This would be an awesome feature to have, wouldn't it? For now, the best you can do is to create a master dictionary that contains all of the "FirstName"s and "LastName"s and use that as your dictionary's spellcheck field. This is the <copyField> technique that you refer to in the linked post. Alone this won't work because it might correct a misspelled "FirstName" with someone's "LastName" or visa-versa, giving you absurd query corrections.
The workaround for this is to use "spellcheck.collate=true" and set "spellcheck.maxCollationTries" to a number greater than zero. This will cause SpellCheckComponent to verify that the particular suggestions will actually return some hits before sending them back. So every collation returned will represent a valid set of spelling corrections for the user's terms. Another drawback to having a master dictionary is that by default, SpellCheckComponent will never suggest for words included in the dictionary. So if somebody's misspelt FirstName happens to be in the dictionary because it is a valid LastName, SpellCheckComponent's default settings assume that this is indeed correctly-spelled. The way around this is to specify "spellcheck.alternativeTermCount" to a non-zero value. This is the number of suggestions to return for terms that are in the dictionary (you can use the same value as for "spellcheck.count", or a lower value if you want to try and tune this behavior). You should also set "spellcheck.maxResultsForSuggest" to zero. (Use a higher value if you also want "did-you-mean"-style suggestions for low-hitcount queries.) I think these conbinations will probably give you exactly what you want, at the expense of some overhead and configuration complexity. For more information, see the wiki section beginning here: http://wiki.apache.org/solr/SpellCheckComponent#spellcheck.count For an example, see the "/spell" request handler in the Solr Example: http://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x/solr/example/solr/collection1/conf/solrconfig.xml James Dyer E-Commerce Systems Ingram Content Group (615) 213-4311 -----Original Message----- From: SolrCarinthia [mailto:tandon.ha...@ymail.com] Sent: Thursday, November 08, 2012 7:18 AM To: solr-user@lucene.apache.org Subject: Solr SpellCheck on Query Field Is it possible to run a spellcheck on multiple fields. I am aware of using a multivalued field for this (http://lucene.472066.n3.nabble.com/spellcheck-on-multiple-fields-td1587327.html) However, what I want is to return spellcheck alternatives based on the field against which the query ran. So if I run a query against a field like 'FirstName', I want to be able to retrieve alternate query terms from the values indexed in 'FirstName' field only. Similarly a search against a field 'LastName' should return alternatives from the values indexed for this field only. I dont think a multivalued field approach would work for me, since it is actually an aggregation of indexed values from multiple fields. When searching for First Name, I don't want to put forward suggestions that are actually coming from tokens indexed from Last Name, Address City,etc. To summarize my problem, I want to be able to chose the field against which spellcheck alternatives should be provided at query time. Is this possible ? -- View this message in context: http://lucene.472066.n3.nabble.com/Solr-SpellCheck-on-Query-Field-tp4019036.html Sent from the Solr - User mailing list archive at Nabble.com.
