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paddle.fluid / layers / cumsum
cumsum¶
沿给定轴(axis)的元素的累加和。默认结果的第一个元素和输入的第一个元素一致。如果exlusive为True，结果的第一个元素则为0。
- 参数：
-
x (Variable) - 累加的输入，需要进行累加操作的变量Tensor/LoDTensor。
axis (int，可选) - 指明需要累加的维。-1代表最后一维。默认为：-1。
exclusive (bool，可选) - 是否执行exclusive累加。默认为：False。
reverse (bool，可选) - 若为True，则以相反顺序执行累加。默认为：False。
返回：Variable(Tensor)。是累加的结果，即累加器的输出。
返回类型：变量(Variable)。
代码示例：
import paddle.fluid as fluid
data = fluid.layers.data(name="input", shape=[32, 784])
result = fluid.layers.cumsum(data, axis=0)
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