手写数字样本库的下载地址

http://www.cs.nyu.edu/~roweis/data.html

Handwritten Digits

    • MNIST Handwritten Digits [data/mnist_all.mat]
      [training pictures: 0 1 2 3 4 5 6 7 8 9 ]
      [testing pictures: 0 1 2 3 4 5 6 7 8 9 ]
      8-bit grayscale images of "0" through "9"; about 6K training examples of each class; 1K test examples
    • USPS Handwritten Digits [data/usps_all.mat]
      [pictures: 0 1 2 3 4 5 6 7 8 9 ]
      8-bit grayscale images of "0" through "9"; 1100 examples of each class.
    • Binary Alphadigits [data/binaryalphadigs.mat] [picture]
      Binary 20x16 digits of "0" through "9" and capital "A" through "Z". 39 examples of each class.
      From Simon Lucas' ([email protected]), Algoval system. 

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