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Using neural networks to select wavelet features for breast cancer diagnosis

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8 Author(s)
Kocur, C.M. ; Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA ; Rogers, S.K. ; Myers, L.R. ; Burns, T.
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This study focuses on improving microcalcification classification by establishing an efficient computer-aided diagnosis system that extracts Daubechies-4 and biorthogonal wavelet features. These wavelets were chosen because they have been used in military target recognition and fingerprint recognition research with images characterized by low contrast, similar to mammography. Feature selection techniques are employed to further increase classification performance. The artificial neural network feature selection techniques are complemented by a conventional decision boundary-based feature selection method. The results using the wavelet features are compared to more conventional measures of image texture, angular second moment, and Karhunen Loeve coefficients. The use of alternative signal processing to compare wavelet and neural techniques allows for a measure of the problem difficulty. It is concluded that advances and contributions have been made with the introduction of two novel feature extraction methods for breast cancer diagnosis, wavelets and eigenmasses. Additionally, feature selection techniques are demonstrated, compared, and validated, transforming adequate discrimination power into promising classification results

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Engineering in Medicine and Biology Magazine, IEEE  (Volume:15 ,  Issue: 3 )