> For the complete documentation index, see [llms.txt](https://deeplearning4j.konduit.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://deeplearning4j.konduit.ai/zhong-wen-v1.0.0/keras-dao-ru/zhi-chi-gong-neng/ji-huo.md).

# 激活

### 可用的激活

我们支持所有的[Keras激活函数](https://keras.io/activations)，即：

* softmax
* elu
* selu
* softplus
* softsign
* relu
* tanh
* sigmoid
* hard\_sigmoid
* linear

Keras到DL4J激活函数的映射定义在[KerasActivationUtils](https://github.com/deeplearning4j/deeplearning4j/blob/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/utils/KerasActivationUtils.java)中。