Method for identifying urban land vigor mode and influence factors

Abstract

The invention discloses a method for identifying an urban land vigor mode and influence factors. The method comprises the following steps: extracting and clustering features of urban space-time vigorintensity data; vector data of an urban land utilization mode are obtained, under the condition of a unified coordinate system, various data are subjected to space fusion and are fused and unified into the same research unit, a progressive gradient regression model of an urban vitality influence mechanism is constructed, and main influence factors and combination modes of different vitality modesare analyzed. The first half part of the method utilizes a non-negative matrix factorization technology; small-scale fine dynamic feature extraction in a large range can be realized quickly and accurately; an equivalent matrix after dimension reduction is provided for later effective clustering; and the extracted features have realistic interpretability due to non-negative constraints applied in the method, and the progressive gradient regression model proposed in the second half part is suitable for checking multiple linear or nonlinear correlation relationships among multiple elements, can analyze main influence factors of different vitality modes, and has higher accuracy.

Description

technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a method for identifying urban land use vitality patterns and influencing factors. Background technique [0002] As China's urbanization process enters a new stage of quality improvement, urban vitality is considered to be one of the important qualities to measure the quality of a city. Beijing, Shanghai, Shenzhen and many other places have issued corresponding guidance to promote the development of nighttime economy in order to enhance the vitality of cities. The most direct representation of urban vitality is the spatial distribution of crowd activities, and it is also affected by various material elements of the urban built environment. [0003] Therefore, for urban planners, it is of great significance to understand the status quo of urban vitality and to study the influence mechanism of planning elements in the urban built environment on urban vitality f...

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