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Feature Selection for Computer-Aided Polyp Detection using Genetic Algorithms

机译:使用遗传算法的计算机辅助息肉检测的特征选择

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To improve computer aided diagnosis (CAD) for CT colonography we designed a hybrid classification scheme that uses a committee of support vector machines (SVMs) combined with a genetic algorithm (GA) for variable selection. The genetic algorithm selects subsets of four features, which are later combined to form a committee, with majority vote for classification across the base classifiers. Cross validation was used to predict the accuracy (sensitivity, specificity, and combined accuracy) of each base classifier SVM. As a comparison for GA, we analyzed a popular approach to feature selection called forward stepwise search (FSS). We conclude that genetic algorithms are effective in comparison to the forward search procedure when used in conjunction with a committee of support vector machine classifiers for the purpose of colonic polyp identification.
机译:为了改善CT结肠成像的计算机辅助诊断(CAD),我们设计了一种混合分类方案,该方案使用支持向量机(SVM)委员会和遗传算法(GA)进行变量选择。遗传算法选择四个特征的子集,然后将其组合以组成一个委员会,并在基础分类器中进行多数表决。使用交叉验证来预测每个基本分类器SVM的准确性(敏感性,特异性和综合准确性)。作为GA的比较,我们分析了一种流行的特征选择方法,称为前向逐步搜索(FSS)。我们得出结论,当与支持向量机分类器委员会一起用于结肠息肉识别时,遗传算法与前向搜索程序相比是有效的。

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