Struct linfa::dataset::CountedTargets

pub struct CountedTargets<L: Label, P> { /* fields omitted */ }

Targets with precomputed, counted labels

This extends plain targets with pre-counted labels. The label map is useful when, for example, a prior probability is estimated (e.g. in Naive Bayesian implementation) or the samples are weighted inverse to their occurence.

Fields

• targets: wrapped target field
• labels: counted labels with label-count association

Implementations

impl<L: Label, S: Labels<Elem = L>> CountedTargets<L, S>

pub fn new(targets: S) -> Self

Trait Implementations

impl<L: Label, T: AsTargets<Elem = L>> AsTargets for CountedTargets<L, T>

type Elem = L

fn as_multi_targets(&self) -> ArrayView2<'_, L>

Returns a view on targets as two-dimensional array

fn try_single_target(&self) -> Result<ArrayView1<'_, Self::Elem>>

Convert to single target, fails for more than one target

impl<L: Label, T: AsTargetsMut<Elem = L>> AsTargetsMut for CountedTargets<L, T>

type Elem = L

fn as_multi_targets_mut(&mut self) -> ArrayViewMut2<'_, Self::Elem>

Returns a mutable view on targets as two-dimensional array

fn try_single_target_mut(&mut self) -> Result<ArrayViewMut1<'_, Self::Elem>>

Convert to single target, fails for more than one target

impl<'a, L: Label + 'a, T> FromTargetArray<'a, L> for CountedTargets<L, T> where
    T: AsTargets<Elem = L> + FromTargetArray<'a, L>,
    T::Owned: Labels<Elem = L>,
    T::View: Labels<Elem = L>, 

type Owned = CountedTargets<L, T::Owned>

type View = CountedTargets<L, T::View>

fn new_targets(targets: Array2<L>) -> Self::Owned

Create self object from new target array

fn new_targets_view(targets: ArrayView2<'a, L>) -> Self::View