Inference With Deep Generative Priors in High Dimensions
Inference With Deep Generative Priors in High Dimensions
复制标题
高维深度生成先验的推理
DOI:
10.1109/jsait.2020.2986321
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Fletcher, Alyson K.
中科院分区:
文献类型:
--
作者:
Pandit, Parthe;Sahraee-Ardakan, Mojtaba;Rangan, Sundeep;Schniter, Philip;Fletcher, Alyson K.
Deep generative priors offer powerful models for complex-structured data, such as images, audio, and text. Using these priors in inverse problems typically requires estimating the input and/or hidden signals in a multi-layer deep neural network from observation of its output. While these approaches have been successful in practice, rigorous performance analysis is complicated by the non-convex nature of the underlying optimization problems. This paper presents a novel algorithm, Multi-Layer Vector Approximate Message Passing (ML-VAMP), for inference in multi-layer stochastic neural networks. ML-VAMP can be configured to compute maximum a priori (MAP) or approximate minimum mean-squared error (MMSE) estimates for these networks. We show that the performance of ML-VAMP can be exactly predicted in a certain high-dimensional random limit. Furthermore, under certain conditions, ML-VAMP yields estimates that achieve the minimum (i.e., Bayes-optimal) MSE as predicted by the replica method. In this way, ML-VAMP provides a computationally efficient method for multi-layer inference with an exact performance characterization and testable conditions for optimality in the large-system limit.
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影响因子:
32.8
作者:
Wainwright, Martin J.;Jordan, Michael I.
通讯作者:
Jordan, Michael I.
影响因子:
3.9
作者:
Roman Novak;Lechao Xiao;Yasaman Bahri;Jaehoon Lee;Greg Yang;Jiri Hron;Daniel A. Abolafia;Jeffrey Pennin
通讯作者:
Roman Novak;Lechao Xiao;Yasaman Bahri;Jaehoon Lee;Greg Yang;Jiri Hron;Daniel A. Abolafia;Jeffrey Pennin
DOI:
10.1016/b978-0-12-386908-1.00037-9
发表时间:
2018-11
期刊:
Wiley Series in Probability and Statistics
影响因子:
--
作者:
Bruce E. Blaine
通讯作者:
Bruce E. Blaine
影响因子:
5.4
作者:
Subrata Sarkar;A. Fletcher;S. Rangan;Philip Schniter
通讯作者:
Subrata Sarkar;A. Fletcher;S. Rangan;Philip Schniter
影响因子:
2.5
作者:
Paul Hand;V. Voroninski
通讯作者:
Paul Hand;V. Voroninski