Hey William,
Excellent, that solves it! Nice example. Thanks a lot!
Cheers,
Vincent
On 09-01-17 17:51, William Colen wrote:
That is the idea of the POS Tagger Factory. You can change the context
generator using the factory.
Take a look at this JUnit. Method testPOSTaggerWithCustomFactory
https://github.com/apache/opennlp/blob/master/opennlp-tools/src/test/java/opennlp/tools/postag/POSTaggerFactoryTest.java
Give it a try and come back if you need help.
William
2017-01-09 9:28 GMT-02:00 Vincent <vincent.s...@openindex.io>:
Hi William,
Thanks for the reply. I think I haven't been exactly clear in phrasing my
question.
I'm using OpenNLP as a Maven depencency for my own project, which is more
like shell around OpenNLP, only calling the functions I need to train/apply
the POSTagger. I don't have the OpenNLP code in my project, I just wanted
to inherit from the code to customize/override the feature selection. But
this is problematic because for example, POSModel is a final class and
can't be extended.
I hope that this makes sense.
Cheers,
Vincent
On 05-01-17 17:46, William Colen wrote:
Hi Vincent,
OpenNLP will take care of serializing the information necessary to call
your custom factory instead of the default one.
Just to make sure of that, change your custom POSContextGenerator by
adding
a small log message. You should see the message both during training and
runtime.
To train, use the methods that you can pass in your custom factory.
-- William
2017-01-05 13:53 GMT-02:00 Vincent <vincent.s...@openindex.io>:
Hi all,
I would like to be able to have a bit more influence on the features used
for POS-tagging. I suppose that feature selection happens in the
POSContextGenerator. However, I can't seem to be able to change the type
of
POSContextGenerator that is being called from POSTaggerFactory: the
getPOSContextGenerator() function always returns the
DefaultPOSContextGenerator.
Looking for a way to make a custom POSContextGenerator work, I made a
custom POSTaggerFactory too, that inherits from the regular
POSTaggerFactory, but returns my own POSContextGenerator. However, for
example, a class like POSModel (in turn used by POSTaggerME) is final,
and
can't be inherited from to use my custom POSTaggerFactory.
It seems I just need to copy the entire code into my own project, or is
there a better way to make this work?
Thanks in advance!
Cheers,
Vincent
