The implementation of Occlusion Sensitivity experiments in paper Visualizing and Understanding Convolutional Networks.
https://github.com/BUPTLdy/occlusion_experiments/blob/master/Occlusion_experiments.ipynb
Zeiler, M. D. and Fergus, R. (2013) Visualizing and Understanding Convolutional Networks.
http://arxiv.org/abs/1311.2901