Hi Yousef You are not doing anything wrong - its just how the Porter stemmer works!
The problem with Porter is that it tries to do everything in a purely algorithmic way - which doesn't cater for irregular conjugations etc. Don't worry too much though, as long as you do the same stemming on the query string as you did while indexing - you should be able to find what you are looking for but can have some issues with trailing wildcards..... If you want a better stemmer, look for something that has a dictionary as well as algorithmic rules - a quick one that is readily available is Kstem which while not perfect I think is quite a bit better than Porter. You can get the source code (Kstem.jar) from the floowing website: http://ciir.cs.umass.edu/downloads/ For more info on Kstem see the paper by its designer Bob Krovetz at: http://ciir.cs.umass.edu/pubfiles/ir-35.pdf Cheers Pete ----- Original Message ----- From: "Yousef Ourabi" <[EMAIL PROTECTED]> To: "Lucene Users List" <[EMAIL PROTECTED]> Sent: Saturday, November 06, 2004 1:13 AM Subject: Stemming Oddness > Hey, > Thanks for everyone's reply to my last post, I have > some quesiton. I imported the PorterStemmer and when I > did the following > > PorterStemmer ps = new PorterStemmer(); > string r1 = ps.stem("elephant"); > r1 is 'eleph' > > also buying stems to bui, is this normal? Am I doing > something wrong. > > I am calling reset inbetween function calls. > > Thanks, > Yousef > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
