@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
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JavaScript
/**
* @license
* Copyright 2020 Google LLC. 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.
* =============================================================================
*/
import { Cumsum } from '../kernel_names';
import { getAxesPermutation } from '../ops/axis_util';
import { cumsum } from '../ops/cumsum';
import { transpose } from '../ops/transpose';
export const cumsumGradConfig = {
kernelName: Cumsum,
inputsToSave: ['x'],
gradFunc: (dy, saved, attrs) => {
const [x] = saved;
const { axis, exclusive, reverse } = attrs;
return {
x: () => {
const permutation = getAxesPermutation([axis], x.rank);
let out = cumsum(dy, axis, exclusive, !reverse);
if (permutation != null) {
out = transpose(out, permutation);
}
return out;
}
};
}
};
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