Struct SparseTable 

pub struct SparseTable { /* private fields */ }

Arrow-backed sparse table specialized for binary feature matrices.

This is intentionally specialized to binary data. The sparse path is mainly about avoiding the memory cost of materializing dense one-hot-like matrices.

Implementations

impl SparseTable

pub fn new(x: Vec<Vec<f64>>, y: Vec<f64>) -> Result<Self, DenseTableError>

pub fn with_canaries( x: Vec<Vec<f64>>, y: Vec<f64>, canaries: usize, ) -> Result<Self, DenseTableError>

pub fn with_options( x: Vec<Vec<f64>>, y: Vec<f64>, canaries: usize, numeric_bins: NumericBins, ) -> Result<Self, DenseTableError>

pub fn from_sparse_binary_columns( n_rows: usize, n_features: usize, columns: Vec<Vec<usize>>, y: Vec<f64>, canaries: usize, ) -> Result<Self, DenseTableError>

pub fn from_sparse_binary_columns_with_options( n_rows: usize, n_features: usize, columns: Vec<Vec<usize>>, y: Vec<f64>, canaries: usize, numeric_bins: NumericBins, ) -> Result<Self, DenseTableError>

pub fn n_rows(&self) -> usize

pub fn n_features(&self) -> usize

pub fn canaries(&self) -> usize

pub fn numeric_bin_cap(&self) -> usize

pub fn binned_feature_count(&self) -> usize

pub fn feature_value(&self, feature_index: usize, row_index: usize) -> f64

pub fn is_missing(&self, _feature_index: usize, _row_index: usize) -> bool

pub fn is_binary_feature(&self, _index: usize) -> bool

pub fn binned_value(&self, feature_index: usize, row_index: usize) -> u16

pub fn binned_boolean_value( &self, feature_index: usize, row_index: usize, ) -> Option<bool>

pub fn binned_column_kind(&self, index: usize) -> BinnedColumnKind

pub fn is_canary_binned_feature(&self, index: usize) -> bool

pub fn is_binary_binned_feature(&self, _index: usize) -> bool

pub fn target(&self) -> &Float64Array

Trait Implementations

impl Clone for SparseTable

fn clone(&self) -> SparseTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseTable

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

Formats the value using the given formatter.

impl TableAccess for SparseTable

fn n_rows(&self) -> usize

fn n_features(&self) -> usize

fn canaries(&self) -> usize

fn numeric_bin_cap(&self) -> usize

fn binned_feature_count(&self) -> usize

fn feature_value(&self, feature_index: usize, row_index: usize) -> f64

fn is_missing(&self, feature_index: usize, row_index: usize) -> bool

fn is_binary_feature(&self, index: usize) -> bool

fn binned_value(&self, feature_index: usize, row_index: usize) -> u16

fn binned_boolean_value( &self, feature_index: usize, row_index: usize, ) -> Option<bool>

fn binned_column_kind(&self, index: usize) -> BinnedColumnKind

fn is_binary_binned_feature(&self, index: usize) -> bool

fn target_value(&self, row_index: usize) -> f64

fn is_canary_binned_feature(&self, index: usize) -> bool