Doh! Turns out there's TWO ways to invoke Double Metaphone:
lucene/analysis/phonetic/src/java/org/apache/lucene/analysis/phonetic/PhoneticFilterFactory.java (and Factory) - use a setting lucene/analysis/phonetic/src/java/org/apache/lucene/analysis/phonetic/DoubleMetaphoneFilter.java (and Factory) - only D.M. And the second more specific one has in it's comments: "... DoubleMetaphone (supporting secondary codes)..." In my defense, it wasn't in the wiki ;-) TODO to add it Hi Walter! Thanks for the reply. In my case it's special app that deals with surnames already in a database. Not everybody is interactively searching for movie rentals y'know ;-) -- Mark Bennett / New Idea Engineering, Inc. / mbenn...@ideaeng.com Direct: 408-733-0387 / Main: 866-IDEA-ENG / Cell: 408-829-6513 On Sat, Apr 27, 2013 at 5:57 PM, Mark Bennett <mbenn...@ideaeng.com> wrote: > As I understand Wikipedia, Double Metaphone improves over Metaphone in 2 > areas: > 1: Better linguistic matching > 2: Can output a secondary token for words like Schmidt > > A quick look at the Apache commons codec and Lucene filter, it doesn't > seem like that secondary token is supported? There is "save" code for > whether inject is true/false, but that's not the same thing, and doesn't > seem to have been extended. > > Either I'm reading it wrong? Or it somehow produces a compound token in > those cases? > > Looking on the web, one author claims that only 10% of names need a second > token anyway, so not a big deal, but still good to know. > > Thanks > > -- > Mark Bennett / New Idea Engineering, Inc. / mbenn...@ideaeng.com > Direct: 408-733-0387 / Main: 866-IDEA-ENG / Cell: 408-829-6513 >
