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Contextual dependencies in unsupervised word segmentation

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If you have a question about this talk, please contact Philip Sterne .

We will be discussing the paper “Contextual dependencies in unsupervised word segmentation” by Sharon Goldwater, Thomas L. Griffiths and Mark Johnson.

Available from: http://cocosci.berkeley.edu/tom/papers/wordseg1.pdf

Abstract: Developing better methods for segmenting continuous text into words is important for improving the processing of Asian languages, and may shed light on how humans learn to segment speech. We propose two new Bayesian word segmentation methods that assume unigram and bigram models of word dependencies respectively. The bigram model greatly outperforms the unigram model (and previous probabilistic models), demonstrating the importance of such dependencies for word segmentation. We also show that previous probabilistic models rely crucially on sub-optimal search procedures.

This talk is part of the Machine Learning Journal Club series.

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