Abstract

This chapter focuses on measuring the effect of discourse structure on sentiment analysis. Discourse structure is essential in determining the content conveyed by a text. It affects for example, the temporal structure of a text, the interpretation of anaphoric expressions and pre-suppositions. Discourse structure has been shown to be useful in many NLP applications, such as automatic text summarization and textual entailment. This chapter focuses on measuring the effect of discourse structure on sentiment analysis. It presents the annotation scheme and then describes the corpus. The chapter presents the data, and describes the annotation campaign. It then gives the results of annotation campaign along with the observations. The sentence level is not appropriate for analyzing opinions in discourse since, in addition to objective clauses, a single sentence may contain several opinion clauses that can be connected by rhetorical relations. Keywords: anaphoric expressions; annotation campaign; discourse structure; NLP applications; opinions; presuppositions; sentiment analysis

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