1. Ministry of Education Key Laboratory of Bioinformatics , Bioinformatics Division at the Beijing National Research Center for Information Science and Technology, Center for Synthetic and Systems Biology, Department of Automation, , Beijing 100084 , China
2. Tsinghua University , Bioinformatics Division at the Beijing National Research Center for Information Science and Technology, Center for Synthetic and Systems Biology, Department of Automation, , Beijing 100084 , China
3. Center for Statistical Science , Department of Industrial Engineering, , Beijing 100084 , China
4. Tsinghua University , Department of Industrial Engineering, , Beijing 100084 , China
5. School of Mathematical Sciences and LPMC, Nankai University , Tianjin 300071 , China