Valence shifting

is it a valid task?

Mary Gardiner, Mark Dras

Research output: Contribution to journalConference paper

Abstract

This paper looks at the problem of valence shifting, rewriting a text to preserve much of its meaning but alter its sentiment characteristics. There has only been a small amount of previous work on the task, which appears to be more difficult than researchers anticipated, not least in agreement between human judges regarding whether a text had indeed had its valence shifted in the intended direction. We therefore take a simpler version of the task, and show that sentiment-based lexical paraphrases do consistently change the sentiment for readers. We then also show that the Kullback-Leibler divergence makes a useful preliminary measure of valence that corresponds to human judgements.
Original languageEnglish
Pages (from-to)42-51
Number of pages10
JournalProceedings of the Australasian Language Technology Association Workshop 2012 : ALTA 2012
Volume10
Publication statusPublished - 2012
EventAustralasian Language Technology Workshop (10th : 2012) - Dunedin, New Zealand
Duration: 4 Dec 20126 Dec 2012

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