494 citations · 2.4k across the 84 of their papers we have counts for
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Gravitational and Autoregressive Analysis Spatial Diffusion of COVID-19 in Hubei Province, China
Yanguang Chen, Yajing Li, Yuqing Long +1
The spatial diffusion of epidemic disease follows distance decay law in geography, but different diffusion processes may be modeled by different mathematical functions under differ…
Modeling Urban Growth and Socio-Spatial Dynamics of Hangzhou: 1964-2010
Jian Feng, Yanguang Chen
Urban population density provides a good perspective for understanding urban growth and socio-spatial dynamics. Based on sub-district data of the five times of national population…
Spatial Signal Analysis based on Wave-Spectral Fractal Scaling: A Case of Urban Street Networks
Yanguang Chen, Yuqing Long
For a long time, many methods are developed to make temporal signal analyses based on time series. However, for geographical systems, spatial signal analyses are as important as te…
Fractal-based modeling and spatial analysis of urban form and growth: a case study of Shenzhen in China
Xiaoming Man, Yanguang Chen
Fractal dimension curves of urban growth can be modeled with sigmoid functions, including logistic function and quadratic logistic function. Different types of logistic functions i…
Multifractal scaling analyses of the spatial diffusion pattern of COVID-19 pandemic in Chinese mainland
Yuqing Long, Yanguang Chen, Yajing Li
Revealing spatiotemporal evolution regularity in the spatial diffusion of epidemics is helpful for preventing and controlling the spread of epidemics. Based on the real-time COVID-…
Exploring the Level of Urbanization Based on Zipf's Scaling Exponent
Yanguang Chen
The rank-size distribution of cities follows Zipf's law, and the Zipf scaling exponent often tends to a constant 1. This seems to be a general rule. However, a recent numerical exp…
Modeling Urban Growth and Form with Spatial Entropy
Yanguang Chen
Entropy is one of physical bases for fractal dimension definition, and the generalized fractal dimension was defined by Renyi entropy. Using fractal dimension, we can describe urba…
Derivation of Relations between Scaling Exponents and Standard Deviation Ratios
Yanguang Chen
The law of allometric growth is one of basic rules for understanding urban evolution. The general form of this law is allometric scaling law. However, the deep meaning and underlyi…
Multifractal scaling analyses of urban street network structure: the cases of twelve megacities in China
Yuqing Long, Yanguang Chen
Traffic networks have been proved to be fractal systems. However, previous studies mainly focused on monofractal networks, while complex systems are of multifractal structure. This…
Geographical Analysis: from Distance-based Space to Dimension-based Space
Yanguang Chen
The traditional concept of space in geography is based on the notion of distance. Where there is a spatial analysis, there is a distance measurement. However, the precondition for…
Geographical Modeling: from Characteristic Scale to Scaling
Yanguang Chen
Geographical research was successfully quantified through the quantitative revolution of geography. However, the succeeding theorization of geography encountered insurmountable dif…
An Integrated Framework of Spatial Autocorrelation Analysis Based on Gravity Model
Yanguang Chen
Spatial interaction and spatial autocorrelation are two different fields of geo-spatial analysis, revealing the internal relationship between the two fields will help to develop th…
Characteristic Scales, Scaling, and Geospatial Analysis
Yanguang Chen
Geographical phenomena fall into two categories: scaleful phenomena and scale-free phenomena. The former bears characteristic scales, and the latter has no characteristic scale. Th…
An Analytical Process of Spatial Autocorrelation Functions Based on Moran's Index
Yanguang Chen
A number of spatial statistic measurements such as Moran's I and Geary's C can be used for spatial autocorrelation analysis. Spatial autocorrelation modeling proceeded from the 1-d…