Tutorial Challenge: Multilingual Part-Of-Speech Tagger

Posted on September 23, 2011 by Sebastian Hellmann

The goal of this challenge is straight-forward: An HTML page has one text area, where you can post a text. The language of the text should be detected and then the following should be highlighted: Verbs should be highlighted in green, Nouns in red, Adjectives in orange and Articles in yellow.The highlighting should work for 5-10 languages of your choice. (The choice of colour is of course not strict, but it has to be the same across languages).

A mockup can be found here:

Code:

Some suggestions of resources that can be used, i.e. you can use anything else:

  • The connection between Stanford CoreNLP and OLiA is currently only implemented for the English pre-trained model and only for the Penn tag set.
  • In some months, KAIST will produce a NIF adapter for a Korean POS tagger.
  • Not all components required for this task have NIF adapters currently.
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Stanford CoreNLP

Posted on September 13, 2011 by Sebastian Hellmann

According to the Get Involved page each blog post has to start with a short introduction: I created this implementation to provide a reference implementation for NIF 1.0.

StanfordCore is an NLP tool, that combines lemmatizing, POS-tags, dependency parsers and many more layers. The tool currently only produces NIF output, but might be extended to read NIF input as well. There is a Demo Web service available

 

Homepage Corenlp.shtml
Additionalparameter None
Status Reference Implementation for NIF 1.0 . Provides lemmas, POS tags and also (experimental) Syntax trees
Webserviceurl
Demo
Code

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SnowballStemmer

Posted on September 13, 2011 by Sebastian Hellmann

According to the Get Involved page each blog post has to start with a short introduction: I created this implementation to provide a reference implementation for NIF 1.0.

The SnowBall libraries provide basic implementations for stemming algorithms for a lot of languages.  This NIF implementation encapsulates the stemmer.

Homepage Snowball.tartarus.org
Status Reference Implementation for NIF 1.0 .
Additionalparameter Other languages are available with: stemmer=PorterStemmer or stemmer=HungarianStemmer and others from:  http://lucene.apache.org/java/2_4_0/api/contrib-snowball/index.html
Webserviceurl
Demo
Code

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FOX

Posted on September 13, 2011 by Sebastian Hellmann

FOX participated in the initial field test before NIF 1.0 and has not yet been updated.
It is best to try the online demo of FOX at http://fox.aksw.org

Currently, FOX only allows POST so the API can not be called within the browser but only with curl:

curl  -d "type=TEXT&nif=TRUE&task=NER&output=TURTLE&text=My%20favorite%20actress%20is%20Natalie%20Portman!"

Homepage Fox.aksw.org
Status implements some features of NIF-1.0, but: GET is missing, ‘input-type’ is ‘type’
Demo Index.html
Webserviceurl Api
Code
Nlpdomain Entity Linking

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