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. 2019 Aug 15:166:4-21.
doi: 10.1016/j.ymeth.2019.04.008. Epub 2019 Apr 22.

Deep learning in bioinformatics: Introduction, application, and perspective in the big data era

Yu Li  1 , Chao Huang  2 , Lizhong Ding  3 , Zhongxiao Li  1 , Yijie Pan  2 , Xin Gao  4
Affiliations

Deep learning in bioinformatics: Introduction, application, and perspective in the big data era

Yu Li et al. Methods. .

Abstract

Deep learning, which is especially formidable in handling big data, has achieved great success in various fields, including bioinformatics. With the advances of the big data era in biology, it is foreseeable that deep learning will become increasingly important in the field and will be incorporated in vast majorities of analysis pipelines. In this review, we provide both the exoteric introduction of deep learning, and concrete examples and implementations of its representative applications in bioinformatics. We start from the recent achievements of deep learning in the bioinformatics field, pointing out the problems which are suitable to use deep learning. After that, we introduce deep learning in an easy-to-understand fashion, from shallow neural networks to legendary convolutional neural networks, legendary recurrent neural networks, graph neural networks, generative adversarial networks, variational autoencoder, and the most recent state-of-the-art architectures. After that, we provide eight examples, covering five bioinformatics research directions and all the four kinds of data type, with the implementation written in Tensorflow and Keras. Finally, we discuss the common issues, such as overfitting and interpretability, that users will encounter when adopting deep learning methods and provide corresponding suggestions. The implementations are freely available at https://github.com/lykaust15/Deep_learning_examples.

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