Struct MnistDataset 

pub struct MnistDataset { /* private fields */ }

MNIST handwritten digits dataset

Implementations

impl MnistDataset

pub fn load() -> Result<Self>

Load embedded MNIST sample

Errors

Returns an error if construction fails.

pub fn load_full() -> Result<Self>

Load full MNIST from HuggingFace Hub (requires hf-hub feature)

pub fn split(&self) -> Result<DatasetSplit>

Get stratified train/test split (80/20 for embedded data)

Uses stratified sampling to ensure all digit classes (0-9) are represented in both train and test sets with proportional distribution.

Errors

Returns an error if the dataset is empty or split fails.

Trait Implementations

impl CanonicalDataset for MnistDataset

fn data(&self) -> &ArrowDataset

Returns the full dataset

fn num_features(&self) -> usize

Returns the number of features (excluding label)

fn num_classes(&self) -> usize

Returns the number of classes (for classification datasets)

fn feature_names(&self) -> &'static [&'static str]

Returns the feature column names

fn target_name(&self) -> &'static str

Returns the label/target column name

fn description(&self) -> &'static str

Returns a description of the dataset

fn len(&self) -> usize

Returns the number of samples

fn is_empty(&self) -> bool

Returns true if the dataset is empty

impl Clone for MnistDataset

fn clone(&self) -> MnistDataset

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MnistDataset

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.