资料可以直接运行，是matlab源码，实现了AI领域常见的手写字符MNIST数据集的识别，一般都是python做，matlab实现的很少，就算有也经常报错，因此这里是提供了例程以及数据集！数据集也是matlab能直接读取的MNIST格式！下载这个资料连数据集都不用单独下载了，节省时间。(The data can be run directly. It is the source code of MATLAB. It realizes the recognition of MNIST data set, which is a common handwritten character in AI field. Generally, it is done by python. There are few matlab implementations, and even if there is one, it often reports an error. So here is the routine and data set! Data set is also the MNIST format that MATLAB can read directly! Download this data set without downloading it separately, saving time.)