On May 30, 2013, at 8:38 PM, "Masanz, James J." <masanz.ja...@mayo.edu> wrote: > As a first pass, can we update the dependency to ClearTK 1.4.0 without > retraining the models -- would retraining be necessary even if we didn't > switch to LIBLINEAR.
Retraining might still be necessary for anything that uses CleartkExtractor, since generation of out-of-bounds features has improved: https://groups.google.com/forum/#!topic/cleartk-users/KS2BLQcT-ds But anything not using CleartkExtractor should be safe. And even the things that are using CleartkExtractor may not degrade much if the out-of-bounds features aren't very important. But we'd need to test it a bit to see. Steve > > Just wonder if we have an option for staging this, in case we can't tackle it > all now. > > -----Original Message----- > From: dev-return-1646-Masanz.James=mayo....@ctakes.apache.org > [mailto:dev-return-1646-Masanz.James=mayo....@ctakes.apache.org] On Behalf Of > Steven Bethard > Sent: Thursday, May 30, 2013 5:45 PM > To: ctakes-...@incubator.apache.org > Subject: upgrade ClearTK dependency to 1.4.0? > > I just released ClearTK 1.4.0 and there are a couple of reasons we should > probably consider updating the cTAKES dependency: > > (1) ClearTK 1.4.0 can now load trained models from the classpath, so we could > get rid of the workaround > org.apache.ctakes.relationextractor.ae.RelationExtractorAnnotator.allowClassifierModelOnClasspath. > > (2) ClearTK 1.4.0 has wrappers for multi-class classification with LIBLINEAR > which is orders of magnitude faster than LIBSVM. > > The main downside is that models will have to be re-trained. (It's not > necessarily the case that all models would need to be retrained, depending on > exactly which classes they were using, but it's probably safer to do so.) > > I believe this would mostly affect ctakes-temporal, ctakes-relation-extractor > and ctakes-assertion. > > Thoughts? > > Steve > > P.S. I noticed that ctakes-assertion declares a dependency on > cleartk-examples. The cleartk-examples module was never intended for release, > and has not been released as part of ClearTK 1.4.0. Looking at the code, it > seems like the dependency in cleartk-examples is not needed, but perhaps a > ctakes-assertion person could weigh in on why this dependency was there?
