attitudinal c...

2014
Zhihong Ma Jianping Chen Shouzhen Zeng

In this paper we introduce a new fuzzy decision making model that unifies induced aggregation operators and distance measures in the same formulation. We develop the fuzzy induced generalized ordered weighted averaging distance (FIGOWAD) operator. The main advantage of this operator is that it provides a parameterized family of aggregation operators between the minimum and the maximum and a wid...

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