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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 lexicaldblp:conf/acl-alta/GardinerD12 fatcat:75l5rbzs5ncvph5d5leqbcrin4