# Detecting negation scope is easy, except when it isn't

Several corpora have been annotated with negation scope{---}the set of words whose meaning is negated by a cue like the word {}not{''}{---}leading to the development of classifiers that detect negation scope with high accuracy. We show that for nearly all of these corpora, this high accuracy can be attributed to a single fact: they frequently annotate negation scope as a single span of text delimited by punctuation... (read more)

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