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Blind signal extraction, a hot issue in the field of communication signal processing, aims to retrieve the sources through the optimization of contrast functions. Many contrasts based on higher-order statistics such as kurtosis, usually behave sensitive to outliers. Thus, to achieve robust results, nonlinear functions are utilized as contrasts to approximate the negentropy criterion, which is a...

Piero Quarati 1,2,*, Marcello Lissia 1 and Antonio M. Scarfone 3,4 1 Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Cagliari, Monserrato 09042, Italy; [email protected] 2 Dipartimento di Scienza Applicata e Tecnologia (SCUDO)-Politecnico di Torino, Torino 10129, Italy 3 Istituto dei Sistemi Complessi (ISC-CNR) c/o Politecnico di Torino, Torino 10129, Italy; antoniomaria.scarfo...

The aim of a crisp cluster validity index is to quantify the quality of a given data partition. It allows to select the best partition out of a set of potential ones, and to determine the number of clusters. Recently, negentropy-based cluster validation has been introduced. This new approach seems to perform better than other state of the art techniques, and its computation is quite simple. How...