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arXiv · 1511.06241

Convolutional Clustering for Unsupervised Learning

Aysegul Dundar·Jonghoon Jin·Eugenio Culurciello
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Abstract

The task of labeling data for training deep neural networks is daunting and tedious, requiring millions of labels to achieve the current state-of-the-art results. Such reliance on large amounts of labeled data can be relaxed by exploiting hierarchical features via unsupervised learning techniques. In this work, we propose to train a deep convolutional network based on an enhanced version of the k-means clustering algorithm, which reduces the number of correlated parameters in the form of similar filters, and thus increases test categorization accuracy. We call our algorithm convolutional k-means clustering. We further show that learning the connection between the layers of a deep convolutional neural network improves its ability to be trained on a smaller amount of labeled data. Our experiments show that the proposed algorithm outperforms other techniques that learn filters unsupervised. Specifically, we obtained a test accuracy of 74.1% on STL-10 and a test error of 0.5% on MNIST.

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Aysegul Dundar, Jonghoon Jin, Eugenio Culurciello. 2016-02-16. Convolutional Clustering for Unsupervised Learning. https://arxiv.org/abs/1511.06241

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