1. Novartis Pharmaceuticals Corporation, Advanced Methodology and Data Science , 1 Health Plaza, East Hanover, New Jersey 07936, U.S.A
2. Department of Statistics & Data Science, Carnegie Mellon University , 132H Baker Hall, Pittsburgh, Pennsylvania 15213, U.S.A. aramdas@stat.cmu.edu
3. Department of Statistics & Data Science, Carnegie Mellon University , 132H Baker Hall, Pittsburgh, Pennsylvania 15213, U.S.A. siva@stat.cmu.edu
4. Department of Statistics & Data Science, Carnegie Mellon University , 132H Baker Hall, Pittsburgh, Pennsylvania 15213, U.S.A. larry@stat.cmu.edu