Source code for secretflow.data.math_utils

# Copyright 2022 Ant Group Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import jax.numpy as jnp


def sum_of_difference_squares(y1, y2):
    return jnp.sum(jnp.square((y1 - y2)))


def mean_of_difference_squares(y1, y2):
    return jnp.mean(jnp.square((y1 - y2)))


def sum_of_difference_abs(y1, y2):
    return jnp.sum(jnp.abs((y1 - y2)))


def mean_of_difference_abs(y1, y2):
    return jnp.mean(jnp.abs((y1 - y2)))


def mean_of_difference_ratio_abs(y1, y2):
    return jnp.mean(jnp.abs((y1 - y2) / y1))


def sum_of_difference_ratio_abs(y1, y2):
    return jnp.sum(jnp.abs((y1 - y2) / y1))