gx

chenyc

2025-06-12 7b72ac13a83764a662159d4a49b7fffb90476ecb

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/**
 * @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 { Max } from '../kernel_names';
import * as util from '../util';
import { gradForMinAndMax } from './min_max_grad_util';
export const maxGradConfig = {
    kernelName: Max,
    inputsToSave: ['x'],
    outputsToSave: [true],
    gradFunc: (dy, saved, attrs) => {
        const maxAttrs = attrs;
        const { reductionIndices } = maxAttrs;
        const x = saved[0];
        const y = saved[1];
        const origAxes = util.parseAxisParam(reductionIndices, x.shape);
        const maxGrad = gradForMinAndMax(dy, y, x, origAxes);
        return {
            x: () => {
                return maxGrad['x']();
            }
        };
    }
};
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