1. Research Assistant, Dept. of Civil Engineering, Univ. of Toronto, Toronto, ON, Canada M4S 1A4 (corresponding author).
2. Associate Professor, Dept. of Civil Engineering, Univ. of Toronto, Toronto, ON, Canada M4S 1A4.
3. Research Assistant, Dept. of Computer Science, Univ. of Toronto, Toronto, ON, Canada M5S 3G4.
4. Postdoctoral Fellow, Dept. of Civil Engineering, Univ. of Toronto, Toronto, ON, Canada M4S 1A4.