f0nzie
9/7/2017 - 1:05 AM

L2 loss function

loss_L2.py
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def L2(yhat, y):
    """
    Arguments:
    yhat -- vector of size m (predicted labels)
    y -- vector of size m (true labels)
    
    Returns:
    loss -- the value of the L2 loss function defined above
    """
    
    loss = np.sum((y - yhat)**2)
    
    return loss