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Common words
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No
Proper nouns
Ambiguous words
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Yes
No
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Document 1
Proper nouns
Common words
Document n
Proper nouns
Common words ...
Stopwords
Stopwords Stopwords
Porter stemming
Stopwords
Diacritical mark elimination
Porter stemming Diacritical mark
elimination
Vocabulary of proper nouns
Vocabulary of common words
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