@tensorflow/tfjs-core
Version:
Hardware-accelerated JavaScript library for machine intelligence
31 lines • 3.97 kB
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 { Relu6 } from '../kernel_names';
import { cast } from '../ops/cast';
import { lessEqual } from '../ops/less_equal';
import { mul } from '../ops/mul';
import { step } from '../ops/step';
export const relu6GradConfig = {
kernelName: Relu6,
inputsToSave: ['x'],
gradFunc: (dy, saved) => {
const [x] = saved;
const mask = mul(lessEqual(x, 6), step(x));
return { x: () => mul(dy, cast(mask, 'float32')) };
}
};
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