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Warning: This post contains abstract depictions of nudity and may be unsuitable for the workplace Yahoo's recently open sourced neural network , open_nsfw , is a fine tuned Residual Network which scores images on a scale of to on its suitability for use in the workplace. In the documentation, Yahoo notes Defining NSFW material is subjective and the task of identifying these images is non-trivial. Moreover, what may be objectionable in one context can be suitable in another. What makes an image NSFW, according to Yahoo? I explore this question with a clever new visualization technique by Nguyen et al. . Like Google's Deep Dream , this visualization trick works by maximally activating certain neurons of the classifier. Unlike deep dream, we optimize these activations by performing descent on a parameterization of the manifold of natural images. This parametrization takes the form of...

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