# Ptn MSE Loss
A class to compute the squared loss.

    Args:  
        reduction: (str): Reduction method.  
                          `none`: no reduction will be applied done.   
                          `sum`: computes the sum.  
                          `mean`: computes the mean.

## Input
| Name | Data type |
|---|---|
| reduction |  |

## Output
| Data type |
|---|
| Ptloss |

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Category: PyTorch wrapper - Loss function

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