UW Twitter NLP Tools

Authors: Alan Ritter, Sam Clark

contact: aritter@cs.washington.edu

Example Usage:

export TWITTER_NLP=./
cat test.1k.txt | python python/ner/extractEntities2.py

note: this takes a minute or so to read in models from files

To include classification, simply add the --classify switch:

cat test.1k.txt | python python/ner/extractEntities2.py --classify

For higher quality, but slower results, optionally include features based on POS and chunk tags (chunk tags require POS)

cat test.1k.txt | python python/ner/extractEntities2.py --classify --pos
cat test.1k.txt | python python/ner/extractEntities2.py --classify --pos --chunk

Also has the ability to include event tags (requires POS):

cat test.1k.txt | python python/ner/extractEntities2.py --classify --pos --event

Requirements:

1. Linux
2. Libraries and executables can be compiled with build.sh

Relevant papers:

@inproceedings{Ritter11,
  author = {Ritter, Alan and Clark, Sam and Mausam and Etzioni, Oren},
  title = {Named Entity Recognition in Tweets: An Experimental Study},
  booktitle = {EMNLP},
  year = {2011}
}

@inproceedings{Ritter12,
  author = {Ritter, Alan and Mausam and Etzioni, Oren and Clark, Sam},
  title = {Open Domain Event Extraction from Twitter},
  booktitle = {KDD},
  year = {2012}
}

Demo:

statuscalendar.cs.washington.edu

Acknowlegements (bug fixes, etc...):

Junming Sui

Ming-Wei Chang

Tuan Anh Hoang Vu

sumant81