Learning Fast Approximations of Sparse Coding

@inproceedings{Gregor2010LearningFA,
  title={Learning Fast Approximations of Sparse Coding},
  author={Karol Gregor and Yann LeCun},
  booktitle={ICML},
  year={2010}
}
In Sparse Coding (SC), input vectors are reconstructed using a sparse linear combination of basis vectors. SC has become a popular method for extracting features from data. For a given input, SC minimizes a quadratic reconstruction error with an L1 penalty term on the code. The process is often too slow for applications such as real-time pattern recognition. We proposed two versions of a very fast algorithm that produces approximate estimates of the sparse code that can be used to compute good… CONTINUE READING
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