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README.md
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license: mit
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license: mit
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# EMNIST Letters Dataset
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## Authors
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- **Gregory Cohen**
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- **Saeed Afshar**
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- **Jonathan Tapson**
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- **Andre van Schaik**
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The MARCS Institute for Brain, Behaviour and Development
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Western Sydney University
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Penrith, Australia 2751
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Email: [email protected]
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## What is it?
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The EMNIST dataset is a set of handwritten character digits derived from the NIST Special Database 19 ([NIST Special Database 19](https://www.nist.gov/srd/nist-special-database-19)) and converted to a 28x28 pixel image format and dataset structure that directly matches the MNIST dataset ([MNIST](http://yann.lecun.com/exdb/mnist/)). Further information on the dataset contents and conversion process can be found in the paper available at [arXiv:1702.05373v1](https://arxiv.org/abs/1702.05373v1).
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## Formats
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The version of the dataset is provided in the binary format as the original MNIST dataset as outlined in [MNIST dataset format](http://yann.lecun.com/exdb/mnist/).
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## Dataset Summary
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- **EMNIST Letters**: 145,600 characters. 26 balanced classes.
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Please refer to the EMNIST paper (available at [arXiv:1702.05373v1](https://arxiv.org/abs/1702.05373v1)) for further details of the dataset structure.
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## How to cite
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Please cite the following paper when using or referencing the dataset:
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Cohen, G., Afshar, S., Tapson, J., & van Schaik, A. (2017). EMNIST: an extension of MNIST to handwritten letters. Retrieved from [arXiv:1702.05373](http://arxiv.org/abs/1702.05373)
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## Files
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The dataset consists of the following files:
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- emnist-letters-mapping.txt
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- emnist-letters-test-images-idx3-ubyte.gz
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- emnist-letters-test-labels-idx1-ubyte.gz
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- emnist-letters-train-images-idx3-ubyte.gz
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- emnist-letters-train-labels-idx1-ubyte.gz
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## License and Usage
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This copy of dataset is co-located on Hugging Face for non-profitable usage. If there are any conflicts of copyright, please contact me to delete it.
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