Adaptive parameters for entity recognition with perceptron HMMs

  • Authors:
  • Massimiliano Ciaramita;Olivier Chapelle

  • Affiliations:
  • Google, Zürich, Switzerland;Yahoo! Research, Sunnyvale, CA

  • Venue:
  • DANLP 2010 Proceedings of the 2010 Workshop on Domain Adaptation for Natural Language Processing
  • Year:
  • 2010

Quantified Score

Hi-index 0.01

Visualization

Abstract

We discuss the problem of model adaptation for the task of named entity recognition with respect to the variation of label distributions in data from different domains. We investigate an adaptive extension of the sequence perceptron, where the adaptive component includes parameters estimated from unlabelled data in combination with background knowledge in the form of gazetteers. We apply this idea empirically on adaptation experiments involving two newswire datasets from different domains and compare with other popular methods such as self training and structural correspondence learning.