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https://issues.apache.org/jira/browse/LUCENE-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694718#action_12694718
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Grant Ingersoll commented on LUCENE-1550:
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Hey Tom,
The empty string test still fails, namely b/c it is expecting 0.0 instead of
-1. Seems like we should just return 0 for the case where one is empty.
Although, even that is a bit weird, right? For instance, in the Edit distance
case, there still is a notion of the number of edits one needs to make to get
from a string to an empty string, right? That is, the distance from "a" to ""
seems less than the distance of "abcdef" to "", no?
I guess I'm fine with 0, but what does the literature suggest for this edge
case?
> Add N-Gram String Matching for Spell Checking
> ---------------------------------------------
>
> Key: LUCENE-1550
> URL: https://issues.apache.org/jira/browse/LUCENE-1550
> Project: Lucene - Java
> Issue Type: New Feature
> Components: contrib/spellchecker
> Affects Versions: 2.9
> Reporter: Thomas Morton
> Assignee: Grant Ingersoll
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1550.patch, LUCENE-1550.patch
>
>
> N-Gram version of edit distance based on paper by Grzegorz Kondrak, "N-gram
> similarity and distance". Proceedings of the Twelfth International Conference
> on String Processing and Information Retrieval (SPIRE 2005), pp. 115-126,
> Buenos Aires, Argentina, November 2005.
> http://www.cs.ualberta.ca/~kondrak/papers/spire05.pdf
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