International Journal of Image, Graphics and Signal Processing (IJIGSP)
IJIGSP Vol. 10, No. 2, 8 Feb. 2018
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Classification of Masses in Digital Mammograms Using Firefly based Optimization
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Author(s)
Index Terms
Firefly algorithm, artificial neural network, support vector machine, receiver operating characteristics curve, digital mammography, feature selection, classification
Abstract
Breast cancer is one of the leading causes of death in women all over the world. Computer based diagnosis system assists radiologist in the effective treatment of breast cancer. To design an efficient classification system for masses in digital mammograms, we have to use efficient algorithms for feature selection to reduce the feature space of mammogram classification problem. The proposed study explores the use of Firefly algorithm to select a subset of features. Artificial neural network and support vector machine classifiers are employed to evaluate fitness of the selected features. Features selected by Firefly algorithm are used to classify masses into benign and malignant, using artificial neural network and support vector machine classifiers. The proposed method employed over 651 mammograms obtained from the Database of Digitized Screen-film Mammograms. Classification results show that Firefly algorithm with artificial neural network is superior to Firefly algorithm with support vector machine. Artificial neural network achieves accuracy of 95.23% with 94.43% sensitivity, 93.94% specificity and area under curve Az=0.965±0.008. On the other hand, support vector machine classifier achieves an accuracy of 92.47% with 96.14% sensitivity, 88.53% specificity and area under curve Az=0.951±0.009.Results obtained with Firefly algorithm shows that it will be useful for effective treatment of breast cancer.
Cite This Paper
Shankar Thawkar, Ranjana Ingolikar," Classification of Masses in Digital Mammograms Using Firefly based Optimization", International Journal of Image, Graphics and Signal Processing(IJIGSP), Vol.10, No.2, pp. 25-33, 2018. DOI: 10.5815/ijigsp.2018.02.03
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