James Geller1, Yehoshua Perl2, Licong Cui3, G Q Zhang4. 1. Department of Computer Science, Structural Analysis of Biomedical Ontologies Center (SABOC), New Jersey Institute of Technology (NJIT), United States. Electronic address: james.geller@njit.edu. 2. Department of Computer Science, Structural Analysis of Biomedical Ontologies Center (SABOC), New Jersey Institute of Technology (NJIT), United States. Electronic address: yehoshua.perl@njit.edu. 3. Department of Computer Science and Institute for Biomedical Informatics, University of Kentucky, United States. Electronic address: licong.cui@uky.edu. 4. Department of Computer Science and Institute for Biomedical Informatics, University of Kentucky, United States. Electronic address: gq.zhang@uky.edu.