School of Computer Science and Technology, Xidian University, Xian, Shaanxi, China.|Department of Biomedical Informatics, Center for Noncoding RNA Medicine, School of Basic Medical Sciences, Peking University, Beijing, China.|School of Computer Science and Technology, Xidian University, Xian, Shaanxi, China.|Department of Biomedical Informatics, Center for Noncoding RNA Medicine, School of Basic Medical Sciences, Peking University, Beijing, China.