Recursive Deep Models for Semantic Compositionality Over a Sentiment Treebank

R. Socher,Alex Perelygin,Jean Wu,Jason Chuang,Christopher D. Manning,A. Ng,Christopher Potts

Published 2013 in Conference on Empirical Methods in Natural Language Processing

ABSTRACT

Semantic word spaces have been very useful but cannot express the meaning of longer phrases in a principled way. Further progress towards understanding compositionality in tasks such as sentiment detection requires richer supervised training and evaluation resources and more powerful models of composition. To remedy this, we introduce a Sentiment Treebank. It includes fine grained sentiment labels for 215,154 phrases in the parse trees of 11,855 sentences and presents new challenges for sentiment compositionality. To address them, we introduce the Recursive Neural Tensor Network. When trained on the new treebank, this model outperforms all previous methods on several metrics. It pushes the state of the art in single sentence positive/negative classification from 80% up to 85.4%. The accuracy of predicting fine-grained sentiment labels for all phrases reaches 80.7%, an improvement of 9.7% over bag of features baselines. Lastly, it is the only model that can accurately capture the effects of negation and its scope at various tree levels for both positive and negative phrases.

PUBLICATION RECORD

  • Publication year

    2013

  • Venue

    Conference on Empirical Methods in Natural Language Processing

  • Publication date

    2013-10-01

  • Fields of study

    Computer Science

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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