Publications

    1. Ron Alford, Vikas Shivashankar, Mark Roberts, Jeremy Frank, and David W. Aha. Hierarchical planning: Relating task and goal decomposition with task sharing. In Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence (IJCAI), New York City, NY, USA, July 2016. AAAI Press. [ bib | slides ]
    2. Ron Alford, Gregor Behnke, Daniel Höller, Pascal Bercher, Susanne Biundo, and David W. Aha. Bound to Plan: Exploiting Classical Heuristics via Automatic Translations of Tail-Recursive HTN Problems. In Proceedings of the Twenty-Six International Conference on Automated Planning and Scheduling (ICAPS), London, UK, June 2016. AAAI Press. [ bib | slides ]
    3. Vikas Shivashankar, Ron Alford, Mark Roberts, and David W. Aha. Cost-optimal algorithms for hierarchical goal network planning: a preliminary report. In ICAPS Workshop on Heuristics and Search for Domain-Independent Planning (HSDIP), London, UK, June 2016. [ bib ]
    4. Mark Roberts, Ron Alford, Vikas Shivashankar, Michael Leece, Shubham Gupta, and David W. Aha. Goal reasoning, planning, and acting with actorsim, the actor simulator. In ICAPS Workshop on Planning and Robotics (PlanRob), London, UK, June 2016. [ bib ]
    5. Hayley Borck, Justin Karneeb, Michael W. Floyd, Ron Alford and David W. Aha. Case-based Policy and Goal Recognition. In Proceedings of the 23rd International Conference on Case-Based Reasoning, Frankfurt, Germany, September 2015. [ bib ]
    6. Ron Alford, Pascal Bercher, David W. Aha. Tight bounds for HTN planning with Task Insertion. In Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence (IJCAI), Buenos Aires, Argentina, July 2015. AAAI Press. [ bib | slides | poster ]
    7. Ron Alford, Pascal Bercher, David W. Aha. Tight bounds for HTN planning with Task Insertion (Extended Abstract). In Proceedings of the Eighth Annual Symposium on Combinatorial Search (SoCS), Ein Gedi, Isreal, June 2015. AAAI Press. [ bib ]
    8. Ron Alford, Pascal Bercher, David W. Aha. Tight bounds for HTN planning. In Proceedings of the Twenty-Fifth International Conference on Automated Planning and Scheduling (ICAPS), Jerusalem, Isreal, June 2015. AAAI Press. [ bib ]
    9. Ron Alford Hayley Borck, Justin Karneeb, David W. Aha. Active behavior recognition in beyond visual range air combat. In Proceedings of the Third Annual Conference on Advances in Cognitive Systems (ACS), Atlanta, GA, USA, May 2015. Cognitive Systems Foundation. [ bib | slides ]
    10. Hayley Borck, Justin Karneeb, Ron Alford, David W. Aha. Case-based behavior recognition in beyond visual range air combat. In Proceedings of the Twenty-Eighth International Florida Artificial Intelligence Research Society Conference (FLAIRS), Hollywood, FL, USA, May 2015. AAAI Press. [ bib ]
    11. Hayley Borck, Justin Karneeb, Ron Alford, David W. Aha. Case-Based Behavior Recognition to Facilitate Planning in Unmanned Air Vehicles. In Case-based Agents: Papers from the ICCBR Workshop. University College Cork: Cork, Ireland. September, 2014. [ bib ]
    12. Ron Alford, Ugur Kuter, Dana Nau, and Robert P. Goldman. Plan aggregation for strong cyclic planning in nondeterministic domains. Artificial Intelligence, 216:206-232, 2014. [ bib | DOI ]
    13. Ron Alford, Vikas Shivashankar, Ugur Kuter, and Dana S. Nau. On the feasibility of planning graph style heuristics for HTN planning. In Proceedings of the Twenth-Fourth International Conference on Automated Planning and Scheduling (ICAPS), pages 2–10, Portsmouth, NH, USA, June 2014. AAAI Press. [ bib | slides | video ]
    14. Mark Roberts, Swaroop Vattam, Ronald Alford, Bryan Auslander, Justin Karneeb, Matthew Molineaux, Tom Apker, James McMahon, and David W. Aha. Iterative Goal Refinement for Robotics. In Planning and Robotics: Papers from the ICAPS Workshop. Portsmouth, NH, USA, June 2014. AAAI Press. [ bib ]
    15. Ron Alford. Search Complexities for HTN Planning. PhD thesis, University of Maryland, College Park, December 2013. [ bib | slides ]
    16. Vikas Shivashankar, Ron Alford, Ugur Kuter, and Dana S. Nau. Hierarchical goal networks and goal-driven autonomy: Going where AI planning meets goal reasoning. In Goal Reasoning: Papers from the ACS Workshop, pages 95–110, Baltimore, MD, USA, December 2013. [ bib ]
    17. Vikas Shivashankar, Ron Alford, Ugur Kuter, and Dana Nau. The GoDeL planning system: a more perfect union of domain-independent and hierarchical planning. In Proceedings of the Twenty-Third international Joint Conference on Artificial Intelligence (IJCAI), pages 2380–2386, Beijing, China, August 2013. AAAI Press. [ bib ]
    18. Ron Alford, Vikas Shivashankar, Ugur Kuter, and Dana S Nau. HTN problem spaces: Structure, algorithms, termination. In Proceedings of the Fifth Annual Symposium on Combinatorial Search (SoCS), pages 2–9, Niagara Falls, Canada, July 2012. AAAI Press. [ bib | slides ]
    19. Vikas Shivashankar, Ugur Kuter, Dana Nau, and Ron Alford. A hierarchical goal-based formalism and algorithm for single-agent planning. In Proceedings of the 11th International Conference on Autonomous Agents and Multiagent Systems, volume 2, pages 981–988, Valencia, Spain, June 2012. International Foundation for Autonomous Agents and Multiagent Systems. [ bib ]
    20. Ron Alford, Ugur Kuter, and Dana S Nau. Translating HTNs to PDDL: A small amount of domain knowledge can go a long way. In Proceedings of the Twenty-First International Joint Conference on Artificial Intelligence (IJCAI), pages 1629-1634, Pasadena, CA, USA, July 2009. AAAI Press. [ bib | slides ]
    21. Ron Alford, Ugur Kuter, Dana Nau, Elnatan Reisner, and Robert Goldman. Maintaining focus: Overcoming attention deficit disorder in contingent planning. In Proceedings of the Twenty-Second International Florida Artificial Intelligence Research Society Conference (FLAIRS), pages 177–182, Sanibel Island, FL, USA, May 2009. AAAI Press. [ bib | slides ]
    22. ZD Myers, ES Seo, JZ Wang, RW Alford, K Abe, K Anraku, Y Asaoka, M Fujikawa, M Imori, T Maeno, et al. Cosmic ray 1h and 2h spectra from BESS 98. Advances in Space Research, 35(1):151–155, 2005. [ bib | DOI ]
    23. O Ganel, ES Seo, HS Ahn, R Alford, KC Kim, MH Lee, L Liu, L Lutz, A Malinine, E Schindhelm, et al. Cosmic ray energetics and mass (CREAM): calibrating a cosmic ray calorimeter. In Proceedings of the 10th International Conference on Calorimetry in High Energy Physics, pages 133–138, Pasadena, CA, 2002. [ bib ]
    24. O Ganel, ES Seo, HS Ahn, R Alford, S Beach, JJ Beatty, S Coutu, MA Duvernois, YJ Han, HJ Kim, et al. Cosmic ray energetics and mass: configuration and progress on construction and testing. In Proceedings of the 27th International Cosmic Ray Conference, volume 6, page 2163, 2001. [ bib ]
    25. JZ Wang, ES Seo, HS Ahn, O Ganel, YJ Han, HJ Kim, KC Kim, SK Kim, IM Koo, YI Kwon, et al. Space based calorimeters: Heavy ion simulations. In Proceedings of the 27th International Cosmic Ray Conference, volume 4, page 1445, 2001. [ bib ]
    26. JZ Wang, ES Seo, RW Alford, K Abe, K Anraku, M Fujikawa, M Imori, T Maeno, Y Makida, N Matsui, et al. Isotopic measurements of cosmic-ray hydrogen and helium during the 1997 solar minimum. In Proceedings of the 27th International Cosmic Ray Conference, volume 5, page 1671, 2001. [ bib ]