Hi Billy,
there is a README.TXT in the contrib/ltr directory.
Reading that you find this useful link[1] .
>From that useful link you see where the Jar of the plugin is located.
Specifically :
<lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-ltr-\d.*\.jar"
/>
Taking a look to the contrib and dist structure it seems quite a standard
approach to keep the readme in the contrib ( while in the source code the
contrib modules contain the plugins code).
The Solr binaries are located in the dist directory.
External libraries are in contrib.
[1]
https://cwiki.apache.org/confluence/display/solr/Learning+To+Rank#LearningToRank-Installation
-----
---------------
Alessandro Benedetti
Search Consultant, R&D Software Engineer, Director
Sease Ltd. - www.sease.io
--
Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
