Stanfordparser (or rjb) error on Snow Leopard

[Boris Do]

I'm having trouble getting stanfordparser to work under Snow Leopard. It
appears to be an rjb issue. I tried the approach suggested at this post
without success:
http://www.foraker.com/resolving-issues-with-rjb-and-rvm-caused-by-snow-leopard-java-update/
The error I'm getting is the following:

ruby-1.9.2-p180 :001 > require 'stanfordparser'
=> true
ruby-1.9.2-p180 :002 > preproc =
StanfordParser:ocumentPreprocessor.new
RuntimeError: Constructor not found
from
/Users/boris/.rvm/gems/ruby-1.9.2-p180/gems/stanfordparser-2.2.0/lib/java_object.rb:40:in
`new'
from
/Users/boris/.rvm/gems/ruby-1.9.2-p180/gems/stanfordparser-2.2.0/lib/java_object.rb:40:in
`initialize'
from
/Users/boris/.rvm/gems/ruby-1.9.2-p180/gems/stanfordparser-2.2.0/lib/stanfordparser.rb:239:in
`initialize'
from (irb):2:in `new'
from (irb):2
from /Users/boris/.rvm/rubies/ruby-1.9.2-p180/bin/irb:16:in
`<main>'


If I don't follow the approach suggested at the above post, I get a
different error:

ruby-1.9.2-p180 :001 > require 'stanfordparser'
[BUG] cross-thread violation on rb_gc()
(null)

Abort trap


Any ideas?

 

[Luiz Nogara]

I also followed the instructions of the blog post you mentioned, and
also got the same results. The gem I'm using is the "stanfordparser"
v2.2.0 (https://github.com/jcwilk/stanfordparser)

From the changelog at the Stanford Parser website, I figured the last
version (1.6.6) changed APIs that the ruby wrapper does not understand.

---
Version 1.6.6 2011-04-20 Internal code and API changes (ArrayLists
rather than Sentence; use of CoreLabel objects) to match tagger and
CoreNLP.
---

So, I tried the previous version, which is available at.

http://nlp.stanford.edu/software/stanford-parser-2010-11-30.tgz

I got it to work with this version, but I could not make the simple test
work:

ruby-1.8.7-p334 :003 > require 'stanfordparser'
=> true
ruby-1.8.7-p334 :004 > preproc =
StanfordParser:ocumentPreprocessor.new
=> <DocumentPreprocessor>
ruby-1.8.7-p334 :005 > puts preproc.getSentencesFromString("This is a
sentence. So is this.")
This
is
a
sentence