Computer Science Department, IUPUI, 723 W, Michigan St,, 46037 Indianapolis IN, US. dundar@cs.iupui.edu.|Computer Science Department, IUPUI, 723 W, Michigan St,, 46037 Indianapolis IN, US. dundar@cs.iupui.edu.|Department of Computer Science and Engineering, University of California, Riverside, CA, USA. marek@cs.ucr.edu.|Department of Computer Science and Engineering, University of California, Riverside, CA, USA. marek@cs.ucr.edu.