@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 { Concat } from '../kernel_names';
import { split } from '../ops/split';
import { parseAxisParam } from '../util';
export const concatGradConfig = {
kernelName: Concat,
saveAllInputs: true,
gradFunc: (dy, saved, attrs) => {
const shapes = saved.map(t => t.shape);
const { axis } = attrs;
const $axis = parseAxisParam(axis, saved[0].shape)[0];
const sizeSplits = shapes.map(s => s[$axis]);
const derTensors = split(dy, sizeSplits, $axis);
return derTensors.map(t => () => t);
}
};
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