Struct StemmerFilter

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pub struct StemmerFilter { /* private fields */ }

Expand description

Reduces tokens to their word stems using the Snowball algorithm.

Stemming maps morphological variants to a common root (e.g., “running” → “run”, “cats” → “cat”). This improves recall at the cost of some precision.

Supports 17+ languages via the Snowball stemming algorithms.

See [[analyzers#Token Filters]] and Snowball.

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impl StemmerFilter

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pub fn new(algorithm: Algorithm) -> Self

Create a stemmer filter for the given language.

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pub fn english() -> Self

Create an English stemmer filter.

Trait Implementations§

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impl TokenFilter for StemmerFilter

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fn apply(&self, tokens: &mut Vec<Token>)

Apply the filter to tokens, modifying in place.

Auto Trait Implementations§

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impl UnwindSafe for StemmerFilter

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