Breast density classification for cancer detection using DCT-PCA feature extraction and classifier ensemble
- Authors: Haque, Md Sarwar , Hassan, Md Rafiul , BinMakhashen, Galal , Owaidh, Abdullah , Kamruzzaman, Joarder
- Date: 2018
- Type: Text , Conference proceedings
- Relation: 17th International Conference on Intelligent Systems Design and Applications, ISDA 2017; Delhi, India; 14th-16th December 2017; published in Intelligent Systems Design and Applications (part of the Advances in Intelligent Systems and Computing book series) Vol. 736, p. 702-711
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- Description: It is well known that breast density in mammograms may hinder the accuracy of diagnosis of breast cancer. Although the dense breasts should be processed in a special manner, most of the research has treated dense breast almost the same as fatty. Consequently, the dense tissues in the breast are diagnosed as a developed cancer. In contrast, dense-fatty should be clearly distinguished before the diagnosis of cancerous or not cancerous breast. In this paper, we develop such a system that will automatically analyze mammograms and identify significant features. For feature extraction, we develop a novel system by combining a two-dimensional discrete cosine transform (2D-DCT) and a principal component analysis (PCA) to extract a minimal feature set of mammograms to differentiate breast density. These features are fed to three classifiers: Backpropagation Multilayer Perceptron (MLP), Support Vector Machine (SVM) and K Nearest Neighbour (KNN). A majority voting on the outputs of different machine learning tools is also investigated to enhance the classification performance. The results show that features extracted using a combination of DCT-PCA provide a very high classification performance while using a majority voting of classifiers outputs from MLP, SVM, and KNN.
Enhancing branch predictors using genetic algorithm
- Authors: Haque, Md Sarwar , Hassan, Md Rafiul , Sulaiman, Muhammad , Onoruoiza, Salami , Kamruzzaman, Joarder , Arifuzzaman, Md
- Date: 2019
- Type: Text , Conference proceedings , Conference paper
- Relation: 8th International Conference on Modeling Simulation and Applied Optimization, ICMSAO 2019
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- Description: Dynamic branch prediction is a hardware technique used to speculate the direction of control branches. Inaccurate prediction will make all speculative works useless while accurate prediction will significantly improve microprocessors performance. In this work, we have shown that Genetic Algorithm (GA) can be used to select (near) optimal parameters for branch predictors in most cases. The GA-enhanced predictors take time to find suitable parameters, but once the values of these parameters are determined, the GA-enhanced predictors take the same time to execute as the basic predictors with increased accuracy. © 2019 IEEE.
- Description: E1