I just started working with the highlighting. I am using the default
configurations. I have a field that I can get a single highlight to occur
marking the data.
What I would like to do is this,
Given a word say 'tumor', and the sentence
" the lower tumor grew 1.5 cm. blah blah blah we need to remove the tumor in
the next surgery"
I would like to get ."...<em> the lower tumor grew 1.5 cm </em>..... blah blah
blah we need to ...<em> remove the tumor in the next </em>..... surgery"
Thus finding multiple references to the work and only grabbing a few words
around it.
In the solrconfig.xml I have been able to change the hl.simple.pre/post
variable, but when I try to change the hl,regex pattern or the hl.snippets they
don't have any effect. I thought the hl.snippets would alow me to find more
than one and highlight it, and well I tried a bunch of regex patterns but they
didn't do anything.
here is a snippet of the config file.
Any help is appreciated.
Gregg
<!-- A regular-expression-based fragmenter (f.i., for sentence extraction)
-->
<fragmenter name="regex" class="org.apache.solr.highlight.RegexFragmenter">
<lst name="defaults">
<!-- slightly smaller fragsizes work better because of slop -->
<int name="hl.snippets">4</int> <int name="hl.fragsize">70</int>
<!-- allow 50% slop on fragment sizes -->
<float name="hl.regex.slop">0.2</float>
<!-- a basic sentence pattern -->
<str name="hl.regex.pattern">[-\w ,/\n\"']{1,1}</str>
</lst>
</fragmenter>
<!-- Configure the standard formatter -->
<formatter name="html" class="org.apache.solr.highlight.HtmlFormatter"
default="true">
<lst name="defaults">
<int name="hl.snippets">4</int>
<int name="hl.fragsize">100</int>
<str name="hl.simple.pre"><![CDATA[...<em>]]></str>
<str name="hl.simple.post"><![CDATA[</em>....]]></str>
</lst>
