/**
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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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/// <amd-module name="@tensorflow/tfjs-core/dist/ops/avg_pool_grad" />
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import { Tensor3D, Tensor4D } from '../tensor';
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import { TensorLike } from '../types';
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import { ExplicitPadding } from './conv_util';
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/**
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* Computes the backprop of an 2D avg pool.
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*
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* @param dy The dy error, of rank 4 or rank 3 of shape
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* [batchSize, height, width, channels]. If rank 3, batch of 1 is
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* assumed.
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* @param input The input image, of rank 4 or rank 3 of shape
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* [batchSize, height, width, channels]. If rank 3, batch of 1 is
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* assumed.
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* @param filterSize The filter size: `[filterHeight, filterWidth]`. If
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* `filterSize` is a single number, then `filterHeight == filterWidth`.
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* @param strides The strides of the pooling: `[strideHeight, strideWidth]`. If
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* `strides` is a single number, then `strideHeight == strideWidth`.
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* @param pad The type of padding algorithm used in the forward prop of the op.
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* 'same', 'valid', for more info, see this guide:
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* [https://www.tensorflow.org/api_docs/python/tf/nn/convolution](
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* https://www.tensorflow.org/api_docs/python/tf/nn/convolution)
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*/
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declare function avgPoolGrad_<T extends Tensor3D | Tensor4D>(dy: T | TensorLike, input: T | TensorLike, filterSize: [number, number] | number, strides: [number, number] | number, pad: 'valid' | 'same' | number | ExplicitPadding): T;
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export declare const avgPoolGrad: typeof avgPoolGrad_;
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export {};
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