no code implementations • 1 Dec 2020 • Renato Cordeiro de Amorim, Vladimir Makarenkov
The data preprocessing stage is crucial in clustering.
no code implementations • 31 Jul 2020 • Renato Cordeiro de Amorim, Carlos David Lopez Ruiz
It does not favour more meaningful features over those that are less meaningful, an effect one should perhaps expect of the data pre-processing stage.
no code implementations • 19 Nov 2018 • Stiphen Chowdhury, Renato Cordeiro de Amorim
We also show that it is possible to estimate a good value for this parameter using a clustering validity index.
no code implementations • 3 Nov 2016 • Renato Cordeiro de Amorim, Vladimir Makarenkov, Boris Mirkin
This allows the cluster merging process to start from this partition rather than from a trivial partition composed solely of singletons.
no code implementations • 22 Feb 2016 • Renato Cordeiro de Amorim, Christian Hennig
In this paper we introduce three methods for re-scaling data sets aiming at improving the likelihood of clustering validity indexes to return the true number of spherical Gaussian clusters with additional noise features.
no code implementations • 22 Sep 2015 • Renato Cordeiro de Amorim
In a real-world data set there is always the possibility, rather high in our opinion, that different features may have different degrees of relevance.