I may be over simplifying here but in this case don't you just need to use an analyzer that breaks the word "SAP.EM.FIN.AM" on full stops and throws them out, so that it is indexed as terms "SAP" "EM" "FIN" "AM". This is the same as it will index "SAP EM FIN AM" as long as you break on whitespace too. I.E SimpleAnalyzer (runs of letter characters are tokens)
Then the query for "SAP EM FIN AM" will match both. Carl -----Original Message----- From: Donna L Gresh [mailto:gr...@us.ibm.com] Sent: 07 August 2009 15:35 To: java-user@lucene.apache.org Subject: Is there a way for me to handle a multiword synonym correctly? I saw some discussion on the board but I'm not sure I've got quite the same problem. As an example, I have a query that might be a technical skill: SAP EM FIN AM I would like that to match a document that has *either* SAP.EM.FIN.AM or "SAP EM FIN AM" (in that order and all together, not spread out through the document). The approach I had tried was at index time if I saw SAP.EM.FIN.AM I would consider "SAP EM FIN AM" a synonym for it, using the Lucene in Action example. Luke shows me that I have two terms in the index for this document: SAP.EM.FIN.AM and "SAP EM FIN AM" (one term). Thus it appears differently in the index than if it had been organically found as just the string of tokens, in which case there would be separate terms for SAP, EM, and so on. At query time if I look for "SAP EM FIN AM" it is formed as a phrase query with a slop of 0 which does *not* match the one term version "SAP EM FIN AM". (For that matter a simple boolean query doesn't find it either) Luke confirms the fact that the phrase query does not find my synonym term. The query "SAP EM FIN AM" finds *only* documents that originally had those separated tokens in them. Is there a way to handle this situation such that at index time I can turn SAP.EM.FIN.AM into something that will be found with a query for "SAP EM FIN AM"? Thanks for any pointers Donna This message should be regarded as confidential. If you have received this email in error please notify the sender and destroy it immediately. Statements of intent shall only become binding when confirmed in hard copy by an authorised signatory. The contents of this email may relate to dealings with other companies within the Detica Limited group of companies. Detica Limited is registered in England under No: 1337451. Registered offices: Surrey Research Park, Guildford, Surrey, GU2 7YP, England. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
