.. _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** (Variable)- 张量(Tensor) - **name** (str|None) - 该层名称(可选),若设为None,则自动为该层命名。 返回: 张量(Tensor) 返回类型: 变量(Variable) **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)