Monday, June 13, 2016

Discovering Causal Signals in Images - implementation -


Discovering Causal Signals in Images by David Lopez-Paz, Robert Nishihara, Soumith Chintala, Bernhard Schölkopf and Léon Bottou
The purpose of this paper is to point out and assay observable causal signals within collections of static images. We achieve this goal in two steps. First, we take a learning approach to observational causal inference, and build a classifier that achieves state-of-the-art performance on finding the causal direction between pairs of random variables, when given samples from their joint distribution. Second, we use our causal direction finder to effectively distinguish between features of objects and features of their contexts in collections of static images. Our experiments demonstrate the existence of (1) a relation between the direction of causality and the difference between objects and their contexts, and (2) observable causal signals in collections of static images.
 The implementation is here: code

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