Source code for

# Copyright (c) 2017-2019 Uber Technologies, Inc.
# SPDX-License-Identifier: Apache-2.0

from import Parameterized

[docs]class Likelihood(Parameterized): """ Base class for likelihoods used in Gaussian Process. Every inherited class should implement a forward pass which takes an input :math:`f` and returns a sample :math:`y`. """ def __init__(self): super().__init__()
[docs] def forward(self, f_loc, f_var, y=None): """ Samples :math:`y` given :math:`f_{loc}`, :math:`f_{var}`. :param torch.Tensor f_loc: Mean of latent function output. :param torch.Tensor f_var: Variance of latent function output. :param torch.Tensor y: Training output tensor. :returns: a tensor sampled from likelihood :rtype: torch.Tensor """ raise NotImplementedError