/**
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* @license
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* Copyright 2020 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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import {abs, KernelConfig, Prelu, PreluInputs, relu, Tensor, tidy} from '@tensorflow/tfjs';
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export const preluConfig: KernelConfig = {
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kernelName: Prelu,
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backendName: 'tensorflow',
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kernelFunc: (args) => {
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const inputs = args.inputs as PreluInputs;
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const x = inputs.x as Tensor;
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const alpha = inputs.alpha as Tensor;
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return tidy(() => {
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const pos = relu(x);
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const neg = alpha.mul(x.sub(abs(x))).mul(0.5);
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return pos.add(neg);
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});
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}
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};
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