J Pardos created LUCENE-7420:
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Summary: SpanishLightStemmer stemming errors
Key: LUCENE-7420
URL: https://issues.apache.org/jira/browse/LUCENE-7420
Project: Lucene - Core
Issue Type: Bug
Components: modules/analysis
Affects Versions: 5.x, 6.x
Reporter: J Pardos
Priority: Minor
SpanishLightStemmer only applies stemming if the original word is 5 characters
or longer. It tries to removing gender and numbers, removing final vowel and s
if they exist.
So, perro, perra, perros and perras (dog, bitch, dogs and bitches) all become
'perr'.
The problem arises with shorter words. Gatos and Gatas (cats / female cats) all
become 'gat', but the singular forms (gato, gata) are below the 5 character
threshold, so they wouldn't be stemmed.
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