[1] Purdue University, United States
[2] Iowa State University, United States
[3] Ibm Tj Watson Research Center
[4] Carnegie Mellon University, United States
[5] Umversita Degh Studi di Milano, Italy
[6] University of Chicago, United States
[7] Indiana University, United States
[8] Arizona State University, United States
[9] University of Stuttgart, Germany
[10] Beijing Institute of Technology, China