A probabilistic lexical model for ranking textual inferences

  • Authors:
  • Eyal Shnarch;Ido Dagan;Jacob Goldberger

  • Affiliations:
  • Bar-Ilan University Ramat-Gan, Israel;Bar-Ilan University Ramat-Gan, Israel;Bar-Ilan University Ramat-Gan, Israel

  • Venue:
  • SemEval '12 Proceedings of the First Joint Conference on Lexical and Computational Semantics - Volume 1: Proceedings of the main conference and the shared task, and Volume 2: Proceedings of the Sixth International Workshop on Semantic Evaluation
  • Year:
  • 2012

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Abstract

Identifying textual inferences, where the meaning of one text follows from another, is a general underlying task within many natural language applications. Commonly, it is approached either by generative syntactic-based methods or by "lightweight" heuristic lexical models. We suggest a model which is confined to simple lexical information, but is formulated as a principled generative probabilistic model. We focus our attention on the task of ranking textual inferences and show substantially improved results on a recently investigated question answering data set.