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MNIST is a database of handwritten digits collected by Yann Lecun, a famous computer scientist, when he was working at AT&T-Bell Labs on the problem of automation of check readings for banks. The data set is a benchmark widely used in machine learning research. Due to its small size it is also widely used for educational purposes.s based on C++ but provides APIs for Python and Matlab.
13
votes
Artificially expanding the datasets through rotation of images in MNIST
The problem is that numbers are not invariant to rotations.
For example, see what happens when you rotate a 4 in steps of 90 degrees:
So unless your task includes recognizing numbers which are wr …