lucene-2.9.0-src.zip search engine source code. Of a full-text search engine should say " can match a dictionary word, extract keywords," rather than to be with the words of the dictionary would have a better professional and precision

lucene-2.9.0
............\contrib
............\.......\analyzers
............\.......\.........\common
............\.......\.........\......\src
............\.......\.........\......\...\java
............\.......\.........\......\...\....\org
............\.......\.........\......\...\....\...\apache
............\.......\.........\......\...\....\...\......\lucene
............\.......\.........\......\...\....\...\......\......\analysis
............\.......\.........\......\...\....\...\......\......\........\ar
............\.......\.........\......\...\....\...\......\......\........\br
............\.......\.........\......\...\....\...\......\......\........\cjk
............\.......\.........\......\...\....\...\......\......\........\cn
............\.......\.........\......\...\....\...\......\......\........\compound
............\.......\.........\......\...\....\...\......\......\........\........\hyphenation
............\.......\.........\......\...\....\...\......\......\........\cz
............\.......\.........\......\...\....\...\......\......\........\de
............\.......\.........\......\...\....\...\......\......\........\el
............\.......\.........\......\...\....\...\......\......\........\fa
............\.......\.........\......\...\....\...\......\......\........\fr
............\.......\.........\......\...\....\...\......\......\........\miscellaneous
............\.......\.........\......\...\....\...\......\......\........\ngram
............\.......\.........\......\...\....\...\......\......\........\nl
............\.......\.........\......\...\....\...\......\......\........\payloads
............\.......\.........\......\...\....\...\......\......\........\position
............\.......\.........\......\...\....\...\......\......\........\query
............\.......\.........\......\...\....\...\......\......\........\reverse
............\.......\.........\......\...\....\...\......\......\........\ru
............\.......\.........\......\...\....\...\......\......\........\shingle
............\.......\.........\......\...\....\...\......\......\........\sinks
............\.......\.........\......\...\....\...\......\......\........\th
............\.......\.........\......\...\resources
............\.......\.........\......\...\.........\org
............\.......\.........\......\...\.........\...\apache
............\.......\.........\......\...\.........\...\......\lucene
............\.......\.........\......\...\.........\...\......\......\analysis
............\.......\.........\......\...\.........\...\......\......\........\ar
............\.......\.........\......\...\.........\...\......\......\........\fa
............\.......\.........\......\...\test
............\.......\.........\......\...\....\org
............\.......\.........\......\...\....\...\apache
............\.......\.........\......\...\....\...\......\lucene
............\.......\.........\......\...\....\...\......\......\analysis
............\.......\.........\......\...\....\...\......\......\........\ar
............\.......\.........\......\...\....\...\......\......\........\br
............\.......\.........\......\...\....\...\......\......\........\cjk
............\.......\.........\......\...\....\...\......\......\........\cn
............\.......\.........\......\...\....\...\......\......\........\compound
............\.......\.........\......\...\....\...\......\......\........\cz
............\.......\.........\......\...\....\...\......\......\........\de
............\.......\.........\......\...\....\...\......\......\........\el
............\.......\.........\......\...\....\...\......\......\........\fa
............\.......\.........\......\...\....\...\......\......\........\fr
............\.......\.........\......\...\....\...\......\......\........\miscellaneous
............\.......\.........\......\...\....\...\......\......\........\ngram
............\.......\.........\......\...\....\...\......\......\........\nl
............\.......\.........\......\...\....\...\......\......\........\payloads
...........

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