Thanks Ben and Michael! Pam
On Thu, Feb 18, 2010 at 2:45 PM, Ben Martz <benma...@gmail.com> wrote: > Pamela, > > I strongly recommend than anyone planning to work with Lucene.Net follows > Michael's suggestion and reads LIA for background but once you've done > that, > here's a summary in just a few lines that may help get you up and running. > I > use Snowball (read about algorithmic justifications here: > http://snowball.tartarus.org/) in my product for stemming. IIRC, Snowball > can be found in the contrib directory. The approach just using the > PorterStemming analyzer is pretty much identical. > > Indexing: > > IndexWriter writer = new IndexWriter(indexPath, new SnowballAnalyzer( > "English"), false); > > > Searching: > > Analyzer analyzer = new SnowballAnalyzer("English"); > > QueryParser qp = new QueryParser("Contents", analyzer); > > Query query = qp.Parse(inQuery); > > > Also keep in mind that if you use Highlighter that you will need to again > use the Snowball analyzer when fragmenting the results (I'm actually > reading > the original field contents from a cached file on disk here, don't mind me > :D) > > QueryScorer qs = new QueryScorer(query, reader, "Contents"); > > Highlighter hl = new Highlighter(qs); > > hl.SetMaxDocBytesToAnalyze(int.MaxValue); > > > TokenStream stream = new > SnowballAnalyzer("English").TokenStream("Contents", > new StringReader(fileContents)); > > > TextFragment[] frag = hl.GetBestTextFragments(stream, fileContents, false, > inDetailLevel == Int32.MaxValue ? k_MaxQueryFragments : inDetailLevel); > > Good luck, > Ben > > On Thu, Feb 18, 2010 at 10:43 AM, Michael Garski <mgar...@myspace-inc.com > >wrote: > > > Pamela, > > > > To get the results you expect using a stemmer, you would need to use it > > at both index and search time. > > > > I don't have any examples on the use of a stemmer, and suggest checking > > out the book Lucene in Action - there is an early access copy of the > > next version available at http://www.manning.com/hatcher3/. While the > > book details the Java version of Lucene, the same APIs are present in > > Lucene.Net. > > > > Michael > > > > -----Original Message----- > > From: Pamela Foxcroft [mailto:pamelafoxcr...@gmail.com] > > Sent: Thursday, February 18, 2010 10:39 AM > > To: lucene-net-dev@lucene.apache.org > > Subject: using Porter > > > > I am confused about where I use PorterSteming algorithm. Do I use it in > > the > > indexer or the searcher? > > > > Also if anyone has any examples that would be great! > > > > Thanks > > > > Pamela > > > > >
