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Chinese characters. (A) Examples of Chinese character images, the dataset is the most frequently used 2,500 Chinese characters, the size of the images is 25 × 25 pixels. (B) Decomposition of a typical Chinese character, which means “chess”. This left and right structured character is composed of a radical (part 1) at the left side and another character at the right side. For the right component, it is composed of four kinds of strokes (parts 2–5)
