Struct linfa_reduction::Pca
source · [−]pub struct Pca<F> { /* private fields */ }
Expand description
Fitted Principal Component Analysis model
The model contains the mean and hyperplane for the projection of data.
Example
use linfa::traits::{Fit, Predict};
use linfa_reduction::Pca;
let dataset = linfa_datasets::iris();
// apply PCA projection along a line which maximizes the spread of the data
let embedding = Pca::params(1)
.fit(&dataset).unwrap();
// reduce dimensionality of the dataset
let dataset = embedding.predict(dataset);
Implementations
sourceimpl Pca<f64>
impl Pca<f64>
sourcepub fn explained_variance(&self) -> Array1<f64>
pub fn explained_variance(&self) -> Array1<f64>
Return the amount of explained variance per element
sourcepub fn explained_variance_ratio(&self) -> Array1<f64>
pub fn explained_variance_ratio(&self) -> Array1<f64>
Return the normalized amount of explained variance per element
sourcepub fn singular_values(&self) -> &Array1<f64>
pub fn singular_values(&self) -> &Array1<f64>
Return the singular values
Trait Implementations
sourceimpl<F: Float, D: Data<Elem = F>> PredictInplace<ArrayBase<D, Dim<[usize; 2]>>, ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>> for Pca<F>
impl<F: Float, D: Data<Elem = F>> PredictInplace<ArrayBase<D, Dim<[usize; 2]>>, ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>> for Pca<F>
sourcefn predict_inplace(&self, records: &ArrayBase<D, Ix2>, targets: &mut Array2<F>)
fn predict_inplace(&self, records: &ArrayBase<D, Ix2>, targets: &mut Array2<F>)
Predict something in place
sourcefn default_target(&self, x: &ArrayBase<D, Ix2>) -> Array2<F>
fn default_target(&self, x: &ArrayBase<D, Ix2>) -> Array2<F>
Create targets that predict_inplace
works with.
sourceimpl<F: Float, D: Data<Elem = F>, T> Transformer<DatasetBase<ArrayBase<D, Dim<[usize; 2]>>, T>, DatasetBase<ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>, T>> for Pca<F>
impl<F: Float, D: Data<Elem = F>, T> Transformer<DatasetBase<ArrayBase<D, Dim<[usize; 2]>>, T>, DatasetBase<ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>, T>> for Pca<F>
fn transform(
&self,
ds: DatasetBase<ArrayBase<D, Ix2>, T>
) -> DatasetBase<Array2<F>, T>
impl<F> StructuralPartialEq for Pca<F>
Auto Trait Implementations
impl<F> RefUnwindSafe for Pca<F> where
F: RefUnwindSafe,
impl<F> Send for Pca<F> where
F: Send,
impl<F> Sync for Pca<F> where
F: Sync,
impl<F> Unpin for Pca<F>
impl<F> UnwindSafe for Pca<F> where
F: RefUnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more