Zobrazeno 1 - 10
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pro vyhledávání: '"CHEN Yanguang"'
Autor:
Chen, Yanguang
The conventional concept of geographical space is mainly referred to actual space based on landscape, maps, and remote sensing images. However, this notion of space is not enough to interpret different types of fractal dimension of cities. The fracta
Externí odkaz:
http://arxiv.org/abs/2308.04063
Autor:
Fu, Meng, Chen, Yanguang
City is proved to be a scale-free phenomenon, and spatial autocorrelation is often employed to analyze spatial redundancy of cities. Unfortunately, spatial analysis results deviated practical requirement in many cases due to fractal nature of cities.
Externí odkaz:
http://arxiv.org/abs/2308.04062
Autor:
Chen, Yanguang
A time series of fractal dimension values of urban form can form a fractal dimension curve and reflects urban growth. In many cases, the fractal dimension curves of cities can be modeled with logistic function, which in turn can be used to make predi
Externí odkaz:
http://arxiv.org/abs/2306.10542
Autor:
Chen, Yanguang
Fractal dimension is an effective scaling exponent of characterizing scale-free phenomena such as cities. Urban growth can be described with time series of fractal dimension of urban form. However, how to explain the factors behind fractal dimension
Externí odkaz:
http://arxiv.org/abs/2306.10541
In this paper, we propose a Pre-trained Mixed Integer Optimization framework (PreMIO) that accelerates online mixed integer program (MIP) solving with offline datasets and machine learning models. Our method is based on a data-driven multi-variable c
Externí odkaz:
http://arxiv.org/abs/2305.12352
Autor:
Chen, Yanguang
Fractal geometry proved to be an effective mathematical tool for exploring real geographical space based on digital maps and remote sensing images. Whether the fractal theory tool can be applied to abstract geographical space has not been reported. A
Externí odkaz:
http://arxiv.org/abs/2212.01813
Autor:
Chen, Yanguang
Moran's index is a basic measure of spatial autocorrelation, which has been applied to varied fields of both natural and social sciences. A good measure should have clear boundary values or critical value. However, for Moran's index, both boundary va
Externí odkaz:
http://arxiv.org/abs/2209.08562
Autor:
Chen, Yanguang
Based on standardized vector and globally normalized weight matrix, Moran's index of spatial autocorrelation analysis has been expressed as a formula of quadratic form. Further, based on this formula, an inner product equation and outer product equat
Externí odkaz:
http://arxiv.org/abs/2209.08560
Autor:
Jiang, Bolong a, b, c, d, ⁎, Zhang, Yuhan a, b, Jiang, Nan b, Li, Jiayou a, b, Chen, Yanguang c
Publikováno v:
In Journal of Alloys and Compounds 15 October 2024 1002
Autor:
Zheng, Shuo, Wang, Haiping, Sun, Shirong, Chang, Ziyang, Chen, Xiaohong, Chen, Jianbin, Zhao, Huifang, Sha, Lizheng, Guo, Daliang, Chen, Yanguang, Tian, Qingquan
Publikováno v:
In International Journal of Biological Macromolecules February 2025 289