A New Perspective on Algorithms for Optimizing Policies under Uncertainty
A New Perspective on Algorithms for Optimizing Policies under Uncertainty
复制标题
不确定性下优化政策算法的新视角
DOI:
--
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
R. Dechter
中科院分区:
文献类型:
--
作者:
R. Dechter
The paper takes a fresh look at algorithms for maximizing expected utility over a set of policies, that is, a set of possible ways of reacting to observations about an uncertain state of the world. Using the bucket-elimination framework, we characterize the complexity of this optimization task by graph-based parameters, and devise an improved variant of existing algorithms. The improvement is shown to yield a dramatic gain in complexity when the probabilistic subgraph (of the influence diagram) is sparse, regardless of the complexity introduced by its utility subgraph.