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The Representation of Chemical Spectral Data for Classification

  • Diana Porro
  • Robert W. Duin
  • Isneri Talavera
  • Noslen Hdez
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5856)

Abstract

The classification of unknown samples is among the most common problems found in chemometrics. For this purpose, a proper representation of the data is very important. Nowadays, chemical spectral data are analyzed as vectors of discretized data where the variables have not connection, and other aspects of their functional nature e.g. shape differences (structural), are also ignored. In this paper, we study some advanced representations for chemical spectral datasets, and for that we make a comparison of the classification results of 4 datasets by using their traditional representation and two other: Functional Data Analysis and Dissimilarity Representation. These approaches allow taking into account the information that is missing in the traditional representation, thus better classification results can be achieved. Some suggestions are made about the more suitable dissimilarity measures to use for chemical spectral data.

Keywords

Pattern Recognition Chemometrics Classification Spectral Data Dissimilarity Representation Functional Data Analysis 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Diana Porro
    • 1
    • 2
  • Robert W. Duin
    • 2
  • Isneri Talavera
    • 1
  • Noslen Hdez
    • 1
  1. 1.Advanced Technologies Application CentreCuba
  2. 2.Pattern Recognition GroupTU DelftThe Netherlands

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