Publicação
Impact of gun V«violence on restaurants: LLMs classification perspectives
| Resumo: | 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. |
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| Autores principais: | Gradoli, Elena Maria |
| Assunto: | Gun violence Yelp Restaurants Review Text sentiment Big data Difference-in-differences Staggered difference-in-differences- |
| Ano: | 2025 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso embargado |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| Resumo: | 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. |
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