Title :
Clus-DOWA: A new dependent OWA operator
Author :
Boongoen, Tossapon ; Shen, Qiang
Author_Institution :
Dept. of Comput. Sci., Aberystwyth Univ., Aberystwyth
Abstract :
Aggregation operators are crucial to integrating diverse decision makerspsila opinion. While minimum and maximum can represent optimistic and pessimistic extremes, an ordered weighted aggregation (OWA) operator is able to reflect varied human attitudes lying between the two using distinct weight vectors. Several weight determination techniques ignore characteristics of data being aggregated. In contrary, data-oriented operators like centered OWA and dependent OWA utilize the centralized data structure to generate reliable weights. Values near the center of a group receive higher weights than those further away. Despite its general applicability, this perspective entirely neglects any local data structures representing strong agreements or consensus. This paper presents a new dependent OWA operator (Clus-DOWA) that applies distributed structure of data or data clusters to determine its weight vector. The reliability of weights created by DOWA and Clus-DOWA operators are experimentally compared in the tasks of classification and unsupervised feature selection.
Keywords :
data structures; fuzzy set theory; information analysis; aggregation operators; data-oriented operators; distinct weight vectors; local data structures; ordered weighted aggregation operator; weight determination techniques; weights reliability; Aggregates; Arithmetic; Computer science; Data structures; Decision making; Fusion power generation; Fuzzy systems; Gaussian distribution; Humans; Open wireless architecture;
Conference_Titel :
Fuzzy Systems, 2008. FUZZ-IEEE 2008. (IEEE World Congress on Computational Intelligence). IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-1818-3
Electronic_ISBN :
1098-7584
DOI :
10.1109/FUZZY.2008.4630500