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# porterStemmer

> Extract the stem of a given word.

<section class="intro">

</section>

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<section class="usage">

## Usage

```javascript
var porterStemmer = require( '@stdlib/nlp/porter-stemmer' );
```

#### porterStemmer( word )

Extracts the stem of a given word using the Porter stemming algorithm.

```javascript
var out = porterStemmer( 'worldwide' );
// returns 'worldwid'

out = porterStemmer( 'fighting' );
// returns 'fight'
```

</section>

<!-- /.usage -->

* * *

<section class="references">

## References

-   Porter, Michael F. 1980. "An algorithm for suffix stripping." _Program_ 13 (3): 130–37. doi:[10.1108/eb046814][@porter:1980].

</section>

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<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var porterStemmer = require( '@stdlib/nlp/porter-stemmer' );

var out = porterStemmer( 'walking' );
// returns 'walk'

out = porterStemmer( 'walked' );
// returns 'walk'

out = porterStemmer( 'walks' );
// returns 'walk'

out = porterStemmer( '' );
// returns ''
```

</section>

<!-- /.examples -->

<section class="links">

[@porter:1980]: https://doi.org/10.1108/eb046814

</section>

<!-- /.links -->