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Introducing a lexicon of verbal polarity shifters for English

  • The sentiment polarity of a phrase does not only depend on the polarities of its words, but also on how these are affected by their context. Negation words (e.g. not, no, never) can change the polarity of a phrase. Similarly, verbs and other content words can also act as polarity shifters (e.g. fail, deny, alleviate). While individually more sparse, they are far more numerous. Among verbs alone, there are more than 1200 shifters. However, sentiment analysis systems barely consider polarity shifters other than negation words. A major reason for this is the scarcity of lexicons and corpora that provide information on them. We introduce a lexicon of verbal polarity shifters that covers the entirety of verbs found in WordNet. We provide a fine-grained annotation of individual word senses, as well as information for each verbal shifter on the syntactic scopes that it can affect.

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Author:Marc Schulder, Michael Wiegand, Josef RuppenhoferGND, Stephanie Köser
Parent Title (English):Proceedings of the eleventh international conference on language resources and evaluation (LREC 2018), 7-12 May 2018, Miyazaki, Japan
Publisher:European language resources association (ELRA)
Place of publication:Paris, France
Editor:Nicoletta Calzolari, Khalid Choukri, Christopher Cieri, Thierry Declerck, Sara Goggi, Koiti Hasida, Hitoshi Isahara, Bente Maegaard, Joseph Mariani, Hélène Mazo, Asuncion Moreno, Jan Odijk, Stelios Piperidis, Takenobu Tokunaga
Document Type:Part of a Book
Year of first Publication:2018
Date of Publication (online):2018/05/25
Tag:Negation; lexical semantics; lexicon; polarity shifter; sentiment analysis
GND Keyword:Englisch; Negation; Polarität; Semantische Analyse
First Page:1393
Last Page:1397
DDC classes:400 Sprache / 400 Sprache, Linguistik
Open Access?:ja
Leibniz-Classification:Sprache, Linguistik
Licence (English):License LogoCreative Commons - Attribution-NonCommercial 4.0 International