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---
title: Power Layer
---
# Power Layer
* Layer type: `Power`
* [Doxygen Documentation](http://caffe.berkeleyvision.org/doxygen/classcaffe_1_1PowerLayer.html)
* Header: [`./include/caffe/layers/power_layer.hpp`](https://github.com/BVLC/caffe/blob/master/include/caffe/layers/power_layer.hpp)
* CPU implementation: [`./src/caffe/layers/power_layer.cpp`](https://github.com/BVLC/caffe/blob/master/src/caffe/layers/power_layer.cpp)
* CUDA GPU implementation: [`./src/caffe/layers/power_layer.cu`](https://github.com/BVLC/caffe/blob/master/src/caffe/layers/power_layer.cu)
The `Power` layer computes the output as (shift + scale * x) ^ power for each input element x.
## Parameters
* Parameters (`PowerParameter power_param`)
- Optional
- `power` [default 1]
- `scale` [default 1]
- `shift` [default 0]
* From [`./src/caffe/proto/caffe.proto`](https://github.com/BVLC/caffe/blob/master/src/caffe/proto/caffe.proto):
{% highlight Protobuf %}
{% include proto/PowerParameter.txt %}
{% endhighlight %}
## Sample
layer {
name: "layer"
bottom: "in"
top: "out"
type: "Power"
power_param {
power: 1
scale: 1
shift: 0
}
}
## See also
* [Exponential layer](exp.html)
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