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CHARACTERISTICS OF BACKPROPAGATION NEURAL NETWORKS EMPLOYED IN THE IDENTIFICATION OF NEUROTRANSMITTER RAMAN-SPECTRA

TitleCHARACTERISTICS OF BACKPROPAGATION NEURAL NETWORKS EMPLOYED IN THE IDENTIFICATION OF NEUROTRANSMITTER RAMAN-SPECTRA
Publication TypeJournal Article
Year of Publication1994
AuthorsSchulze, HG, Blades, MW, Bree, AV, Gorzalka, BB, Greek, LS, Turner, RFB
JournalApplied Spectroscopy
Volume48
Pagination50-57
Date PublishedJan
Type of ArticleArticle
ISBN Number0003-7028
Keywordsartificial neural networks, BACKPROPAGATION NETWORKS, DISCRIMINATION, GENERALIZATION, NEUROTRANSMITTERS, RAMAN SPECTRA, SPECTROSCOPY, TRANSFER FUNCTION, UV RESONANCE RAMAN
Abstract

We have shown that neural networks are capable of accurately identifying the Raman spectra of aqueous solutions of small-molecule neurotransmitters. It was found that the networks performed optimally when the ratio of the number of hidden nodes to the number of input nodes was 0.16, that network accuracy increased with the number of input layer nodes, and that input features influenced the abilities of networks to discriminate or generalize between spectra. Furthermore, networks employing sine transfer functions for their hidden layers trained faster and were better at discriminating between closely related spectra, but they were less tolerant of spectral distortions than the networks using sigmoid transfer functions. The latter type of network produced superior results where generalization between spectra was required.

URL<Go to ISI>://A1994MU52400011