2011

Semi-Supervised Recursive Autoencoders for Predicting Sentiment Distributions

Richard Socher, Jeffrey Pennington, Eric H. Huang, Andrew Y. Ng, Christopher D. Manning

citations

Cite Score

51

AI summary

This paper introduces a novel machine learning framework based on semi-supervised recursive autoencoders (RAE) that learn vector space representations for multi-word phrases, outperforming state-of-the-art on common sentiment datasets and a new experience project (EP) dataset for predicting multidimensional sentiment distributions without predefined sentiment lexica or polarity shifting rules.

Main Contributions

  • Introduced a novel machine learning framework based on recursive autoencoders (RAE) for sentence-level sentiment prediction.
  • The model learns vector space representations for multi-word phrases and exploits hierarchical structure and compositional semantics.
  • Evaluated on standard datasets (movie reviews, MPQA) and a new Experience Project (EP) dataset, achieving state-of-the-art performance.
  • The model predicts a multidimensional distribution over several complex, interconnected sentiments, rather than limiting to a positive/negative scale.
  • The system can be trained on both unlabeled domain data and supervised sentiment data, without requiring language-specific sentiment lexica or polarity shifting rules.

Abstract

We introduce a novel machine learning framework based on recursive autoencoders for sentence-level prediction of sentiment label distributions. Our method learns vector space representations for multi-word phrases. In sentiment prediction tasks these representations outperform other state-of-the-art approaches on commonly used datasets, such as movie reviews, without using any pre-defined sentiment lexica or polarity shifting rules. We also evaluate the model's ability to predict sentiment distributions on a new dataset based on confessions from the experience project. The dataset consists of personal user stories annotated with multiple labels which, when aggregated, form a multinomial distribution that captures emotional reactions. Our algorithm can more accurately predict distributions over such labels compared to several competitive baselines.

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