The adjustable resistive state of memristors makes it possible to implement sparse coding algorithms naturally and efficiently.
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Olshausen, B., Rozell, C. Sparse codes from memristor grids. Nature Nanotech 12, 722–723 (2017). https://doi.org/10.1038/nnano.2017.112
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DOI: https://doi.org/10.1038/nnano.2017.112