Trait Idf 

pub trait Idf<T>
where
    T: NaiveDocument,
{
    // Required method
    fn idf<'a, I, K>(term: K, docs: I) -> f64
       where I: Iterator<Item = &'a T>,
             K: Borrow<T::Term>,
             T: 'a;
}

A strategy to calculate a weighted or unweighted inverse document frequency (idf) for a single term within a corpus of documents.

Required Methods

fn idf<'a, I, K>(term: K, docs: I) -> f64

where I: Iterator<Item = &'a T>, K: Borrow<T::Term>, T: 'a,

Returns the weighted or unweighted inverse document frequency (idf) for a single term within a corpus of documents.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<'l, T, E> Idf<T> for InverseFrequencyMaxIdf

where T: ProcessedDocument<Term = E> + ExpandableDocument<'l>, E: Hash + Eq + 'l,

impl<S, T> Idf<T> for S

where S: InverseFrequencySmoothedIdfStrategy, T: NaiveDocument,

impl<T> Idf<T> for UnaryIdf

where T: NaiveDocument,