2021-12-02 20:06:28 +08:00
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mindspore.dataset.SubsetSampler
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2021-11-27 16:09:05 +08:00
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====================================
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.. py:class:: mindspore.dataset.SubsetSampler(indices, num_samples=None)
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2021-11-23 15:00:48 +08:00
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对索引序列中的元素进行采样。
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2021-11-27 16:09:05 +08:00
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**参数：**
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2021-11-29 11:48:18 +08:00
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- **indices** (Any iterable Python object but string): 索引的序列。
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- **num_samples** (int, optional): 要采样的元素数量（默认值为None，采样所有元素）。
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2021-11-27 16:09:05 +08:00
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**样例：**
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>>> indices = [0, 1, 2, 3, 4, 5]
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>>>
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>>> # 创建SubsetSampler，从提供的索引采样
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>>> sampler = ds.SubsetSampler(indices)
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>>> dataset = ds.ImageFolderDataset(image_folder_dataset_dir,
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... num_parallel_workers=8,
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... sampler=sampler)
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**异常：**
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- **TypeError：** 索引元素的类型不是数字。
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- **TypeError：** `num_samples` 不是整数值。
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- **ValueError：** `num_samples` 为负值。
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2021-11-23 15:00:48 +08:00
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.. include:: mindspore.dataset.BuiltinSampler.rst
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