1. Dept. of Computer Science, North Carolina State Univ., Raleigh, NC 27695 (corresponding author).
2. Dept. of Computer Science, North Carolina State Univ., Raleigh, NC 27695.
3. Dept. of Civil Engineering, North Carolina State Univ., Raleigh, NC 27695.
4. Assistant Professor, Dept. of Civil Engineering, North Carolina State Univ., Raleigh, NC 27695.
5. Assistant Professor, Dept. of Construction Science, Texas A&M Univ., College Station, TX 77843.
6. Associate Professor, Dept. of Computer Science, North Carolina State Univ., Raleigh, NC 27695.