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Author: search.filters.author.Benjathapanun, N.Subject: search.filters.subject.Neural network

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    Classification of UV-Vis spectroscopic data using principal component analysis and neural network techniques
    (1998-01-01)
    Benjathapanun, N.
    ;
    Boyle, W. J.O.
    ;
    Grattan, K. T.V.
    This paper presents a comparative study of the use of principal component analysis (PCA) and neural network methods to determine the nature of species present in multicomponent mixtures from ultraviolet-visible (UV-Vis) absorption spectral data. With the use of the PCA technique, absorption spectra with a 316-dimensional space are reduced to six principal components and then classified using the K nearest-neighbor method. By contrast, with the neural network technique, absorption spectra are transformed to represent the spectral shape information by binary encoding segments of the second derivative of the absorption spectra and then classifying using a back propagation neural network algorithm. It is found that the neural network method offers better performance with a higher accuracy than use of the PCA method. © 1998 Elsevier Science Ltd. All rights reserved.
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    Intelligent UV-Vis Spectrometry for Water and Environment Monitoring using GUI Software and Neural Networks
    (1996-01-01)
    Benjathapanun, N.
    ;
    Boyle, W. J.O.
    ;
    Grattan, K. T.V.
    This paper describes an Intelligent UV-Vis Spectrometry system using GUI software and neural network techniques for the identification and estimation of UV absorbing chemical species in water.