2011 | OriginalPaper | Buchkapitel
Discovering Fine-Grained Sentiment with Latent Variable Structured Prediction Models
verfasst von : Oscar Täckström, Ryan McDonald
Erschienen in: Advances in Information Retrieval
Verlag: Springer Berlin Heidelberg
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In this paper we investigate the use of latent variable structured prediction models for fine-grained sentiment analysis in the common situation where only coarse-grained supervision is available. Specifically, we show how sentence-level sentiment labels can be effectively learned from document-level supervision using hidden conditional random fields (HCRFs) [10]. Experiments show that this technique reduces sentence classification errors by 22% relative to using a lexicon and 13% relative to machine-learning baselines.