Which phrase extraction tool is the state of art now?

Question

I know of the following open source tools, but I haven't found any comparisons of how good they are respectively. Tools with ready to use phrase extraction:

• KEA
• MAUI (http://code.google.com/p/maui-indexer/)
• Dragon, xTract (http://dragon.ischool.drexel.edu/xtract.asp)
• Lingpipe (http://alias-i.com/lingpipe/demos/tutorial/interestingPhrases/read-me.html)
• Mahout (https://cwiki.apache.org/MAHOUT/collocations.html)
• Anything else

Did anyone ever see such a comparison?

Answer 1

MAUI outperforms KEA on my experiments. There is a comparison on unsupervised automatic key phrase extraction methods (Coling 2010 paper). But they don't analyse supervised methods, I'm planning to do that in a near future.

In addition, I've also explored a richer set of features which improved the performance of automatic Key Phrase Extraction which is still far from perfect. I might release the extended version of MAUI with those extensions next year.

Please read the following papers or email me more details:

Supervised Topical Key Phrase Extraction of News Stories using Crowdsourcing, Light Filtering and Co-reference Normalization

Keyphrase Cloud Generation of Broadcast News