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Hierarchical Mixtures of Experts and the EM Algorithm
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Hierarchical Mixtures of Experts and the EM Algorithm

著者: Michael I Jordan; Robert A Jacobs; MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB.
出版商: Ft. Belvoir Defense Technical Information Center 06 AUG 1993.
版本/格式:   电子图书 : 英语
提要:
We present a tree-structured architecture for supervised learning. The statistical model underlying the architecture is a hierarchical mixture model in which both the mixture coefficients and the mixture components are generalized linear models (GLIM's). Learning is treated as a maximum likelihood problem; in particular, we present an Expectation-Maximization (EM) algorithm for adjusting the parameters of the  再读一些...
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所有的著者/提供者: Michael I Jordan; Robert A Jacobs; MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB.
OCLC号码: 227806326
注意: Sponsored in part by the Defense Advanced Research Projects Angecy and National Science Foundation Grants ECS92-16531 and IRI90-13991.
描述: 31 p.

摘要:

We present a tree-structured architecture for supervised learning. The statistical model underlying the architecture is a hierarchical mixture model in which both the mixture coefficients and the mixture components are generalized linear models (GLIM's). Learning is treated as a maximum likelihood problem; in particular, we present an Expectation-Maximization (EM) algorithm for adjusting the parameters of the architecture. We also develop an on-line learning algorithm in which the parameters are updated incrementally. Comparative simulation results are presented in the robot dynamics domain.

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