Publicação
Impact of gun violence on restaurants: a yelp-based study on review length
| datacite.subject.fos | Ciências Sociais::Economia e Gestão | |
| dc.contributor.advisor | Batikas, Michail | |
| dc.contributor.author | Nitsch, Nicholas | |
| dc.date.accessioned | 2026-04-02T10:30:52Z | |
| dc.date.available | 2026-04-02T10:30:52Z | |
| dc.date.issued | 2025-01-16 | |
| dc.date.submitted | 2025-02-16 | |
| dc.description.abstract | This paper examines how mass shootings influence consumer perceptions of restaurants using over 900,000 Yelp reviews from 50,000 U.S. restaurants. Staggered Difference-in-Differences (DiD) and sentiment analysis (VADER, BERT) are employed to assess changes in sentiment, review length, ratings, and frequency at distances of 5 km, 10 km, and 20 km post-incident. Contrary to expectations, limited evidence is found that mass shootings significantly affect sentiment, ratings, or review volume. Although minor shifts occur—fewer food-oriented comments and occasional mentions of shootings—no consistent negative patterns emerge. These findings suggest subtler or undetected impacts not fully captured by online reviews. | eng |
| dc.identifier.tid | 204133831 | |
| dc.identifier.uri | http://hdl.handle.net/10362/202011 | |
| dc.language.iso | eng | |
| dc.relation | UID/ECO/00124/2013 | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Gun violence | |
| dc.subject | Yelp | |
| dc.subject | Restaurants | |
| dc.subject | Review | |
| dc.subject | Text sentiment | |
| dc.subject | Big data | |
| dc.subject | Difference-in-differences | |
| dc.subject | Staggered difference-in-differences | |
| dc.subject | Consumer «behavior | |
| dc.subject | Online word of mouth | |
| dc.subject | Gun violence archive | |
| dc.subject | NLP | |
| dc.subject | Causal inference | |
| dc.subject | VADER | |
| dc.subject | Business analytics | |
| dc.subject | Business and data analytics | |
| dc.subject | Data | |
| dc.subject | Data visualization | |
| dc.subject | LLM | |
| dc.subject | Mistral | |
| dc.subject | BERT | |
| dc.title | Impact of gun violence on restaurants: a yelp-based study on review length | eng |
| dc.type | master thesis | |
| dspace.entity.type | Publication | |
| thesis.degree.name | A Work Project, presented as part of the requirements for the Award of a Master’s degree in Business Analytics from the Nova School of Business and Economics |