用街景图像分析居民选址偏好,发现市中心环境不优却房价高。
A utility-based spatial analysis of residential street-level conditions; A case study of Rotterdam
- 结合计算机视觉与选择模型,量化街道级环境对居住选择的效用。
- 市中心房价高并非因街道环境好,南部城区街景反而更吸引人。
- 新方法提升可解释性,无需额外图像处理流程,适合城市规划研究。
传统居住地选择模型多关注可达性与社会经济因素,忽视了街道级环境的影响,部分原因在于数据获取困难。如今,街景图像广泛可用,且结合计算机视觉的离散选择模型发展迅速,为纳入街道环境提供了可能。本研究以荷兰鹿特丹为例,从全市尺度分析街道级环境带来的居住效用分布。结果显示,街道环境效用在极小范围内差异显著,甚至同一社区内变化迅速;市中心虽房价高昂,但街道环境并不吸引人;而常被视为问题区域的南部城区,反而展现出较宜人的街道环境。方法上,论文通过引入语义正则化层改进离散选择模型,增强了可解释性,并省去图像信息提取的独立流程,简化分析链条。该研究为未来将街道级环境融入城市规划提供了新路径。
原文摘要 · Abstract (English)
Residential location choices are traditionally modelled using factors related to accessibility and socioeconomic environments, neglecting the importance of local street-level conditions. Arguably, this neglect is due to data practices. Today, however, street-level images -- which are highly effective at encoding street-level conditions -- are widely available. Additionally, recent advances in discrete choice models incorporating computer vision capabilities offer opportunities to integrate street-level conditions into residential location choice analysis. This study leverages these developments to investigate the spatial distribution of utility derived from street-level conditions in residential location choices on a city-wide scale. In our case study of Rotterdam, the Netherlands, we find that the utility derived from street-level conditions varies significantly on a highly localised scale, with conditions rapidly changing even within neighbourhoods. Our results also reveal that the high real-estate prices in the city centre cannot be attributed to attractive street-level conditions. Furthermore, whereas the city centre is characterised by relatively unattractive residential street-level conditions, neighbourhoods in the southern part of the city -- often perceived as problematic -- exhibit surprisingly appealing street-level environments. The methodological contribution of this paper is that it advances the discrete choice models incorporating computer vision capabilities by introducing a semantic regularisation layer to the model. Thereby, it adds explainability and eliminates the need for a separate pipeline to extract information from images, streamlining the analysis. As such, this paper's findings and methodological advancements pave the way for further studies to explore integrating street-level conditions in urban planning.
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