Function random_subset 

pub fn random_subset(
    dataset_size: usize,
    num_samples: usize,
    seed: Option<u64>,
) -> RandomSampler

Create a random subset sampler

Convenience function for creating a random sampler that yields a subset of indices without replacement.

Arguments

• dataset_size - Number of samples in the dataset
• num_samples - Number of samples to yield
• seed - Optional random seed for reproducible sampling