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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hogenboom, A. van Iterson, P. Heerschop, B. Frasincar, F. Kaymak, U. |
| Copyright Year | 2011 |
| Description | Author affiliation: Erasmus University Rotterdam, The Netherlands (Hogenboom, A.; van Iterson, P.; Heerschop, B.; Frasincar, F.; Kaymak, U.) |
| Abstract | A key element for decision makers to track is their stakeholders' sentiment. Recent developments show a tendency of including various aspects other than word frequencies in automated sentiment analysis approaches. One of these aspects is negation, which can be accounted for in various ways. We compare several approaches to accounting for negation in sentiment analysis, differing in their methods of determining the scope of influence of a negation keyword. On a set of English movie review sentences, the best approach is to consider two words, following a negation keyword, to be negated by that keyword. This method yields a significant increase in overall sentiment classification accuracy and macro-level F of 5.5% and 6.2%, respectively, compared to not accounting for negation. Additionally optimizing sentiment modification of negated words to a value of −1.27 rather than −1 yields a significant 7.1% increase in accuracy and a significant 8.0% increase in macro-level F. |
| Starting Page | 2589 |
| Ending Page | 2594 |
| File Size | 365824 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781457706523 |
| ISSN | 1062922X |
| e-ISBN | 9781457706530 |
| DOI | 10.1109/ICSMC.2011.6084066 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-10-09 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Accuracy Semantics Context Motion pictures Natural languages Data mining Algorithm design and analysis negation strength Sentiment analysis negation scope |
| Content Type | Text |
| Resource Type | Article |
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