10.5281/zenodo.3365683
https://zenodo.org/records/3365683
oai:zenodo.org:3365683
Schulder, Marc
Marc
Schulder
0000-0002-4183-8489
Spoken Language Systems, Saarland University
Wiegand, Michael
Michael
Wiegand
Spoken Language Systems, Saarland University
Ruppenhofer, Josef
Josef
Ruppenhofer
Institute for German Language, Mannheim
Köser, Stephanie
Stephanie
Köser
Spoken Language Systems, Saarland University
Introducing a Lexicon of Verbal Polarity Shifters for English
Zenodo
2018
Sentiment Analysis
Sentiment Polarity
Negation
Lexical Semantics
Lexicon
NLP Resources
2018-05-07
eng
http://www.lrec-conf.org/proceedings/lrec2018/pdf/110.pdf
https://www.aclweb.org/anthology/L18-1222
10.5281/zenodo.3365288
10.5281/zenodo.3365682
https://zenodo.org/communities/natural-language-processing
Creative Commons Attribution Non Commercial 4.0 International
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.
Supplementary Data
Verbal Shifter Lexicon: doi:10.5281/zenodo.3365288
This work was partially supported by the German Research Foundation (DFG) under grants RU 1873/2-1 and WI4204/2-1.