TruncatedSVD

scirs2_transform::reduction

Struct TruncatedSVD 

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pub struct TruncatedSVD { /* private fields */ }
Expand description

Truncated Singular Value Decomposition (SVD) for dimensionality reduction

This transformer performs linear dimensionality reduction by means of truncated singular value decomposition (SVD). It works on any data and not just sparse matrices.

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impl TruncatedSVD

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pub fn new(ncomponents: usize) -> Self

Creates a new TruncatedSVD instance

§Arguments
  • n_components - Number of components to keep
§Returns
  • A new TruncatedSVD instance
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pub fn fit<S>(&mut self, x: &ArrayBase<S, Ix2>) -> Result<()>
where S: Data, S::Elem: Float + NumCast,

Fits the TruncatedSVD model to the input data

§Arguments
  • x - The input data, shape (n_samples, n_features)
§Returns
  • Result<()> - Ok if successful, Err otherwise
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pub fn transform<S>(&self, x: &ArrayBase<S, Ix2>) -> Result<Array2<f64>>
where S: Data, S::Elem: Float + NumCast,

Transforms the input data using the fitted TruncatedSVD model

§Arguments
  • x - The input data, shape (n_samples, n_features)
§Returns
  • Result<Array2<f64>> - The transformed data, shape (n_samples, n_components)
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pub fn fit_transform<S>(&mut self, x: &ArrayBase<S, Ix2>) -> Result<Array2<f64>>
where S: Data, S::Elem: Float + NumCast,

Fits the TruncatedSVD model to the input data and transforms it

§Arguments
  • x - The input data, shape (n_samples, n_features)
§Returns
  • Result<Array2<f64>> - The transformed data, shape (n_samples, n_components)
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pub fn components(&self) -> Option<&Array2<f64>>

Returns the components (right singular vectors)

§Returns
  • Option<&Array2<f64>> - The components, shape (n_components, n_features)
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pub fn singular_values(&self) -> Option<&Array1<f64>>

Returns the singular values

§Returns
  • Option<&Array1<f64>> - The singular values
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pub fn explained_variance_ratio(&self) -> Option<&Array1<f64>>

Returns the explained variance ratio

§Returns
  • Option<&Array1<f64>> - The explained variance ratio

Trait Implementations§

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impl Clone for TruncatedSVD

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fn clone(&self) -> TruncatedSVD

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TruncatedSVD

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

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impl<SS, SP> SupersetOf<SS> for SP
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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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fn clone_into(&self, target: &mut T)

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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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fn vzip(self) -> V