Aggregation functions based on penalties

Authors:
Tomasa Calvo;Gleb Beliakov
Affiliations:
Departamento de Ciencias de la Computación, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain;School of Engineering and Information Technology, Deakin University, 221 Burwood Hwy, Burwood 3125, Australia
Venue:
Fuzzy Sets and Systems
Year:
2010

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Abstract

This article studies a large class of averaging aggregation functions based on minimizing a distance from the vector of inputs, or equivalently, minimizing a penalty imposed for deviations of individual inputs from the aggregated value. We provide a systematization of various types of penalty based aggregation functions, and show how many special cases arise as the result. We show how new aggregation functions can be constructed either analytically or numerically and provide many examples. We establish connection with the maximum likelihood principle, and present tools for averaging experimental noisy data with distinct noise distributions.