Measuring urban vitality,combining urban spatial structure and other influencing factors can make planning sugges-tions for stimulating urban vitality.Traditional urban vitality measurement methods are mostly based on static data and local areas,which can not reflect the dynamic changes of the whole city under a certain time scale.This paper proposes a city vitality measurement method based on the Hurst index of geographic interactive network aggregation coefficient of communication data.This method builds a geographic interactive network that can completely cover the city based on the communication data set of local mobile phone users,extracts the network feature sequence under a certain time scale,calculates the Hurst index of the se-quence,and then analyzes the dynamic changes of urban vitality.An experimental analysis is conducted in the Italian cities of Milan and Trento,and it is found that although the Freeman aggregation coefficients of Milan and Trento have the same change trend during the same time period,the Freeman aggregation coefficient and Hurst index of Trento are both greater than that of Milan,indicating that the urban vitality of Milan is better than that of Trento,thus verifying the effectiveness of the method.
关键词
城市活力/地理交互网络/Freeman聚集系数/Hurst指数
Key words
urban vitality/geographic interactive network/Freeman aggregation coefficient/Hurst index
维普
万方数据