random_selector

Randomly selects a subset of samples from the dataset.

This operator randomly selects a subset of samples based on either a specified ratio or a fixed number. If both select_ratio and select_num are provided, the one that results in fewer samples is used. The selection is skipped if the dataset has only one or no samples. The random_sample function is used to perform the actual sampling.

  • select_ratio: The ratio of samples to select (0 to 1).

  • select_num: The exact number of samples to select.

  • If neither select_ratio nor select_num is set, the dataset remains unchanged.

从数据集中随机选择一部分样本。

该算子根据指定的比例或固定数量随机选择一部分样本。如果同时提供了 select_ratio 和 select_num，则使用导致样本数量较少的那个。如果数据集中只有一个或没有样本，则跳过选择。实际采样使用 random_sample 函数执行。

  • select_ratio：要选择的样本比例（0 到 1）。

  • select_num：要选择的确切样本数量。

  • 如果既未设置 select_ratio 也未设置 select_num，则数据集保持不变。

Type 算子类型: selector

Tags 标签: cpu

🔧 Parameter Configuration 参数配置

name 参数名

type 类型

default 默认值

desc 说明

select_ratio

typing.Optional[typing.Annotated[float, FieldInfo(annotation=NoneType, required=True, metadata=[Ge(ge=0), Le(le=1)])]]

None

The ratio to select. When both

select_num

typing.Optional[typing.Annotated[int, Gt(gt=0)]]

None

The number of samples to select. When both

args

''

extra args

kwargs

''

extra args

📊 Effect demonstration 效果演示

not available 暂无