forked from 626_privacy/tensorflow_privacy
35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
|
|
#
|
|
# 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
|
|
#
|
|
# http://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.
|
|
# ==============================================================================
|
|
|
|
|
|
def batch_indices(batch_nb, data_length, batch_size):
|
|
"""
|
|
This helper function computes a batch start and end index
|
|
:param batch_nb: the batch number
|
|
:param data_length: the total length of the data being parsed by batches
|
|
:param batch_size: the number of inputs in each batch
|
|
:return: pair of (start, end) indices
|
|
"""
|
|
# Batch start and end index
|
|
start = int(batch_nb * batch_size)
|
|
end = int((batch_nb + 1) * batch_size)
|
|
|
|
# When there are not enough inputs left, we reuse some to complete the batch
|
|
if end > data_length:
|
|
shift = end - data_length
|
|
start -= shift
|
|
end -= shift
|
|
|
|
return start, end
|