Lucene的StopFilter默认使用哪些停用词列表？

Question

Lucene有一个默认的停用词过滤器 (http://lucene.apache.org/core/4_0_0/analyzers-common/org/apache/lucene/analysis/core/StopFilter.html)，有人知道列表中有哪些单词吗？

- alvas

Answer 1

StandardAnalyzer和EnglishAnalyzer中默认的停用词集来自于StopAnalyzer.ENGLISH_STOP_WORDS_SET，在源文件中可以找到相关信息。

"a", "an", "and", "are", "as", "at", "be", "but", "by",
"for", "if", "in", "into", "is", "it",
"no", "not", "of", "on", "or", "such",
"that", "the", "their", "then", "there", "these",
"they", "this", "to", "was", "will", "with"

StopFilter本身没有定义默认的停用词集。

- femtoRgon

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我正在使用 Lucene 5.5.0 进行关键词提取。我使用 tokenStream = new StopFilter(new ClassicFilter(new LowerCaseFilter(stdToken)), StopAnalyzer.ENGLISH_STOP_WORDS_SET); 指定停用词过滤器，但是 Lucene 并没有过滤停用词。我是否遗漏了什么？ - Mike