[ 源代码： perlindex ]
软件包：libtext-english-perl（1.606-5）
Perl module implementing the Porter Stemming algorithm
libtext-english-perl implements the Porter Stemming algorithm in pure Perl.
The Porter stemming algorithm is a process for removing the commoner morphological and inflexional endings from words in English. Its main use is as part of a term normalisation process that is usually done when setting up Information Retrieval systems.