Table 1.

Top 10 most frequent keywords in each cluster

Cluster 1	Cluster 2	Cluster 3
Restaurant	Customer satisfaction	Restaurant industry
Consumer behaviour	Service quality	CSR
Hospitality	Behavioral intention	Franchising
Foodservice	Satisfaction	Firm performance
Hotel	Emotion	Financial performance
Tipping	Loyalty	Restaurant type
Innovation	Perceived value	Internationalization
COVID-19	Trust	Job satisfaction
Tourism	Customer loyalty	Moderating effect
Revenue management	Full-service restaurant	Casual dining restaurant

Cluster 4	Cluster 5	Cluster 6
Restaurant management	Green restaurant	Authenticity
Online review	Attitude	Ethnic restaurant
Social media	Theory of planned behavior	Brand equity
eWoM	Restaurant menu	Brand loyalty
Dining experience	Menu labeling	Servicescape
Restaurant service	Green practices	Perceived quality
Service failure	Local food	Brand image
WoM	Gender	Brand trust
Service recovery	Menu design	Perceived authenticity
Restaurant experience	Food choice	Advertisement