Hi, I'd appreciate if someone could explain the results I'm getting.
I've written a simple custom analyzer that applies the NGramTokenFilter to the token stream during indexing. It's never applied during searching. The purpose of this is to match sub-words. Without the ngram filter, if I searched on the word 'postcode' it returns 2 documents. If I searched on 'code' it returns 6 documents (with no overlap on the postcode results). If I apply the ngram filter with min 1 and max 10, searching 'postcode' returns the same 2 docs, while searching 'code' returns 9 docs. This sort-of feels right. The problem comes when I set the min ngram size to 3, and the max to 5. Searching 'postcode' returns no results (as expected), but searching 'code' only returns 2 docs (the 2 normally returned by a 'postcode' search). This last result for 'code' just doesn't seem correct - it should be returning at least the 6 docs from the original search. I'd really appreciate some advice on what is going on with the ngram filter. Thanks -- View this message in context: http://www.nabble.com/Confused-with-NGRAM-results-tp19202310p19202310.html Sent from the Lucene - Java Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
