mGPT: A Probabilistic Planner Based on Heuristic Search
mGPT: A Probabilistic Planner Based on Heuristic Search
复制标题
mGPT:基于启发式搜索的概率规划器
DOI:
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发表时间:
2005
影响因子:
5
通讯作者:
Hector Geffner
中科院分区:
文献类型:
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作者:
Blai Bonet;Hector Geffner
We describe the version of the GPT planner used in the probabilistic track of the 4th International Planning Competition (IPC-4). This version, called mGPT, solves Markov Decision Processes specified in the PPDDL language by extracting and using different classes of lower bounds along with various heuristic-search algorithms. The lower bounds are extracted from deterministic relaxations where the alternative probabilistic effects of an action are mapped into different, independent, deterministic actions. The heuristic-search algorithms use these lower bounds for focusing the updates and delivering a consistent value function over all states reachable from the initial state and the greedy policy.