4.6 Article

The Traj2Vec model to quantify residents' spatial trajectories and estimate the proportions of urban land-use types

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/13658816.2020.1726923

关键词

Mixed urban land-use patterns; mobile phone positioning data; residents' spatial trajectories; traj2vec; geo-semantic mining

资金

  1. Key National Natural Science Foundation of China [41531176]
  2. National Key R&D Program of China [2017YFA0604402]
  3. National Natural Science Foundation of China [41801306]

向作者/读者索取更多资源

The Traj2Vec method and random forest model can accurately quantify the semantic vectors of residents' trajectories and effectively classify mixed urban land use. The study shows that Shenzhen has a high degree of mixed urban land use at the street block scale, emphasizing that urban planning should focus on mixed land use to reduce residents' travel distances, lower energy consumption, and make cities more compact.
The formulation of mixed urban land uses is not only intended to find the ideal scenario of land use but also regarded as a way toward sustainable urban development. We propose a geo-semantic mining approach Traj2Vec to quantify the trajectories of residents as high-dimensional semantic vectors. Then, a random forest (RF) method is used to model the relationship between the semantic vectors and mixed urban land uses. The proposed Traj2Vec approach can obtain the highest accuracy (OA = 0.7733, kappa = 0.7245) in urban land-use classification and a high average proportion accuracy (64.0%) in capturing the proportions of urban land-use types. Diversity analysis indicates that Shenzhen has a high degree of mixed urban land use at the scale of a street block. By analyzing the mixing index and the travel distance, we find a weak but significant negative correlation between them (), which not only confirms the conclusion that an increase in the degree of mixing will reduce the travel distances of residents but also verifies the mixing index. This suggests that urban planning should focus on mixed urban land uses, which can reduce the travel distances of residents, reduce energy consumption, and make cities more compact.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据