- Associate Professor
Main Office3018 Black Engr
Ames, IA 50011-2164
Dr. Olafsson's research focuses on three primary areas: discrete optimization, data mining methodology, and data mining of surveillance databases. He is the co-inventor of the Nested Partitions method, a metaheuristic that has been used to solve many large-scale discrete optimization problems. Along with his students, he has developed optimization-based methods for such data mining tasks as data clustering, attribute selection and instance selection. Most recently he has been applying these and other data mining techniques to analyze surveillance databases, including a database of criminal incidents, a database of accidents and illnesses in the mining industry, and a database of outbreaks of foodborne illnesses.
J. Yang and S. Olafsson. 2009. "Near Optimal Feature Selection for Large Databases" Journal of the Operational Research Society, 60, 1045-1055.
J. Kim, J. Yang and S. Olafsson. 2009. "An Optimization Approach to Data Clustering" Journal of the Operational Research Society, 60, 1069-1084.
Lee\, J.S. and S. Olafsson. 2009. "Two-Way Cooperative Prediction for Collaborative Filtering Recommendations" Expert Systems with Applications, 36(3), 5353-5361.
Olafsson, S., X. Li, and S. Wu. 2008. "Operations research and data mining" European Journal on Operational Research, 187, 1429-1448.
Vuthipadadon, S., and S. Olafsson. 2007. "An integer programming approach for scheduling inbound calls in call centers" International Journal on Operational Research, 2(4), 414-428.
Yang, J., and S. Olafsson. 2006. "Optimization-based feature selection with adaptive instance sampling" Computers and Operations Research, 33(11), 3088-3106.
Olafsson, S. 2006. "Introduction to operations research and data mining" Computers and Operations Research, 33(11), 3067-3069.
Olafsson, S., and J. Yang. 2005. "Intelligent partitioning for feature relevance analysis" INFORMS J. on Computing, 17(3), 339-355.
Li, X., and S. Olafsson. 2005. "Discovering dispatching rules using data mining" Journal on Scheduling, 8(6), 515-527.
Won, J., and S. Olafsson. 2005. "Joint order batching and order picking in warehouse operations" International Journal of Production Research, 43(7), 1427-1442.