I'm glad my late night explanation helped. You may be right about there being a better name for this functionality. Note that we do have support for file-based (dictionary-like) spellchecker, too.
Otis -- Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch ----- Original Message ---- > From: Yao Ge <yao...@gmail.com> > To: solr-user@lucene.apache.org > Sent: Tuesday, June 2, 2009 9:42:48 PM > Subject: Re: spell checking > > > Excellent. Now everything make sense to me. :-) > > The spell checking suggestion is the closest variance of user input that > actually existed in the main index. So called "correction" is relative the > text existed indexed. So there is no need for a brute force list of all > correctly spelled words. Maybe we should call this "alternative search > terms" or "suggested search terms" instead of spell checking. It is > misleading as there is no right or wrong in spelling, there is only popular > (term frequency?) alternatives. > > Thanks for the insight. > > > Otis Gospodnetic wrote: > > > > > > Hello, > > > > In short, the assumption behind this type of SC is that the text in the > > main index is (mostly) correctly spelled. When the SC finds query > > terms that are close in spelling to words indexed in SC, it offers > > spelling suggestions/correction using those presumably correctly spelled > > terms (there are other parameters that control the exact behaviour, but > > this is the idea) > > > > Solr (Lucene's spellchecker, which Solr uses under the hood, actually) > > turn the input text (values from those fields you copy to the spell field) > > into so called n-grams. You can see that if you open up the SC index with > > something like Luke. Please see > > http://wiki.apache.org/jakarta-lucene/SpellChecker . > > > > Otis > > -- > > Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch > > > > > > > > ----- Original Message ---- > >> From: Yao Ge > >> To: solr-user@lucene.apache.org > >> Sent: Tuesday, June 2, 2009 5:34:07 PM > >> Subject: Re: spell checking > >> > >> > >> Sorry for not be able to get my point across. > >> > >> I know the syntax that leads to a index build for spell checking. I > >> actually > >> run the command saw some additional file created in data\spellchecker1 > >> directory. What I don't understand is what is in there as I can not trick > >> Solr to make spell suggestions based on the documented query structure in > >> wiki. > >> > >> Can anyone tell me what happened after when the default spell check is > >> built? In my case, I used copyField to copy a couple of text fields into > >> a > >> field called "spell". These fields are the original text, they are the > >> ones > >> with typos that I need to run spell check on. But how can these original > >> data be used as a base for spell checking? How does Solr know what are > >> correctly spelled words? > >> > >> > >> multiValued="true"/> > >> > >> multiValued="true"/> > >> ... > >> > >> multiValued="true"/> > >> ... > >> > >> > >> > >> > >> > >> Yao Ge wrote: > >> > > >> > Can someone help providing a tutorial like introduction on how to get > >> > spell-checking work in Solr. It appears many steps are requires before > >> the > >> > spell-checkering functions can be used. It also appears that a > >> dictionary > >> > (a list of correctly spelled words) is required to setup the spell > >> > checker. Can anyone validate my impression? > >> > > >> > Thanks. > >> > > >> > >> -- > >> View this message in context: > >> http://www.nabble.com/spell-checking-tp23835427p23841373.html > >> Sent from the Solr - User mailing list archive at Nabble.com. > > > > > > > > -- > View this message in context: > http://www.nabble.com/spell-checking-tp23835427p23844050.html > Sent from the Solr - User mailing list archive at Nabble.com.
