deeplearning.ai - 深度学习的实用层面

改善深层神经网络：超参数调试、正则化以及优化 吴恩达 Andrew Ng 深度学习的实用层面 Setting up your ML application Train/dev/test sets (训练、开发、测试集) the goal of the dev set is to test different algorithms on it and see which algorithm work

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