I want to know what is the best open source Java based framework for Text Mining, to use botg Machine Learning and dictionary Methods.
I'm using Mallet but there are not that much documentation and I do not know if it will fit all my requirements.
I honestly think that the several answers presented here are very good. However, to fulfill my requirements I have chosen to use Apache UIMA with ClearTK. It supports several ML Methods and I do not have any licences problem. Plus, I can make wrappers to other ML methodologies, and I take the advantage of the UIMA framework, which is very well organized and fast.
Thank you all for your interesting answers.
Best Regards, ukrania
Although not a specialized text mining framework, Weka has a number of classifiers usually employed in text mining tasks such as: SVM, kNN, multinomial NaiveBayes, among others.
It also has a few filters to wok with textual data like the
StringToWordVector filter which can perform TF/IDF transformation.
Check out the Weka wiki website for more information.
I've used LingPipe -- a suite of Java libraries for the linguistic analysis of human language -- for text mining (and other related) tasks.
It is a very well documented software package, and the site contains several tutorials which thoroughly explain how to do a certain task with LingPipe, such as named entity recognition. There is also a newsgroup, wherein you can post any question you have about the software (or NLP related tasks), and have a prompt reply from the authors of the package themselves; and of course, a blog.
The source code is also very easy to follow and well documented which, for me, is always a big plus.
As for Machine Learning algorithms, there are plenty, from Naïve Bayes to Conditional Random Field. On the other hand, for dictionary-matching algorithms, they have an ExactDicitonaryChunker, which is an implementation of the Aho-Corasich algorithm (a very, very, fast algorithm for this task).
In sum, I think it is one of the best NLP software package for Java (I haven't used every single package that is out there, so I can't say it's the best), and I definitely recommend it for the task that you have at hand.
You may already know about GATE: http://gate.ac.uk/
...but that's what we've used (at my day job) for lots of different text mining problems. It's pretty flexible and open.
Maybe have a look at Java Open Source NLP and Text Mining tools.
I built a maximum entropy named entity recognizer for CoNLL data using OpenNLP MaxEnt http://sourceforge.net/projects/maxent/ for a course once.
Required a lot of data preprocessing with custom perl scripts do get all the features extracted into nice neat numerical vectors though.
We use lucene to process live streams from the internet. It has a native java api.
You can then use mahout which is a bunch of machien learning algorithms which operate on top of lucene.