Extended javadocs in spellchecker
---------------------------------
Key: LUCENE-786
URL: https://issues.apache.org/jira/browse/LUCENE-786
Project: Lucene - Java
Issue Type: Improvement
Components: Javadocs
Affects Versions: 2.0.0
Reporter: Karl Wettin
Priority: Trivial
Added some javadocs that explains why the spellchecker does not work as one
might expect it to.
http://www.nabble.com/SpellChecker%3A%3AsuggestSimilar%28%29-Question-tf3118660.html#a8640395
> Without having looked at the code for a long time, I think the problem is
> what the
> lucene scoring consider to be best. First the grams are searched, resulting
> in a number
> of hits. Then the edit-distance is calculated on each hit. "Genetics" is
> appearently the
> third most similar hit according to Lucene, but the best according to
> Levenshtein.
>
> I.e. Lucene does not use edit-distance as similarity. You need to get a bunch
> of best hits
> in order to find the one with the smallest edit-distance.
I took a look at the code, and my assessment seems to be right.
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