Emergence of Simple-Cell Receptive Field Properties by Learning a Sparse Code for Natural Images.¶
Olshausen, B. A., & Field, D. J. (1996). Emergence of Simple-Cell Receptive Field Properties by Learning a Sparse Code for Natural Images. Nature, 381(6583), 607-609.
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Primes¶
- Sparse Coding
- In neuroscience — the canonical case — any single sensory stimulus activates a small fraction of cortical neurons; place cells and grid cells are sparse codes for spatial location, and efficient-coding optimisation on natural images yields sparse V1 receptive fields.
This sourceDerives sparse, localized, oriented, bandpass basis functions matching V1 simple-cell receptive fields by minimizing reconstruction error plus a sparsity penalty over an overcomplete dictionary.
- In neuroscience — the canonical case — any single sensory stimulus activates a small fraction of cortical neurons; place cells and grid cells are sparse codes for spatial location, and efficient-coding optimisation on natural images yields sparse V1 receptive fields.
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