Article(id=1146098721130905839, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1146500022830469878, articleNumber=null, orderNo=23, doi=10.3981/j.issn.1000-7857.2024.04.00319, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1713542400000, receivedDateStr=2024-04-20, revisedDate=1732809600000, revisedDateStr=2024-11-29, acceptedDate=null, acceptedDateStr=null, onlineDate=1751180828552, onlineDateStr=2025-06-29, pubDate=1743091200000, pubDateStr=2025-03-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1744992000000, onlineIssueDateStr=2025-04-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=1751180828552, onlineFirstDateStr=2025-06-29, sourceXml=null, magXml=null, createTime=1751180828552, creator=18627231156, updateTime=1774079558281, updator=sys-migrate, issue=Issue{id=1146500022830469878, tenantId=1146029695717560320, journalId=1146031591421210625, year='2025', volume='43', issue='6', pageStart='1', pageEnd='100', issueExtLink='null', onlineDate='null', pubDate='1743091200000', pubDateStr='2025-03-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1751276506383, creator='13701087609', updateTime=1774330962150, updator='13041195026', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1243197418926355120, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1146500022830469878, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243197418926355121, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1146500022830469878, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=74, endPage=83, ext={EN=ArticleExt(id=1146098722821210377, articleId=1146098721130905839, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Non-linear relationship between older adults' active travel behavior and the built environment, columnId=1172890533929304542, journalTitle=Science & Technology Review, columnName=Exclusive: Green Building and Urban Governance, runingTitle=null, highlight=null, articleAbstract=
Active travel is a major form of physical activity for older adults as well as an important part of their daily transport. However, the non-linear relationship between their active travel and the built environment has been insufficiently revealed. In this study, by utilizing comprehensive travel survey data in Chengdu and multi-source big data, an interpretable machine learning framework (random forest & SHAP model) was constructed to systematically investigate the non-linear impact of community-level built environment factors on older adults’ active travel propensity. The results showed that accessibility to health facilities, the sidewalk index, and the green view index are the most important three factors of built environment affecting older adults’ active travel. Various elements of built environment had complex non-linear relationship with their active travel propensity of older adults, with a significant threshold effect. The effect of built environment indicators such as accessibility to health facilities and the green view index was asymmetric. Specifically, the inhibitory effect of low values far outweighed the promoting effect of high values. This study laid a theoretical foundation and provided scientific support to develop refined intervention strategies aiming at age-friendly cities.
, authors=null, authorsList=Dong WEI, Linchuan YANG, authorCompany=null, correspAuthors=Linchuan YANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1146098733126615645, articleId=1146098721130905839, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=老年人活力出行行为与建成环境的非线性关系, columnId=1172890534105465311, journalTitle=科技导报, columnName=特色专题:绿色建筑与城市治理, runingTitle=null, highlight=null, articleAbstract=
活力出行不仅是老年人重要的体力活动方式,也是其日常出行的关键组成部分。然而,它与建成环境之间的非线性关系仍未得到充分揭示。研究基于成都市综合交通调查数据及多源大数据,构建可解释机器学习框架(随机森林融合SHAP模型),系统解析社区建成环境对老年人活力出行倾向的非线性影响。结果发现,健康设施可达性、步道率和绿视率是影响老年人活力出行倾向最为显著的建成环境要素。各建成环境变量与老年人活力出行倾向之间均呈现复杂的非线性关系,并表现出显著的“阈值”效应。健康设施可达性和绿视率等指标的影响是非对称的:低值带来的抑制作用远远大于高值的促进作用。
, authors=
, authorsList=魏东, 杨林川, authorCompany=null, correspAuthors=杨林川, authorNote=null, correspAuthorsNote=
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版权所有,未经授权,不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=KwFKC1mEFK7TSZJ6RlMhHw==, magXml=KwFKC1mEFK7TSZJ6RlMhHw==, pdfUrl=null, pdf=7EClZSrNcXdOfJpCSbdyHQ==, pdfFileSize=9208314, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=xvbrYmkWss2jAf1S6KvRlg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=TTFPPgQXRFuCD3bAxFR05Q==, mapNumber=null, fund=null)}, authors=[Author(id=1242142970422571653, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1146098721130905839, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=weidong09@my.swjtu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1242142970498069127, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1146098721130905839, authorId=1242142970422571653, language=EN, stringName=Dong WEI, firstName=Dong, middleName=null, lastName=WEI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Department of Urban and Rural Planning, School of Architecture, Southwest Jiaotong University, Chengdu 611756, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1242142970573566600, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1146098721130905839, authorId=1242142970422571653, language=CN, stringName=魏东, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=西南交通大学建筑学院城乡规划系, 成都 611756, bio={"content":"
魏东, 博士研究生, 研究方向为建成环境与出行行为, 电子信箱: weidong09@my.swjtu.edu.cn
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魏东, 博士研究生, 研究方向为建成环境与出行行为, 电子信箱: weidong09@my.swjtu.edu.cn
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| 分类 | 变量名称 | 变量的定义、解释与赋值方法 | 均值/比例 | 标准差 |
| 因变量 | 活力出行倾向 | 过去24 h内有活力出行=1,无活力出行=0 | 0.679 | 0.467 |
| 自变量(个人/家庭社会经济属性) | 性别 | 男性=1,女性=0 | 0.487 | 0.500 |
| 个人年收入 | 无收入=1,≤1万元=2,1~2万元=3,2~3万元=4,3~5万元=5,5~8万元=6,8~12万元=7,12~20万元=8,≥20万元=9 | 3.868 | 1.168 |
| 家庭规模 | 家庭成员数量,单位:人 | 2.707 | 1.145 |
| 自变量(社区建成环境指标) | 土地利用混合度 | 不同土地使用类型(如住宅、商业、工业)的混合程度,即土地利用熵值 | 0.338 | 0.123 |
| 步道率 | 在街景图像中,人行道所占的比例 | 0.015 | 0.008 |
| 绿视率 | 在街景图像中,绿色植物所占比例 | 0.244 | 0.083 |
| 天空率 | 在街景图像中,可见天空的面积比例 | 0.254 | 0.083 |
| 道路密度 | 道路总长度与社区面积的比例,单位:km/km2 | 6.710 | 3.980 |
| 容积率 | 建筑总面积与社区面积的比例 | 1.531 | 0.564 |
| 健康设施可达性 | 社区内健康服务设施(包括三甲医院、健康中心以及诊所)的数量,单位:个 | 32.785 | 23.559 |
), ArticleFig(id=1242142972712661673, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1146098721130905839, language=CN, label=表1, caption=
变量的解释及描述性统计
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| 分类 | 变量名称 | 变量的定义、解释与赋值方法 | 均值/比例 | 标准差 |
| 因变量 | 活力出行倾向 | 过去24 h内有活力出行=1,无活力出行=0 | 0.679 | 0.467 |
| 自变量(个人/家庭社会经济属性) | 性别 | 男性=1,女性=0 | 0.487 | 0.500 |
| 个人年收入 | 无收入=1,≤1万元=2,1~2万元=3,2~3万元=4,3~5万元=5,5~8万元=6,8~12万元=7,12~20万元=8,≥20万元=9 | 3.868 | 1.168 |
| 家庭规模 | 家庭成员数量,单位:人 | 2.707 | 1.145 |
| 自变量(社区建成环境指标) | 土地利用混合度 | 不同土地使用类型(如住宅、商业、工业)的混合程度,即土地利用熵值 | 0.338 | 0.123 |
| 步道率 | 在街景图像中,人行道所占的比例 | 0.015 | 0.008 |
| 绿视率 | 在街景图像中,绿色植物所占比例 | 0.244 | 0.083 |
| 天空率 | 在街景图像中,可见天空的面积比例 | 0.254 | 0.083 |
| 道路密度 | 道路总长度与社区面积的比例,单位:km/km2 | 6.710 | 3.980 |
| 容积率 | 建筑总面积与社区面积的比例 | 1.531 | 0.564 |
| 健康设施可达性 | 社区内健康服务设施(包括三甲医院、健康中心以及诊所)的数量,单位:个 | 32.785 | 23.559 |
), ArticleFig(id=1242142972779770538, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1146098721130905839, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率 | 精确率 | 召回率 | F1分数 |
| 逻辑回归 | 0.678 | 0.680 | 0.993 | 0.807 |
| 随机森林 | 0.815 | 0.828 | 0.918 | 0.870 |
), ArticleFig(id=1242142972842685099, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1146098721130905839, language=CN, label=表2, caption=
逻辑回归与随机森林模型性能比较
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| 模型 | 准确率 | 精确率 | 召回率 | F1分数 |
| 逻辑回归 | 0.678 | 0.680 | 0.993 | 0.807 |
| 随机森林 | 0.815 | 0.828 | 0.918 | 0.870 |
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