Optimising natural language generation decision making for situated dialogue

  • Authors:
  • Nina Dethlefs;Heriberto Cuayáhuitl;Jette Viethen

  • Affiliations:
  • University of Bremen;German Research Centre for Artificial Intelligence (DFKI);Acquarie University

  • Venue:
  • SIGDIAL '11 Proceedings of the SIGDIAL 2011 Conference
  • Year:
  • 2011

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Abstract

Natural language generators are faced with a multitude of different decisions during their generation process. We address the joint optimisation of navigation strategies and referring expressions in a situated setting with respect to task success and human-likeness. To this end, we present a novel, comprehensive framework that combines supervised learning, Hierarchical Reinforcement Learning and a hierarchical Information State. A human evaluation shows that our learnt instructions are rated similar to human instructions, and significantly better than the supervised learning baseline.