[ DP/from scratch]이미지
The images are converted into 28 by 28 pixels, 784 pixels.And for each pixel, we obtain a grayscale intensity between 0,that's white, and 255, that's black.And then there's gray in the middle. For each digitized image i we have categorical outcomesYi, which can be one of 10 values, 0, 1, 2, 3 up to 9,and features Xi1 all the way up to Xi784.We can use boldface to distinguish the vector of pre..