Hi Hui, I would love to experiment with your retrieval models. There have been various conversations about BM25 and other functions, but little is publicly available.
Cheers, - Jeff > -----Original Message----- > From: Hui Fang [mailto:[EMAIL PROTECTED] > Sent: Thursday, February 01, 2007 11:42 PM > To: java-dev@lucene.apache.org > Subject: implementatin of the state-of-art retrieval models > for lucene? > > Dear all, > > My primary research interest is Information retrieval, with a > focus on developing effective and robust retrieval models. I > am happy to send my first email to Lucene community. > > Lucene and nutch are really useful IR systems. But I think > that the current retrieval function implemented in Lucene > does not perform as well as other state-of-art retrieval > functions in terms of effectiveness. I have implemented some > state-of-art models (such as pivoted normalization, okapi and > axiomatic retrieval models) on top of Lucene, and evaluated > these models and the default model implemented in Lucene > using standard IR evaluation methodology. Experiments show > that the state-of-art retrieval functions outperform the default one. > Actually, this is one assignment my advisor and I designed > for our IR course. > > After posting this assignment online, quite a few IR > researchers contacted us and asked for the code of our > implementations. So, we think that it might be beneficial to > everyone in the lucene community and IR research community, > if we could contribute our implementation of the state-of-art > retrieval functions to Lucene. > I think that our contribution could help improve the > retrieval performance for both Lucene and nutch. > > What do you think? > > Thanks, > -Hui > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
