Research on Dynamic Interaction Characteristics of Urban Leisure Areas Based on Spatio-Temporal Trajectory Clustering Algorithm
The phenomenon of interactions in urban leisure areas is conducive to understand the interaction between urban leisure activities and complex leisure system.The existing studies on urban leisure focus on the static spatial distribution pattern but lack the exploration of spatial dynamic interaction and functional dynamic interaction.Therefore,the study proposes a research framework to analyze the spatial and functional dynamic interaction characteristics of urban leisure areas from the mobility perspective by taxi data.First,we give semantic information to the trajectory points of cabs.Next,a network of similar trajectories is constructed.Then,the Louvain algorithm is introduced to cluster the leisure trajectories.Finally,based on the clustering results and their semantic information,the dynamic interaction characteristics of urban leisure space and leisure function are analyzed.The findings show that:(1)there are strong spatial agglomeration effect in the urban leisure facilities,which is related but different.(2)The low-intensity shrunken interaction pattern before dawn is dominated by short-distance spatial interactions.The spatial interaction scale is expanding and the mid-distance interactions are prominent in the morning low-intensity expansive interaction pattern and afternoon high-intensity expansive interaction pattern.Additionally,the distribution of short-distance interaction is expanding in the night high-intensity shrunken interaction pattern.(3)Among the spatial interaction patterns,catering and shopping leisure functions interact strongly,and other leisure functions tend to interact with them.The cultural and recreational leisure function had the strongest interaction power in pattern 1 and the tour function interacted significantly with other leisure functions in the long-distance spatial interaction in patterns 2,pattern 3 and patterns 4.Except for pattern 2,long distance had a greater influence on the interaction power of accommodation leisure,while the interaction of health care leisure varied stably with pattern and distance.This paper is a guide to the optimal layout of urban leisure space,the planning of leisure functions and the promotion of sustainable development of urban leisure industries.