“…Yang, Tang, Luo, & Law, 2015a), robotic room services (P.-Y. Yang, Chang, Chang, & Wu, 2018), hotel maintenance prediction (Athuraliya & Farook, 2018), , separating real and fake online reviews (Antonio, de Almeida, Nunes, Batista, & Ribeiro, 2018), and predicting hotel energy demand (Casteleiro-Roca et al, 2018), predicting booking cancellation (Antonio, de Almeida, & Nunes, 2019), hotel room prices forecasting (Al Shehhi & Karathanasopoulos, 2020;Antonio, de Almeida, & Nunes, 2017;Lee & Lee, 2020). Many qualitative studies have also been reported such as discussion on artificial intelligence in the hotel industry (Ananeva, 2019;J.…”