Ensembles of Radial Basis Function Networks for Spectroscopic Detection of Cervical Pre-Cancer

Details Ensembles of Radial Basis Function Networks for Spectroscopic Detection of Cervical Pre-Cancer Ensembles of Radial Basis Function Networks for Spectroscopic Detection of Cervical Pre-Cancer

1999-05-20

arxiv.org/abs/cs/9905011v1

IEEE Transactions on Biomedical Engineering, vol 45, no. 8, pp 953-962, 1998

Computer Science

Neural and Evolutionary Computing

23 pages

Scientific paper

The mortality related to cervical cancer can be substantially reduced through early detection and treatment. However, current detection techniques, such as Pap smear and colposcopy, fail to achieve a concurrently high sensitivity and specificity. In vivo fluorescence spectroscopy is a technique which quickly, non-invasively and quantitatively probes the biochemical and morphological changes that occur in pre-cancerous tissue. A multivariate statistical algorithm was used to extract clinically useful information from tissue spectra acquired from 361 cervical sites from 95 patients at 337, 380 and 460 nm excitation wavelengths. The multivariate statistical analysis was also employed to reduce the number of fluorescence excitation-emission wavelength pairs required to discriminate healthy tissue samples from pre-cancerous tissue samples. The use of connectionist methods such as multi layered perceptrons, radial basis function networks, and ensembles of such networks was investigated. RBF ensemble algorithms based on fluorescence spectra potentially provide automated, and near real-time implementation of pre-cancer detection in the hands of non-experts. The results are more reliable, direct and accurate than those achieved by either human experts or multivariate statistical algorithms.

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