Struct SparseArffData 

pub struct SparseArffData {
    pub relation: String,
    pub attributes: Vec<(String, AttributeType)>,
    pub instances: Vec<SparseInstance>,
}

Sparse ARFF dataset

Fields

relation: String

Relation name

attributes: Vec<(String, AttributeType)>

Attributes

instances: Vec<SparseInstance>

Sparse instances

Implementations

impl SparseArffData

pub fn new( relation: impl Into<String>, attributes: Vec<(String, AttributeType)>, ) -> Self

Create a new empty sparse ARFF dataset

pub fn add_instance(&mut self, instance: SparseInstance)

Add a sparse instance

pub fn num_instances(&self) -> usize

Number of instances

pub fn num_attributes(&self) -> usize

Number of attributes

pub fn total_nnz(&self) -> usize

Get the total number of non-default values across all instances

pub fn sparsity(&self) -> f64

Get the sparsity ratio (fraction of default values)

pub fn to_dense(&self) -> ArffData

Convert to dense ArffData

pub fn from_dense(dense: &ArffData) -> Self

Convert from dense ArffData to sparse

Trait Implementations

impl Clone for SparseArffData

fn clone(&self) -> SparseArffData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseArffData

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

Formats the value using the given formatter.