Published on in Vol 14, No 3 (2012): May-Jun
1 Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun, China
2 School of Mathematics, Jilin University, Changchun, China
3 Department of Computer Science and Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
4 Department of Pathology and Anatomical Sciences and Ellis Fischel Cancer Center, University of Missouri, Columbia, MO, United States
5 Department of Computer Science, University of Missouri, Columbia, MO, United States