.. _cn_api_fluid_layers_logsigmoid: logsigmoid ------------------------------- .. py:function:: paddle.fluid.layers.logsigmoid(x, name=None) Logsigmoid激活函数。 .. math:: out = \log \frac{1}{1 + e^{-x}} 参数: - **x** - LogSigmoid算子的输入 - **use_cudnn** (BOOLEAN) – (bool,默认为false)是否仅用于cudnn核,需要安装cudnn 返回: LogSigmoid算子的输出 **代码示例**: .. code-block:: python import paddle.fluid as fluid data = fluid.layers.data(name="input", shape=[32, 784]) result = fluid.layers.logsigmoid(data)