See below. On Mon, Jan 24, 2011 at 1:51 PM, johnnyisrael <johnnyi.john...@gmail.com>wrote:
> > Hi, > > I am trying out the auto suggest using EdgeNgram. > > Using the following tutorial as a reference. > > > http://www.lucidimagination.com/blog/2009/09/08/auto-suggest-from-popular-queries-using-edgengrams/ > > In the above tutorial, The below two lines has been clearly mentioned, > > "Note that it’s necessary to wrap the query in double-quotes as a phrase. > Otherwise unpredictable and unwanted matches can occur." > > When i use double quotes as they said it works perfectly fine. I just want > to know the reason for this behavior. > > Can anyone explain me why it behaves like that? > > The reason here is that if you *don't* make it a phrase, then you're ORing (or ANDing) the grams. So if you were searching for won, your search would become w OR wo OR won, which would match n-grams from all over the place without regard to whether they appeared in order. > I tried the alternate method mentioned in the responses section of the same > tutorial [StandardTokenizerFactory and LowerCaseFilterFactory combination], > it does not work fine as expected[bringing unwanted matches]. > > Hmmm, I don't think the StandartTokenizer & LowerCase was being applied as autosuggest, there was a copyField in there that went to the EdgeNGram (note that I scanned the article).. Best Erick > Is there a best way to overcome this? > > Thanks, > > Johnny > > > > -- > View this message in context: > http://lucene.472066.n3.nabble.com/EdgeNgram-Auto-suggest-doubles-ignore-tp2321919p2321919.html > Sent from the Solr - User mailing list archive at Nabble.com. >
