Varieties of Helmholtz machine

被引:71
作者
Dayan, P [1 ]
Hinton, GE [1 ]
机构
[1] UNIV TORONTO, TORONTO, ON M5S 1A1, CANADA
基金
加拿大自然科学与工程研究理事会;
关键词
expectation-maximization; unsupervised learning; feedback connections;
D O I
10.1016/S0893-6080(96)00009-3
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
The Helmholtz machine is a new unsupervised learning architecture that uses top-down connections to build probability density models of input and bottom-up connections to build inverses to those models. The wake-sleep learning algorithm for the machine involves just the purely local delta rule. This paper suggests a number of different varieties of Helmholtz machines, each with its own strengths and weaknesses. and relates them to cortical information processing. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码:1385 / 1403
页数:19
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