I've looked at the docs/source for WordDelimiterFilter, and I understand what it does now.
Here is my configuration: http://gist.github.com/270590 I've tried the StandardTokenizerFactory instead of the WhitespaceTokenizerFactory, but I get the same problem as before, a the period from the previous sentence shows up and the period from the current sentence is cut off of highlighter fragments. I've tried the WhitespaceTokenizer with the StandardFilter, and this kinda works, but to match a word at the end of a sentence, you need to search for the period at the end of the sentence (the period is being tokenized along with the word). In any case, if I use the WordDelimiterFilter or add preserveOriginal="1", everything seems to work. (If I remove the WordDelimiterFilter, the periods are indexed with the word they're connected to, and searching for those words doesn't match unless the user includes the period) I'm trying to go through the code to understand how this works. On Wed, Jan 6, 2010 at 9:13 AM, Erick Erickson <erickerick...@gmail.com>wrote: > Hmmm, the name WordDelimiterFilterFactory might be leading > you astray. Its purpose isn't to break things up into "words" > that have anything to do with grammatical rules. Rather, it's > purpose is to break up strings of funky characters into > searchable stuff. see: > > http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#solr.WordDelimiterFilterFactory > > In the grammatical sense, PowerShot should just be > PowerShot, not power shot (which is what WordDelimiterFactory > gives you, options permitting). So I think you probably want > one of the other analyzers.... > > Have you tried any other analyzers? StandardAnalyzer might be > more friendly.... > > HTH > Erick > > On Tue, Jan 5, 2010 at 5:18 PM, Caleb Land <caleb.l...@gmail.com> wrote: > > > I've tracked this problem down to the fact that I'm using the > > WordDelimiterFilter. I don't quite understand what's happening, but if I > > add preserveOriginal="1" as an option, everything looks fine. I think it > > has > > to do with the period being stripped in the token stream. > > > > On Tue, Jan 5, 2010 at 2:05 PM, Caleb Land <caleb.l...@gmail.com> wrote: > > > > > Hello, > > > I'm using Solr 1.4, and I'm trying to get the regex fragmenter to parse > > > basic sentences, and I'm running into a problem. > > > > > > I'm using the default regex specified in the example solr > configuration: > > > > > > [-\w ,/\n\"']{20,200} > > > > > > But I am using a larger fragment size (140) with a slop of 1.0. > > > > > > Given the passage: > > > > > > Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla a neque > a > > > ipsum accumsan iaculis at id lacus. Sed magna velit, aliquam ut congue > > > vitae, molestie quis nunc. > > > > > > When I search for "Nulla" (the first word of the second sentence) and > > grab > > > the first highlighted snippet, this is what I get: > > > > > > . <em>Nulla</em> a neque a ipsum accumsan iaculis at id lacus > > > > > > As you can see, there's a leading period from the previous sentence and > > the > > > period from the current sentence is missing. > > > > > > I understand this regex isn't that advanced, but I've tried everything > I > > > can think of, regex-wise, to get this to work, and I always end up with > > this > > > problem. > > > > > > For example, I've tried: \w[^.!?]{0,200}[.!?] > > > > > > Which seems like it should include the ending punctuation, but it > > doesn't, > > > so I think I'm missing something. > > > > > > Does anybody know a regex that works? > > > -- > > > Caleb Land > > > > > > > > > > > -- > > Caleb Land > > > -- Caleb Land
