The "City-Suburb" Tourist Flow Network Structure Characteristics in the Guangdong-Hong Kong-Macao Greater Bay Area in the Post-Pandemic Era: Analysis Based on the Network Digital Footprint

To explore the movement of "city-suburb" tourism flow in the post-pandemic period, this study examines the tourist flow network of the Guangdong-Hong Kong-Macao Greater Bay Area from 2018 to 2021 based on online travel data. After screening and deduplication, 4882 valid travelogues were chosen and divided into pre-pandemic data (3,967 articles) and post-pandemic data (915 articles) using November 2019 as the dividing line. A total of 4,461 attractions on Ctrip.com were selected to build a scenic spot database of the Guangdong-Hong Kong-Macao Greater Bay Area, including the full names, aliases (common names), and city names of scenic spots. After matching the travelogues with the scenic spots in the attraction database, it was found that 1848 attractions appeared in the travel notes, and the top 300 attractions were chosen for the generation of tourism routes according to the number of matches. After converting travel routes to a directed connectivity matrix and the following dichotomization procedure, a socia