pub struct FittedTfIdfVectorizer { /* private fields */ }
Expand description
Counts the occurrences of each vocabulary entry, learned during fitting, in a sequence of texts and scales them by the inverse document document frequency defined by the method. Each vocabulary entry is mapped to an integer value that is used to index the count in the result.
Implementations§
source§impl FittedTfIdfVectorizer
impl FittedTfIdfVectorizer
sourcepub fn vocabulary(&self) -> &Vec<String>
pub fn vocabulary(&self) -> &Vec<String>
Constains all vocabulary entries, in the same order used by the transform
method.
sourcepub fn method(&self) -> &TfIdfMethod
pub fn method(&self) -> &TfIdfMethod
Returns the inverse document frequency method used in the tansform method
sourcepub fn transform<T: ToString, D: Data<Elem = T>>(
&self,
x: &ArrayBase<D, Ix1>
) -> CsMat<f64>
pub fn transform<T: ToString, D: Data<Elem = T>>( &self, x: &ArrayBase<D, Ix1> ) -> CsMat<f64>
Given a sequence of n
documents, produces an array of size (n, vocabulary_entries)
where column j
of row i
is the number of occurrences of vocabulary entry j
in the text of index i
, scaled by the inverse document frequency.
Vocabulary entry j
is the string at the j
-th position in the vocabulary.
pub fn transform_files<P: AsRef<Path>>( &self, input: &[P], encoding: EncodingRef, trap: DecoderTrap ) -> CsMat<f64>
Trait Implementations§
source§impl Clone for FittedTfIdfVectorizer
impl Clone for FittedTfIdfVectorizer
source§fn clone(&self) -> FittedTfIdfVectorizer
fn clone(&self) -> FittedTfIdfVectorizer
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreAuto Trait Implementations§
impl !RefUnwindSafe for FittedTfIdfVectorizer
impl Send for FittedTfIdfVectorizer
impl !Sync for FittedTfIdfVectorizer
impl Unpin for FittedTfIdfVectorizer
impl UnwindSafe for FittedTfIdfVectorizer
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more