Applying piecewise approximation in perceptron training of conditional random fields

  • Authors:
  • Teemu Ruokolainen

  • Affiliations:
  • Department of Information and Computer Science, Aalto University, Aalto, Finland

  • Venue:
  • IDA'12 Proceedings of the 11th international conference on Advances in Intelligent Data Analysis
  • Year:
  • 2012

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Abstract

We show that the recently proposed piecewise approximation approach can benefit conditional random fields estimation using the structured perceptron algorithm. We present experiments in noun-phrase chunking task on the CoNLL-2000 corpus. The results show that, compared to standard training, applying the piecewise approach during model estimation may yield not only savings in training time but also improvement in model performance on test set due to added model regularization.