Search Results for author: Renato Cordeiro de Amorim

Found 7 papers, 0 papers with code

Identifying meaningful clusters in malware data

no code implementations31 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.

Clustering

An efficient density-based clustering algorithm using reverse nearest neighbour

no code implementations19 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.

Clustering

A-Ward_p\b{eta}: Effective hierarchical clustering using the Minkowski metric and a fast k -means initialisation

no code implementations3 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.

Clustering

Recovering the number of clusters in data sets with noise features using feature rescaling factors

no code implementations22 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.

Clustering

A survey on feature weighting based K-Means algorithms

no code implementations22 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.

Clustering

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