Stephen F. Roehrig
Prior to joining the Heinz School faculty, Professor Roehrig was a research mathematician at the Coast Guard R&D Center in Groton, Conn., where he focused on analytical and simulation models of Coast Guard missions, and their integration in model management systems.
Professor Roehrig's current research interests include uncertainty management in artificial intelligence, the use of decision models in conjunction with those methods, and the use of numerical methods for logical inference. His recently completed dissertation "Probabilistic and Defeasible Reasoning Using Extended Path Analysis" shows how the statistical technique of path analysis can be reinterpreted as a means of organizing and propagating probabilistic belief in expert systems.
Professor Roehrig received a bachelor's degree in mathematics from Suffolk University, Boston, a master's degree in mathematics from the University of Rhode Island, and a PhD in information systems from the Wharton School, University of Pennsylvania.
"Disclosure Detection in Multivariate Categorical Databases" (with S. Dutta Chowdhury, G. Duncan, R. Krishnan, and S. Mukherjee); Management Science, forthcoming.
"The Relationship Between Advertising and Content Provision on the Internet" (with Y. Yuan and J. Caulkins); European Journal of Marketing, forthcoming.
"Disclosure Detection in Multiple Linked Categorical Datafiles; A Unified Network Approach" (with Rema Padman, George Duncan, and Ramayya Krishnan); Proceedings of Statistical Data Protection '98, Lisbon, Portugal, forthcoming.
"Modeling Management in Electronic Markets for Decision Technologies: A Software Agent Approach" (with H.K. Bhargava, R. Krishnan, M. Casey, D. Kaplan, and R. Muller); Proceedings of the 30th Hawaii International Conference on System Sciences, 1997.
"Cell Suppression to Limit Content-Based Disclosure" (with G. Duncan, R. Krishnan, R. Padman, P. Reuther); Proceedings of the 30th Hawaii International Conference on System Sciences, 1997.
"Incompletely Specified Probabilistic Networks," Journal of Management Information Systems, Vol. 12, pp. 81-96, 1995-96.
"On the Duration of Copyright Protection for Digital Information" (with Yuehong Yuan); The Internet and Telecommunications Policy: Selected Papers from the 1995 Telecommunications Policy Research Conference; Erlbaum, Hillsdale, New Jersey, 1996.
"Numerical Inference on Statistical Databases" (with Sumit Dutta Chowdhury, George Duncan, Ramayya Krishnan, and Sumitra Mukherjee); Proceedings of the 29th Hawaii International Conference on System Sciences, 1996.
"Path Analysis and Probabilistic Networks," Decision Support System, Winter 1995.
"A Genetic Programming Approach for Heuristic Selection in Constrained Project Scheduling" (with Rema Padman); Computer Science and Operations Research: Recent Advances in the Interface (R. Helgason, ed.), Kluwer, 1995.
"Service Models, Operational Decisions and Architecture of Digital Libraries" (with Yuehong Yan); Proceedings of Digital Libraries '95, (F. Shipman, R. Furata, and D. Levy, eds.), Austin, Texas, June 1995.
"Probabilistic Inference and Path Analysis," Decision Support Systems, Elsevier, 1995.
PhD, Information Systems, The Wharton School, University of Pennsylvania
- A Genetic Algorithm for the Home-Delivered Meals Location-Routing Problem
- Policy Systems: The Integration of Information Technology into Policy Analysis, Planning, and Program Analysis
- Mediating the Tension Between Information Privacy and Information Access: The Role of Digital Government
- Point Demand Forecasting
- Facility Location Model for Home-Delivered Services: Application to the Meals-on-Wheels Program
- Incompletely Specified Probabilistic Networks