Computing semantic compositionality in distributional semantics

  • Authors:
  • Emiliano Guevara

  • Affiliations:
  • University of Oslo

  • Venue:
  • IWCS '11 Proceedings of the Ninth International Conference on Computational Semantics
  • Year:
  • 2011

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Abstract

This article introduces and evaluates an approach to semantic compositionality in computational linguistics based on the combination of Distributional Semantics and supervised Machine Learning. In brief, distributional semantic spaces containing representations for complex constructions such as Adjective-Noun and Verb-Noun pairs, as well as for their constituent parts, are built. These representations are then used as feature vectors in a supervised learning model using multivariate multiple regression. In particular, the distributional semantic representations of the constituents are used to predict those of the complex structures. This approach outperforms the rivals in a series of experiments with Adjective-Noun pairs extracted from the BNC. In a second experimental setting based on Verb-Noun pairs, a comparatively much lower performance was obtained by all the models; however, the proposed approach gives the best results in combination with a Random Indexing semantic space.