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Learning to Linearize Under Uncertainty (arxiv.org)
2 points by dpflan on Sep 14, 2015 | hide | past | pdf | discuss on HN

In plain words: A network watches unlabeled video and learns to predict future frames, arranging its features so that how the scene changes becomes a simple straight-line shift. Random hidden variables let it handle unpredictable parts, unlike usual predictors that must guess one exact future.

Abstract

Training deep feature hierarchies to solve supervised learning tasks has achieved state of the art performance on many problems in computer vision. However, a principled way in which to train such hierarchies in the unsupervised setting has remained elusive. In this work we suggest a new architecture and loss for training deep feature hierarchies that linearize the transformations observed in unlabeled natural video sequences. This is done by training a generative model to predict video frames. We also address the problem of inherent uncertainty in prediction by introducing latent variables that are non-deterministic functions of the input into the network architecture.

Ross Goroshin, Michael Mathieu, Yann LeCun
arXiv:1506.03011 · cs.CV · submitted Jun 9, 2015 · updated Sep 10, 2015
abstract · pdf · html · To appear at NIPS 2015

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