@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 { BatchMatMul } from '../kernel_names';
import { matMul } from '../ops/mat_mul';
export const batchMatMulGradConfig = {
kernelName: BatchMatMul,
inputsToSave: ['a', 'b'],
gradFunc: (dy, saved, attrs) => {
const [a, b] = saved;
const { transposeA, transposeB } = attrs;
if (!transposeA && !transposeB) {
return {
a: () => matMul(dy, b, false, true),
b: () => matMul(a, dy, true, false)
};
}
else if (!transposeA && transposeB) {
return {
a: () => matMul(dy, b, false, false),
b: () => matMul(dy, a, true, false)
};
}
else if (transposeA && !transposeB) {
return {
a: () => matMul(b, dy, false, true),
b: () => matMul(a, dy, false, false)
};
}
else {
return {
a: () => matMul(b, dy, true, true),
b: () => matMul(dy, a, true, true)
};
}
}
};
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