turicreate.SArray.random_split

SArray.random_split(fraction, seed=None)

Randomly split the rows of an SArray into two SArrays. The first SArray contains M rows, sampled uniformly (without replacement) from the original SArray. M is approximately the fraction times the original number of rows. The second SArray contains the remaining rows of the original SArray.

Parameters:

fraction : float

Approximate fraction of the rows to fetch for the first returned SArray. Must be between 0 and 1.

seed : int, optional

Seed for the random number generator used to split.

Returns:

out : tuple [SArray]

Two new SArrays.

Examples

Suppose we have an SArray with 1,024 rows and we want to randomly split it into training and testing datasets with about a 90%/10% split.

>>> sa = turicreate.SArray(range(1024))
>>> sa_train, sa_test = sa.random_split(.9, seed=5)
>>> print(len(sa_train), len(sa_test))
922 102