/**
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* @license
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* Copyright 2018 Google LLC
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*
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* Use of this source code is governed by an MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT.
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* =============================================================================
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*/
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/// <amd-module name="@tensorflow/tfjs-layers/dist/engine/dataset_fakes" />
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import * as tfc from '@tensorflow/tfjs-core';
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import { Shape } from '../keras_format/common';
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import { TensorOrArrayOrMap } from '../types';
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import { Dataset, LazyIterator } from './dataset_stub';
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import { FitDatasetElement } from './training_dataset';
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export interface FakeDatasetArgs {
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/**
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* The shape(s) of the features of a single example.
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*
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* Use an object mapping name to shape, if more than one feature tensors
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* are required.
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*/
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xShape: Shape | {
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[name: string]: Shape;
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};
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/**
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* The shape of the target(s) of a single exapmle.
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*/
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yShape: Shape | {
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[name: string]: Shape;
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};
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/**
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* A function that generates preset sequence of X tensors.
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*
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* This function is invoked each time a new iterator is created.
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*/
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xTensorsFunc?: () => tfc.Tensor[] | {
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[name: string]: tfc.Tensor[];
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};
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/**
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* A function that generates preset sequence of Y tensors.
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*
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* This function is invoked each time a new iterator is created.
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*/
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yTensorsFunc?: () => tfc.Tensor[] | {
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[name: string]: tfc.Tensor[];
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};
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/**
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* The size of each batch generated by the iterator.
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*/
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batchSize: number;
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/**
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* The number of batches an iterator generates before declaring done to be
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* true.
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*/
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numBatches: number;
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}
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/**
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* A fake dataset with configurable feature and target shapes.
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*
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* The batch size and # of batches are also configurable.
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*
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* The iterator from the dataset always generate random-normal float32 values.
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*/
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export declare class FakeNumericDataset extends Dataset<FitDatasetElement> {
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readonly args: FakeDatasetArgs;
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constructor(args: FakeDatasetArgs);
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iterator(): Promise<LazyIterator<FitDatasetElement>>;
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}
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export declare class FakeNumericDatasetLegacyArrayForm extends Dataset<[TensorOrArrayOrMap, TensorOrArrayOrMap]> {
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readonly args: FakeDatasetArgs;
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ds: FakeNumericDataset;
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constructor(args: FakeDatasetArgs);
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iterator(): Promise<LazyIterator<[TensorOrArrayOrMap, TensorOrArrayOrMap]>>;
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}
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