tf.keras.losses.SparseCategoricalCrossentropy
时间: 2024-05-21 18:10:31 浏览: 61
tf.keras.losses.SparseCategoricalCrossentropy is a loss function that is used in multi-class classification problems where the target variable is integers representing the class labels. It measures the difference between the predicted probability distribution and the target probability distribution. It is called "sparse" because the target variable is represented by a single integer label instead of a one-hot encoded vector. The loss function calculates the cross-entropy loss between the predicted probability distribution and the true probability distribution of the target variable. The goal is to minimize this loss function during training to improve the accuracy of the model's predictions.
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