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.IX Title "Text::English 3pm"
.TH Text::English 3pm "2021-01-01" "perl v5.32.0" "User Contributed Perl Documentation"
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.SH "NAME"
Text::English \- Porter's stemming algorithm
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    use Text::English;
\&    @stems = Text::English::stem( @words );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This routine applies the Porter Stemming Algorithm to its parameters,
returning the stemmed words.
It is derived from the C program \*(L"stemmer.c\*(R"
as found in freewais and elsewhere, which contains these notes:
.PP
.Vb 4
\&   Purpose:    Implementation of the Porter stemming algorithm documented 
\&               in: Porter, M.F., "An Algorithm For Suffix Stripping," 
\&               Program 14 (3), July 1980, pp. 130\-137.
\&   Provenance: Written by B. Frakes and C. Cox, 1986.
.Ve
.PP
I have re-interpreted areas that use Frakes and Cox's \*(L"WordSize\*(R"
function. My version may misbehave on short words starting with \*(L"y\*(R",
but I can't think of any examples.
.PP
The step numbers correspond to Frakes and Cox, and are probably in
Porter's article (which I've not seen).
Porter's algorithm still has rough spots (e.g current/currency, \-ings words),
which I've not attempted to cure, although I have added
support for the British \-ise suffix.
.SH "NOTES"
.IX Header "NOTES"
This is version 0.1. I would welcome feedback, especially improvements
to the punctuation-stripping step.
.SH "AUTHOR"
.IX Header "AUTHOR"
Ian Phillipps <ian@unipalm.pipex.com>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright Public \s-1IP\s0 Exchange Ltd (\s-1PIPEX\s0).
Available for use under the same terms as perl.