Struct FittedComplementNB 

pub struct FittedComplementNB<F> { /* private fields */ }

Fitted Complement Naive Bayes classifier.

Implementations

impl<F: Float + Send + Sync + 'static> FittedComplementNB<F>

pub fn partial_fit( &mut self, x: &Array2<F>, y: &Array1<usize>, ) -> Result<(), FerroError>

Incrementally update the model with new data.

Accumulates feature counts and class counts, then recomputes the complement weights.

Errors

• FerroError::ShapeMismatch if x and y have different row counts or the number of features does not match the fitted model.
• FerroError::InvalidParameter if any feature value is negative.

pub fn predict_proba(&self, x: &Array2<F>) -> Result<Array2<F>, FerroError>

Predict class probabilities for the given feature matrix.

Converts complement scores (lower=better) to probabilities by negating and applying softmax.

Returns shape (n_samples, n_classes) where each row sums to 1.

Errors

Returns FerroError::ShapeMismatch if the number of features does not match the fitted model.

Trait Implementations

impl<F: Clone> Clone for FittedComplementNB<F>

fn clone(&self) -> FittedComplementNB<F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<F: Debug> Debug for FittedComplementNB<F>

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

Formats the value using the given formatter.

impl<F: Float + Send + Sync + 'static> HasClasses for FittedComplementNB<F>

fn classes(&self) -> &[usize]

Returns the sorted list of unique class labels.

fn n_classes(&self) -> usize

Returns the number of distinct classes.

impl<F: Float + Send + Sync + 'static> Predict<ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>> for FittedComplementNB<F>

fn predict(&self, x: &Array2<F>) -> Result<Array1<usize>, FerroError>

Predict class labels for the given feature matrix.

Predicts the class with the lowest complement score.

Errors

Returns FerroError::ShapeMismatch if the number of features does not match the fitted model.

type Output = ArrayBase<OwnedRepr<usize>, Dim<[usize; 1]>>

The prediction output type (e.g., ndarray::Array1<F> or ndarray::Array1<usize>).

type Error = FerroError

The error type returned by predict.