Source code for secretflow.security.compare.spu_comparator
# 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.
from secretflow.device import SPU
from secretflow.security.compare.device_comparator import DeviceComparator
[docs]class SPUComparator(DeviceComparator):
"""Compartator based on SPU.
The computation will be performed on the given SPU device.
Examples:
>>> import numpy as np
# Alice and bob are both pyu instances.
>>> a = alice(lambda : np.random.rand(2, 5))()
>>> b = bob(lambda : np.random.rand(2, 5))()
>>> comparator = SPUComparator(alice)
>>> min_a_b = comparator.min([a, b], axis=0)
>>> sf.reveal(min_a_b)
array([[0.47092903, 0.77865475, 0.05917433, 0.07155096, 0.16089967],
[0.56598 , 0.51047045, 0.35771865, 0.23004009, 0.23400909]],
dtype=float32)
>>> max_a_b = comparator.max([a, b], axis=0)
>>> sf.reveal(max_a_b)
array([[0.5939065 , 0.8463326 , 0.14722177, 0.9977698 , 0.6186677 ],
[0.65607053, 0.611439 , 0.957074 , 0.6548823 , 0.445968 ]],
dtype=float32)
"""
def __post_init__(self):
assert isinstance(
self.device, SPU
), f'Accepts SPU only but got {type(self.device)}.'