2008

• Sparse stochastic finite-state controllers for POMDPs
  E. Hansen. Twenty-fourth Conference on Uncertainty in Artificial Intelligence (UAI-08), Helsinki, Finland, July 2008.

2007

• Prioritizing Bellman Backups Without a Priority Queue
  P. Dai and E. Hansen. Seventeenth International Conference on Automated Planning and Scheduling (ICAPS-07), Providence, RI, September 2007.

• Parallel Structured Duplicate Detection
  R. Zhou and E. Hansen. Twenty-Second National Conference on Artificial Intelligence (AAAI-07), Vancouver, British Columbia, Canada, July 2007.

• Indefinite-Horizon POMDPs with Action-Based Termination
  E. Hansen. Twenty-Second National Conference on Artificial Intelligence (AAAI-07), Vancouver, British Columbia, Canada, July 2007.

• Anytime Heuristic Search
  E. Hansen and R. Zhou. Journal of Artificial Intelligence Research, 28: 267-297.

• Edge Partitioning in External-Memory Graph Search
  R. Zhou and E. Hansen. Twentieth International Joint Conference on Artificial Intelligence (IJCAI-07), Hyderabad, India, January 2007.

2006

• Domain-Independent Structured Duplicate Detection
  R. Zhou and E. Hansen. Twenty-First National Conference on Artificial Intelligence (AAAI-06), Boston, MA, July 2006.

• A Breadth-First Approach to Memory-Efficient Graph Search (Nectar track)
  R. Zhou and E. Hansen. Twenty-First National Conference on Artificial Intelligence (AAAI-06), Boston, MA, July 2006.

• Parallel Breadth-First Heuristic Search on a Shared-Memory Architecture
  Y. Zhang and E. Hansen. AAAI-06 Workshop on Heuristic Search, Memory-Based Heuristics and Their Applications, Boston, MA, July 2006.

• Memory-Efficient Symbolic Heuristic Search
  R. Jensen; E. Hansen; S. Richards; and R. Zhou. Sixteenth International Conference on Automated Planning and Scheduling (ICAPS-06), The English Lake District, Cumbria, UK, June 2006.

• Breadth-First Heuristic Search
  R. Zhou and E. Hansen. Artificial Intelligence, 170: 385-408.

2005

• Bounded Policy Iteration for Decentralized POMDPs
  D. Bernstein; E. Hansen; and S. Zilberstein. Nineteenth International Joint Conference on Artificial Intelligence (IJCAI-05), Edinburgh, Scotland, July 2005.

• Planning with Continuous Resources in Stochastic Domains
  Mausam; E. Benazera; R. Brafman; N. Meuleau; and E. Hansen. Nineteenth International Joint Conference on Artificial Intelligence (IJCAI-05), Edinburgh, Scotland, July 2005.

• External-Memory Pattern Databases using Structured Duplicate Detection
  R. Zhou and E. Hansen. Twentieth National Conference on Artificial Intelligence (AAAI-05), Pittsburgh, PA, July 2005.

• Incremental Estimation of Discrete Hidden Markov Models Based on a New Backward Procedure
  G. Florez-Larrahondo; S. Bridges; and E. Hansen. Twentieth National Conference on Artificial Intelligence (AAAI-05), Pittsburgh, PA, July 2005.

• Beam-Stack Search: Integrating Backtracking with Beam Search (Best paper award)
  R. Zhou and E. Hansen. Fifteenth International Conference on Automated Planning and Scheduling (ICAPS-05), Monterey, CA, June 2005.

2004

• K-Group A* for Multiple Sequence Alignment with Quasi-Natural Gap Costs
  R. Zhou and E. Hansen. Sixteenth IEEE International Conference on Tools with Artificial Intelligence, Boca Raton, FL, November 2004.

• Dynamic Programming for Partially Observable Stochastic Games
  E. Hansen; D. Bernstein; and S. Zilberstein. Nineteenth National Conference on Artificial Intelligence (AAAI-04), San Jose, CA, July 2004.

• Structured Duplicate Detection in External-Memory Graph Search
  R. Zhou and E. Hansen. Nineteenth National Conference on Artificial Intelligence (AAAI-04), San Jose, CA, July 2004.

• Space-Efficient Memory-Based Heuristics
  R. Zhou and E. Hansen. Nineteenth National Conference on Artificial Intelligence (AAAI-04), San Jose, CA, July 2004.

• An Approach to State Aggregation for POMDPs
  Z. Feng and E. Hansen. AAAI-04 Workshop on Learning and Planning in Markov Processes -- Advances and Challenges, San Jose, CA, July 2004.

• Breadth-First Heuristic Search (Best Student Paper Award)
  R. Zhou and E. Hansen. Fourteenth International Conference on Automated Planning and Scheduling (ICAPS-04), Whistler, British Columbia, Canada, June 2004.

2003

• Sweep A*: Space-Efficient Heuristic Search in Partially-ordered Graphs
  R. Zhou and E. Hansen. Fifteenth IEEE International Conference on Tools with Artificial Intelligence, Sacremento, CA, November 2003.

• Sparse-Memory Graph Search
  R. Zhou and E. Hansen. Eighteenth International Joint Conference on Artificial Intelligence (IJCAI-03), Acapulco, Mexico, August 2003.

• Symbolic Generalization for On-Line Planning
  Z. Feng; E. Hansen; and S. Zilberstein. Nineteenth Conference on Uncertainty in Artificial Intelligence (UAI-03), Acapulco, Mexico, August 2003.

• Synthesis of Hierarchical Finite-State Controllers for POMDPs
  E. Hansen and R. Zhou. Thirteenth International Conference on Automated Planning and Scheduling (ICAPS-03), Trento, Italy, June 2003.

2002

• Symbolic Heuristic Search using Decision Diagrams
  E. Hansen; R. Zhou; and Z. Feng. Fifth International Symposium on Abstraction, Reformulation and Approximation (SARA-02), Kananaskis, Alberta, Canada, August 2002.

• Symbolic Heuristic Search for Factored Markov Decision Processes
  Z. Feng and E. Hansen. Eighteenth National Conference on Artificial Intelligence (AAAI-02), Edmonton, Alberta, Canada, July 2002.

• Memory-bounded A* Graph Search
  R. Zhou and E. Hansen. Fifteenth International FLAIRS Conference (FLAIRS-02), Pensacola, Florida, May 2002.

2001

• Approximate Planning for Factored POMDPs
  Z. Feng and E. Hansen. Sixth European Conference on Planning (ECP-01), Toledo, Spain, September 2001.

• An Improved Grid-based Approximation Algorithm for POMDPs
  R. Zhou and E. Hansen. Seventeenth International Joint Conference on Artificial Intelligence (IJCAI-01), Seattle, Washington, August 2001.

• LAO*: A Heuristic Search Algorithm that Finds Solutions with Loops.
  E. Hansen and S. Zilberstein. Artificial Intelligence, 129:35-62.

• Monitoring and Control of Anytime Algorithms: A Dynamic Programming Approach.
  E. Hansen and S. Zilberstein. Artificial Intelligence, 126:139-157.

2000

• Dynamic Programming for POMDPs using a Factored State Representation
  E. Hansen and Z. Feng. Fifth International Conference on Artificial Intelligence Planning and Scheduling (AIPS-00), Breckenridge, Colorado, April 2000.

1994 - 1998 (graduate school)

• Heuristic Search in Cyclic AND/OR Graphs
  E. Hansen and S. Zilberstein. Fifteenth National Conference on Artificial Intelligence (AAAI-98), Madison, Wisconsin, July 1998.

• Solving POMDPs by Searching in Policy Space
  E. Hansen. Fourteenth Conference on Uncertainty in Artificial Intelligence (UAI-98), Madison, Wisconsin, July 1998.

• An Improved Policy Iteration Algorithm for Partially Observable MDPs
  E. Hansen. Tenth Neural Information Processing Systems Conference (NIPS-97). Denver, Colorado, December 1997.

• Reinforcement Learning for Mixed Open-loop and Closed-loop Control.
  E. Hansen, A. Barto and S. Zilberstein. Ninth Neural Information Processing Systems Conference (NIPS-96). Denver, Colorado, December 1996.

• Monitoring the Progress of Anytime Problem-Solving
  E. Hansen and S. Zilberstein. Thirteenth National Conference on Artificial Intelligence (AAAI-96), pp. 1229-1234, Portland, Oregon, August 1996.

• Cost-Effective Sensing During Plan Execution
  E. Hansen. Twelth National Conference on Artificial Intelligence (AAAI-94). Seattle, Washington, August 1994.