f9dd1ba1fcff2fed44153fd75cbcf65e6ccee1af,paysage/backends/pytorch_backend/nonlinearity.py,,acosh,#Any#,44

Before Change

    raise NotImplementedError

def acosh(x):
    raise NotImplementedError

def logit(x):
    raise NotImplementedError

After Change

    return -LOG2 + logaddexp(-x, x)

def acosh(x):
    y = matrix.clip(x, a_min=EPSILON, a_max = 1 - EPSILON)
    return sqrt((y-1)/(1-y)) * torch.acos(x)

def logit(x):
    y = matrix.clip(x, a_min=EPSILON, a_max = 1 - EPSILON)
    return torch.log(y / (1 - y))

Instances