Struct ConfusionMatrix 

pub struct ConfusionMatrix {
    pub matrix: Vec<Vec<u64>>,
    pub n_classes: usize,
}

NxN confusion matrix. Entry [i][j] = count of samples with true class i predicted as class j.

Fields

matrix: Vec<Vec<u64>>

n_classes: usize

Implementations

impl ConfusionMatrix

pub fn from_predictions( predictions: &[usize], targets: &[usize], n_classes: usize, ) -> ConfusionMatrix

Build a confusion matrix from predicted and true class indices.

pub fn tp(&self, c: usize) -> u64

True positives for class c.

pub fn fp(&self, c: usize) -> u64

False positives for class c (predicted c but was not c).

pub fn fn_(&self, c: usize) -> u64

False negatives for class c (was c but predicted other).

pub fn tn(&self, c: usize) -> u64

True negatives for class c.

pub fn support(&self, c: usize) -> u64

Support (number of true instances) for class c.

pub fn total(&self) -> u64

Total number of samples.

pub fn to_string_table(&self) -> String

Pretty-print the confusion matrix.

Trait Implementations

impl Clone for ConfusionMatrix

fn clone(&self) -> ConfusionMatrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConfusionMatrix

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

Formats the value using the given formatter.