A novel sequence-based prediction method for ATP-binding sites using fusion of SMOTE algorithm and random forests classifier

A novel sequence-based prediction method for ATP-binding sites using fusion of SMOTE algorithm and random forests classifier
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使用 SMOTE 算法和随机森林分类器融合的新型基于序列的 ATP 结合位点预测方法

DOI:
10.1080/13102818.2020.1840436
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发表时间:
2020-01
影响因子:
1.4
通讯作者:
Jiang Jingqing
Jiang Jingqing
中科院分区:
工程技术4区
文献类型:
--
作者:
Song Jiazhi;Liu Guixia;Song Chuyi;Jiang Jingqing

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摘要正确识别蛋白质-ATP结合位点对于蛋白质功能注释和新药开发都具有重要意义。然而,非ATP结合残基的数目远多于ATP结合残基的数目,这使得预测成为经典的不平衡学习问题。以往的研究往往采用欠采样技术来构造相对均衡的数据集,但在采样过程中不可避免地会丢失一些信息。在这项工作中,我们利用SMOTE算法,它产生的平衡数据集生成的ATP结合位点的插值的想法。选择随机森林作为分类器,以确保可接受的训练速度。与基于互补模板的方法相结合,进一步提高了该方法的预测性能。通过与其他基于序列的预测器的比较,我们所提出的方法取得了令人满意的性能,证明是有效的ATP结合位点的预测。
Abstract Correctly identifying the protein-ATP binding site is valuable for both protein function annotation and new drug discovery. However, the number of non-ATP-binding residues is much more than the number of ATP-binding residues, which makes the prediction a classical imbalanced learning problem. Previous studies often apply the under-sampling technique to construct a relatively balanced dataset, but some information is inevitably lost during the sample process. In this work, we utilize the SMOTE algorithm, which generates the balanced dataset by generating ATP-binding sites with the idea of interpolation. The Random Forest is selected as classifier to ensure the acceptable training speed. With the combination of complementary template-based method, the prediction performance of the proposed method is further improved. After comparing with other sequence-based predictors, our proposed method achieves satisfying performance and proved to be efficient for ATP-binding sites prediction.
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