Fig. 3
From: AI big model and text mining-driven framework for urban greening policy analysis
Topic evolution of urban greening policies in Wuhan (2009–2024). The figure shows the evolution of topics and correlation analysis of greening policies in Wuhan. The streamlines of different colors represent different topics related to greening policies; the thickness of the streamlines indicates variations in the attention of each topic over time; and the intersections between streamlines reveal the correlations and interactions between different topics. By tracing individual streamlines, it is possible to understand how a particular greening topic has evolved from the past to the present as well as anticipate the future trend.
