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      Ensembles of Probabilistic Principal Surfaces and Competitive Evolution on Data: two different approaches to data classification

      proceedings-article

      1 , 2 , 1 , 2 , 3 , 4 , 1 , 4 , 5 , 1 , 4 , 2 , 2 , 2 , 4

      ADA-III - Astronomical Data Analysis III Conference (ADA)

      Astronomical Data Analysis

      29 April - 1 May 2004

      neural networks, genetic algorithms, data mining, visualization

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            Abstract

            Probabilistic Principal Surfaces ( PPS ) offer very powerful visualization and classification capabilities and overcome most of the shortcomings of other neural tools such as SOM, GTM, etc. More specifically PPS build a probability density function of a given data set of patterns lying in a D-dimensional space (with D >> 3) which can be expressed in terms of a limited number of latent variables laying in a Q-dimensional space (Q is usually 2-3) which can be used to visualize the data in the latent space. PPS may also be arranged in ensembles to tackle very complex classification tasks. Competitive Evolution on Data ( CED ) is instead an evolutionary system in which the possible solutions (cluster centroids) compete to conquer the largest possible number of resources (data) and thus partition the input data set in clusters. We discuss the application of Spherical– PPS to two data sets coming, respectively, from astronomy (Great Observatory Origins Deep Survey) and from genetics (microarray data from yeast genoma) and of CED to the genetics data only.

            Content

            Author and article information

            Contributors
            Conference
            April 2004
            April 2004
            : 1-12
            Affiliations
            [1 ]Department of Physical Sciences, University Federico II of Napoli, via Cinthia 6, ITALY
            [2 ]Department of Mathematics and Informatics, University of Salerno, Fisciano - ITALY
            [3 ]Department of Mathematics and Applications, University Federico II of Napoli, via Cinthia 6, ITALY
            [4 ]INFN - Italian Institure of Nuclear Physics Unit of Naples, via Cinthia 6, Italy
            [5 ]INAF - Italian Institute for Astrophysics, via Moiariello 16, Napoli, ITALY
            Article
            10.14236/ewic/ADA-III2004.20
            327ca79d-89bf-41f6-a061-4669b98d2b5d
            © Roberto Amato et al. Published by BCS Learning and Development Ltd. ADA-III - Astronomical Data Analysis III Conference, Sant' Agata sui due Golfi, Italy

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

            ADA-III - Astronomical Data Analysis III Conference
            ADA
            3
            Sant' Agata sui due Golfi, Italy
            29 April - 1 May 2004
            Electronic Workshops in Computing (eWiC)
            Astronomical Data Analysis
            Product
            Product Information: 1477-9358BCS Learning & Development
            Self URI (journal page): https://ewic.bcs.org/
            Categories
            Electronic Workshops in Computing

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