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将 EBO-HSIC 与 SVM 相结合,用于选择与宫颈癌分类相关的基因。

Incorporating EBO-HSIC with SVM for Gene Selection Associated with Cervical Cancer Classification.

机构信息

Department of Information Technology, Mahendra Engineering College for Women, Tiruchengode, India.

Department of Computer Science Engineering, Kongu Engineering College, Perundurai, India.

出版信息

J Med Syst. 2018 Oct 6;42(11):225. doi: 10.1007/s10916-018-1092-5.

Abstract

Microarray technology is utilized by the biologists, in order to compute the expression levels of thousands of genes. Cervical cancer classification utilizing gene expression data depends upon conventional supervised learning methods, wherein only labeled data could be used for learning. The previous methodologies had problem with appropriate feature selection as well as accurateness of classification outcomes. So, the entire performance of the cancer classification is decreased meaningfully. With the aim of overcoming the aforesaid problems, Enhanced Bat Optimization Algorithm with Hilbert-Schmidt Independence Criterion (EBO-HSIC) and Support Vector Machine (SVM) algorithm is presented in this research for identifying the specific genes from the gene expression dataset that belongs to cancer microarray. This proposed system contains phases of instance normalization, module detection, gene selection and classification. By Fuzzy C Means (FCM) algorithm, the normalization is performed for eliminating the inappropriate features from the gene dataset. Meanwhile, for effective feature selection, the EBO algorithm is used for producing more appropriate features via improved objective function values. For determining a subset of the most informative genes utilizing a rapid as well as scalable bat algorithm, this proposed method focuses on measuring the dependence amid Differentially Expressed Genes (DEGs) as well as the gene significance. The algorithm is dependent upon the HSIC and was partially enthused by EBO. With the help of SVM classifier, these gene features are categorized very precisely. Experimentation outcomes demonstrate that the presented EBO with SVM algorithm confirms a clear-cut classification performance for the given gene expression datasets. Hence the result provides higher performance by launching EBO with SVM algorithm to obtain greater accuracy, recall, precision, f-measure and less time complexity more willingly than the previous techniques.

摘要

微阵列技术被生物学家用于计算数千个基因的表达水平。利用基因表达数据对宫颈癌进行分类依赖于传统的监督学习方法,其中只能使用标记数据进行学习。以前的方法在适当的特征选择和分类结果的准确性方面存在问题。因此,癌症分类的整体性能显著降低。为了克服上述问题,本研究提出了一种基于 Hilbert-Schmidt 独立性准则(EBO-HSIC)和支持向量机(SVM)算法的增强蝙蝠优化算法(EBO),用于从基因表达数据集中识别属于癌症微阵列的特定基因。该系统包含实例归一化、模块检测、基因选择和分类四个阶段。通过模糊 C 均值(FCM)算法对基因数据集进行归一化,以消除不适当的特征。同时,为了进行有效的特征选择,EBO 算法通过改进的目标函数值来生成更合适的特征。为了利用快速可扩展的蝙蝠算法确定最具信息量的基因子集,该方法侧重于测量差异表达基因(DEGs)之间的依赖性以及基因的重要性。该算法基于 HSIC,并部分受到 EBO 的启发。利用 SVM 分类器,这些基因特征可以非常精确地进行分类。实验结果表明,所提出的 EBO 与 SVM 算法在给定的基因表达数据集上具有明确的分类性能。因此,与以前的技术相比,通过使用 EBO 与 SVM 算法可以获得更高的性能,从而获得更高的准确性、召回率、精度、F1 度量和更低的时间复杂度。

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