PorterStemmer 是否支持英语以外的语言？
Does PorterStemmer supports languages other than english?
Snowball stemmer 支持除英语以外的多种语言，但 porter 也支持吗？
PorterStemmer 用于英语。然而，作者 Porter 本人将他的作品 Snowball 扩展到英语和其他语言。这是许多人将 SnowBall 用于其他语言的原因之一。
引用自维基百科：
Many implementations of the Porter stemming algorithm were written and freely distributed; however, many of these implementations
contained subtle flaws. As a result, these stemmers did not match
their potential. To eliminate this source of error, Martin Porter
released an official free software (mostly BSD-licensed)
implementation of the algorithm around the year 2000. He extended this
work over the next few years by building Snowball, a framework for
writing stemming algorithms, and implemented an improved English
stemmer together with stemmers for several other languages.
Snowball stemmer 支持除英语以外的多种语言，但 porter 也支持吗？
PorterStemmer 用于英语。然而，作者 Porter 本人将他的作品 Snowball 扩展到英语和其他语言。这是许多人将 SnowBall 用于其他语言的原因之一。
引用自维基百科：
Many implementations of the Porter stemming algorithm were written and freely distributed; however, many of these implementations contained subtle flaws. As a result, these stemmers did not match their potential. To eliminate this source of error, Martin Porter released an official free software (mostly BSD-licensed) implementation of the algorithm around the year 2000. He extended this work over the next few years by building Snowball, a framework for writing stemming algorithms, and implemented an improved English stemmer together with stemmers for several other languages.