ray.data.Dataset.random_sample#

Dataset.random_sample(fraction: float, *, seed: int | None = None) → Dataset[source]#

Returns a new Dataset containing a random fraction of the rows.

Note

This method returns roughly fraction * total_rows rows. An exact number of rows isn’t guaranteed.

Examples

>>> import ray
>>> ds = ray.data.range(100)
>>> ds.random_sample(0.1).count()  
10
Parameters:

  • fraction – The fraction of elements to sample.

  • seed – Seeds the python random pRNG generator.

Returns:

Returns a Dataset containing the sampled rows.