1. Former Research Intern, Bentley Systems Inc., Watertown, CT; presently, Research Scientist, Facebook Inc., 1 Hacker Way #15, Menlo Park, CA 94025.
2. Bentley Fellow, Director of Applied Research, Bentley Systems Inc., 27 Siemon Company Dr., Watertown, CT 06795 (corresponding author).
3. Software Engineer II, Bentley Systems Singapore Pte. Ltd., 1 Harbour Front Place, Harbour Front Tower One, #18-01 to 03, Singapore 098633.