Region-Based Incremental Pruning for POMDPs
Region-Based Incremental Pruning for POMDPs
复制标题
POMDP 基于区域的增量剪枝
DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
S. Zilberstein
中科院分区:
文献类型:
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作者:
Z. Feng;S. Zilberstein
We present a major improvement to the incremental pruning algorithm for solving partially observable Markov decision processes. Our technique targets the cross-sum step of the dynamic programming (DP) update, a key source of complexity in POMDP algorithms. Instead of reasoning about the whole belief space when pruning the cross-sums, our algorithm divides the belief space into smaller regions and performs independent pruning in each region. We evaluate the benefits of the new technique both analytically and experimentally, and show that it produces very significant performance gains. The results contribute to the scalability of POMDP algorithms to domains that cannot be handled by the best existing techniques.