1 Joint Bioinformatics Graduate Program, Department of Information Science, George W. Donaghey College of Engineering and Information Technology, University of Arkansas at Little Rock and University of Arkansas for Medical Sciences, 2801 S. University Ave, Little Rock, AR 72204, USA. dxli@ualr.edu.
2 School of Computer Science, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, USA. wyang1@andrew.cmu.edu.
3 Department of Genetics, Yale University, New Haven, CT 06520, USA. jialing.zhang@yale.edu.
4 Joint Bioinformatics Graduate Program, Department of Information Science, George W. Donaghey College of Engineering and Information Technology, University of Arkansas at Little Rock and University of Arkansas for Medical Sciences, 2801 S. University Ave, Little Rock, AR 72204, USA. wxyang1@ualr.edu.
5 Joint Bioinformatics Graduate Program, Department of Information Science, George W. Donaghey College of Engineering and Information Technology, University of Arkansas at Little Rock and University of Arkansas for Medical Sciences, 2801 S. University Ave, Little Rock, AR 72204, USA. rxguan@ualr.edu.
6 Joint Bioinformatics Graduate Program, Department of Information Science, George W. Donaghey College of Engineering and Information Technology, University of Arkansas at Little Rock and University of Arkansas for Medical Sciences, 2801 S. University Ave, Little Rock, AR 72204, USA. mqyang@ualr.edu.