A part-of-speech tagger for English Developed at: University of Tokyo, Department of Computer Science, Tsujii laboratory Version 1.0 Overview Tagging speed is crucial in large-scale information extraction and real-time NLP applications. This part-of-speech (POS) tagger offers fast tagging (2400 tokens/sec) with a state-of-the-art accuracy (97.10% on the WSJ corpus). The tagger uses an extensio