On 11/7/11 5:20 PM, John Stewart wrote:
I'm a new user of OpenNLP. I'm evaluating the parser against others,
I enjoy the ease of using OpenNLP with Clojure so it would be great to
be able to settle on OpenNLP's parser. Unfortunately I'm unable to
find details online of how the parser was trained on, how it works --
is it lexicalized? Was it trained with the MaxEnt package?
For this reason I'm unable to guess at its coverage. Any technical
details about it would be very welcome.
I should say that in informal tests, while it has lower exhibited
coverage than, say, the Stanford parser, the coverage doesn't appear
*that* much lower. So I'm optimistic:)
Parser documentation is still very sparse.
The Parser itself is based on a paper from Adwait Ratnaparkhi.
You can find the link to it, and other papers
OpenNLP is based on in our wiki:
https://cwiki.apache.org/OPENNLP/nlp-papers.html
The models from the website are trained on the Penn Treebank.
Let me know if you need more information.
Hope this helps,
Jörn
