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README.md
Context
This dataset was created by Yaroslav Bulatov by taking some publicly available fonts and extracting glyphs from them to make a dataset similar to MNIST. There are 10 classes, with letters A-J.
Content
A set of training and test images of letters from A to J on various typefaces. The images size is 28x28 pixels.
Acknowledgements
The dataset can be found on Tensorflow github page as well as on the blog from Yaroslav, here.
Inspiration
This is a pretty good dataset to train classifiers! According to Yaroslav:
>> Judging by the examples, one would expect this to be a harder task
>> than MNIST. This seems to be the case -- logistic regression on top of
>> stacked auto-encoder with fine-tuning gets about 89% accuracy whereas
>> same approach gives got 98% on MNIST. Dataset consists of small
>> hand-cleaned part, about 19k instances, and large uncleaned dataset,
>> 500k instances. Two parts have approximately 0.5% and 6.5% label error
>> rate. I got this by looking through glyphs and counting how often my
>> guess of the letter didn't match it's unicode value in the font file.
Enjoy!
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