1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Stanford Univ., Stanford, CA.
2. Postdoctoral Scholar, Dept. of Civil and Environmental Engineering, Stanford Univ., Stanford, CA.
3. Professor, Dept. of Computer Science, Stanford Univ., Stanford, CA.
4. Professor, Dept. of Civil and Environmental Engineering, Stanford Univ., Stanford, CA.