检索结果-南通市图书馆

Latent spatio-temporal activity structures: a new approach to inferring intra-urban functional regions via social media check-in data

引用

Geo-Spatial Information Science 2016年第2期19卷中插1-中插1,94-105页

作者： Ye Zhi Haifeng Li Dashan Wang Min Deng Shaowen Wang Jing Gao Zhengyu Duan Yu Liu Road Traffic Safety Research Center of the Ministry of Public Security BeijingChina School of Geosciences and Info-Physics Central South UniversityChangshaChina CyberGIS Center for Advance Digital and Spatial Studies University of Illinois at Urbana-ChampaignUrbanaILUSA Key Laboratory of Road and Traffic Engineering of the Ministry of Education Tongji UniversityShanghaiChina Institute of Remote Sensing and Geographical Information Systems Peking UniversityBeijingChina

This article introduces a novel low rank approximation (LRA)-based model to detect the functional regions with the data from about 15 million social media check-in records during a year-long period in Shanghai, China. We identified a series of latent structures, named latent spatio-temporal activity structures. While interpreting these structures, we can obtain a series of underlying associations between the spatial and temporal activity patterns. Moreover, we can not only reproduce the observed data with a lower dimensional representative, but also project spatio-temporal activity patterns in the same coordinate system. With the K-means clustering algorithm, five significant types of clusters that are directly annotated with a combination of temporal activities can be obtained, providing a clear picture of the correlation between the groups of regions and different activities at different times during a day. Besides the commercial and transportation dominant areas, we also detected two kinds of residential areas, the developed residential areas and the developing residential *** further interpret the spatial distribution of these clusters using urban form analytics. The results are highly consistent with the government planning in the same periods, indicating that our model is applicable to infer the functional regions from social media check-in data and can benefit a wide range of fields, such as urban planning, public services, and location-based recommender systems.

关键词： Human activity pattern functional region low rank approximation (LRA) social media check-in data Shanghai

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

乘机别忘check-in

引用

航空世界 2019年第2期 18-19页

作者：卓娅不详

随着生活水平的提高,出国旅行成为越来越多中国家庭假期的假日选择。出国旅行的主要交通工具就是飞机。小朋友们跟随父母亲在国外乘机,了解一些国外机场常用的英语表达是非常有帮助的。今天我们就来讲讲在国外机场乘机最重要的环节:chec... 详细信息

随着生活水平的提高,出国旅行成为越来越多中国家庭假期的假日选择。出国旅行的主要交通工具就是飞机。小朋友们跟随父母亲在国外乘机,了解一些国外机场常用的英语表达是非常有帮助的。今天我们就来讲讲在国外机场乘机最重要的环节:check-in。在机场,这个词可以理解为'办理登机手续'。

关键词：出发层 check-in

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Diversifying Top-κRoutes with Spatial Constraints

引用

Journal of Computer Science & Technology 2019年第4期34卷 818-838页

作者： Hong-Fei Xu Yu Gu Jian-Zhong Qi Jia-Yuan He Ge Yu College of Computer Science and Engineering Northeastern UniversityShenyang 110169China Department of Computing and Information Systems The University of MelbourneMelbourneVIC 3010Australia

Trip recommendation has become increasingly popular with the rapid growth of check-in data in location-based social *** existing studies focused only on the popularity of *** this paper,we consider further the usability of trip recommendation results through spatial *** thereby formulate a new type of queries named spatial diversified top-κroutes(SDκR)*** type of queries finds k trip routes with the highest popularity,each of which starts at a given starting point,consumes travel time within a given time budget,and passes through points of interest(POIs)of given *** two trip routes returned are diversified to a certain degree defined by the spatial distance between the two *** show that the SDkR problem is *** propose two precise algorithms to solve the *** first algorithm starts with identifying all candidate routes that satisfy the query constraints,and then searches for theκ-route combination with the highest *** second algorithm identifies the candidate routes and builds up the optimalκ-route combination progressively at the same ***,we propose an approximate algorithm to obtain even higher query efficiency with precision *** demonstrate the effectiveness and efficiency of the proposed algorithms on real *** experimental results show that our algorithms find popular routes with diversified POI *** approximate algorithm saves up to 90%of query time compared with the baseline algorithms.

关键词： trip recommendation spatial diversity route search check-in data

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

User Account Linkage Across Multiple Platforms with Location Data

引用

Journal of Computer Science & Technology 2020年第4期35卷 751-768页

作者： Wei Chen Weiqing Wang Hongzhi Yin Jun-Hua Fang Lei Zhao Institute of Artificial Intelligence School of Computer Science and TechnologySoochow UniversitySuzhou 215006China Faculty of Information Technology Monash UniversityMelbourne 3000Australia School of Information Technology and Electrical Engineering The University of QueenslandBrisbane 4072Australia

Linking user accounts belonging to the same user across different platforms with location data has received significant attention,due to the popularization of GPS-enabled devices and the wide range of applications benefiting from user account linkage(e.g.,cross-platform user profiling and recommendation).Different from most existing studies which only focus on user account linkage across two platforms,we propose a novel model ULMP(i.e.,user account linkage across multiple platforms),with the goal of effectively and efficiently linking user accounts across multiple platforms with location *** of the practical significance brought by successful user linkage across multiple platforms,this task is very challenging compared with the ones across two *** major challenge lies in the fact that the number of user combinations shows an explosive growth with the increase of the number of *** tackle the problem,a novel method GTkNN is first proposed to prune the search space by efficiently retrieving top-k candidate user accounts indexed with well-designed spatial and temporal index ***,in the pruned space,a match score based on kernel density estimation combining both spatial and temporal information is designed to retrieve the linked user *** extensive experiments conducted on four real-world datasets demonstrate the superiority of the proposed model ULMP in terms of both effectiveness and efficiency compared with the state-of-art methods.

关键词： user account linkage multiple platform check-in record

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hotel Guest Service Technology

引用

Economics World 2018年第3期6卷 185-190页

作者： Manana Vasadze Ia Mosashvili Tsiuri Duruli Georgian Technical University TbilisiGeorgia Gori State Teaching University GoriGeorgia

For any hotel guest reception technology is an important factor in the quality service process,financial-economic efficiency,and management of the hotel *** service process in the same type hotel is standard,meanwhile the service process technology undergoes certain alterations according to the hotel’s size,structure,category,and market segment *** customer service technology is characterized by cycling phases—consistent repeat of the service process before the departure of the guest from the *** article discusses the four-phase cycle of guest reception,related to the hotel services and *** phase of the cycle consists of standard transactions/phases,which are carried out between hotel clients and the hotel itself.

关键词： guest service technology phase cycle property management system remote check-in pre-key/key pack individual call-in reservation rooming list reservations guest-directed computer check-out

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

社交App中LBS用户隐私关注的影响因素研究

社交App中LBS用户隐私关注的影响因素研究

引用

作者：安昭宇山东财经大学

学位级别：硕士

随着互联网和移动通信技术的飞速发展,LBS(Location-Based Service,基于位置的服务)逐渐融入了人们的生活,然而用户地理位置信息的不断公开引起了用户对隐私泄露的关注,进而影响了产品的用户黏性。目前信息系统领域中针对LBS隐私关注的... 详细信息

随着互联网和移动通信技术的飞速发展,LBS(Location-Based Service,基于位置的服务)逐渐融入了人们的生活,然而用户地理位置信息的不断公开引起了用户对隐私泄露的关注,进而影响了产品的用户黏性。目前信息系统领域中针对LBS隐私关注的研究大都集中在技术层面,从用户角度出发的探索较少。本文拟回答以下问题:用户使用LBS的规律、特点、动机、需求;影响用户使用LBS的因素;影响用户LBS隐私关注的因素以及影响程度。研究分为两阶段,第一阶段进行探索性研究,从用户角度出发,针对用户使用社交App中LBS时的隐私关注行为,借鉴以用户为中心的设计方法(UCD,User Centered Design),结合在线数据分析、访谈法、日志法,对8名样本用户进行跟踪调查,以探明社交App中LBS用户隐私关注的影响因素;第二阶段进行验证性研究,在第一阶段的基础上,结合文献归纳建立了假设,提出LBS用户隐私关注影响机理概念模型,采用问卷法收集数据,并用Visual PLS数据处理以验证模型。最终得到了LBS服务质量、信任与感知风险3个维度下共10项影响LBS隐私关注的因素以及各因素之间的关系。阶段一的研究发现:用户在使用LBS时存在一定的隐私忧虑,通过用户角色的建立,提取出了若干影响因素,并归类为LBS服务质量,感知风险和信任。阶段二的研究发现:各个假设都得到显著支持,说明探索性研究阶段提取出的因素均从一定程度上影响LBS隐私关注,且LBS隐私关注程度的降低可以从LBS服务质量、感知风险、信任3个维度的若干途径实现。本研究突破了传统匿名性研究框架,以真实性为基础对LBS隐私问题进行研究。这对全面理解LBS用户的隐私关注行为规律具有理论意义,对社交App的LBS功能开发设计具有实际指导意义。

关键词：移动社交 LBS check-in 隐私关注隐私保护

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：