2015 IEEE 18th International Conference on Intelligent Transportation Systems最新文献_第9页

Modeling Temporal Flow Assignment in Metro Networks Using Smart Card Data 基于智能卡数据的城域网络时间流分配建模

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.141

Lijun Sun, J. Jin

{"title":"Modeling Temporal Flow Assignment in Metro Networks Using Smart Card Data","authors":"Lijun Sun, J. Jin","doi":"10.1109/ITSC.2015.141","DOIUrl":"https://doi.org/10.1109/ITSC.2015.141","url":null,"abstract":"Understanding passenger flow assignment patterns in a complex metro network is crucial to maintaining service reliability and developing efficient response during disruption. In reality passengers' perception of different cost attributes may vary with time. This paper focuses on quantifying the temporal variation of passenger route choice behavior and its impact on overall passenger flow assignment. In order to efficiently estimate model parameters, we modify a previous model to a missing data problem by introducing latent variable on route choice outcomes for each travel time observation. The revised model can be estimated using the Expectation-Maximization (EM) algorithm. We apply the proposed framework on Singapore's metro system and temporal grouped smart card transactions. We find that route choice coefficients vary substantially with time. The relative value of transfer time in terms of in-vehicle time ranges from 2 to 3, being higher at off-peak hours than during morning/evening peaks. The result suggests that passenger care more about total travel time during peak hours, whereas comfort (e.g., less transfer time) is of more concern to users during off-peaks. The proposed framework is general and can be applied on other networks.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127481358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Vision-Based Identification and Application of the Leader Vehicle in Urban Environment 城市环境中基于视觉的先导车辆识别及应用

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.162

Chunzhao Guo, K. Kidono, Masaru Ogawa

引用次数: 2

An Evolutionary Multi-objective Approach for Stochastic Air Traffic Network Flow Optimization 随机空中交通网络流优化的进化多目标方法

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.333

Mingming Xiao, Kaiquan Cai, F. Linke

{"title":"An Evolutionary Multi-objective Approach for Stochastic Air Traffic Network Flow Optimization","authors":"Mingming Xiao, Kaiquan Cai, F. Linke","doi":"10.1109/ITSC.2015.333","DOIUrl":"https://doi.org/10.1109/ITSC.2015.333","url":null,"abstract":"The Stochastic Air Traffic Network Flow Optimization (SATNFO) problem aims to seek a set of optimum and robust flight plans to ensure a safe, orderly and expeditious air traffic flow in the presence of uncertainties. Due to the very natures of multi-objective, large-scale and non-separable in the SATNFO problem, this paper sparks an evolutionary multi-objective optimization way for solving it. Firstly, we formulate it as a multi-objective problem, with performance and robustness as separate goals. In this model, robustness, which indicates the ability of a flight plan to cope with negative effects of uncertainty, is quantified and introduced as an objective. And, two conflicting performance objectives, i.e., minimizing the workload as well as the flight delays over the network, are involved. Then, we present an adaptive metaheuristic algorithm, termed as aNSGA-II, to solve the SATNFO problem. In aNSGA-II, a parameter adaptive mechanism is designed to dynamically adjust the probability of crossover and mutation based on problem context and evolution mechanism. It helps to balance exploitation and exploration during the evolutionary process, and thus maintain diversity of solutions and improve the convergence performance of the algorithm. Empirical studies using real data of flights and network in China are carried out, and show ability of our approach in providing efficient and robust flight plans and supporting better decision-making for air traffic controllers in a stochastic scenario.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129087345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Assistive Pedestrian Crossings by Means of Stereo Localization and RFID Anonymous Disability Identification 基于立体定位和RFID匿名残疾识别的辅助人行横道

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.223

D. F. Llorca, R. Quintero, I. Parra, R. Izquierdo, C. Fernández, M. Sotelo

{"title":"Assistive Pedestrian Crossings by Means of Stereo Localization and RFID Anonymous Disability Identification","authors":"D. F. Llorca, R. Quintero, I. Parra, R. Izquierdo, C. Fernández, M. Sotelo","doi":"10.1109/ITSC.2015.223","DOIUrl":"https://doi.org/10.1109/ITSC.2015.223","url":null,"abstract":"Assistive technology usually refers to systems used to increase, maintain, or improve functional capabilities of individuals with disabilities. This idea is here extended to transportation infrastructures, using pedestrian crossings as a specific case study. We define an Assistive Pedestrian Crossing as a pedestrian crossing able to interact with users with disabilities and provide an adaptive response to increase, maintain or improve their functional capabilities while crossing. Thus, the infrastructure should be able to locate the pedestrians with special needs as well as to identify their specific disability. In this paper, user location is obtained by means of a stereo-based pedestrian detection system. Disability identification is proposed by means of a RFID-based anonymous procedure from which pedestrians are only required to wear a portable and passive RFID tag. Global nearest neighbor is applied to solve data association between stereo targets and RFID measurements. The proposed assistive technology is validated in a real crosswalk, including different complex scenarios with multiple RFID tags.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130776597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Approaches for Facilities Layer Protocols for Platooning 面向队列的设施层协议方法

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.322

C. Bergenhem

引用次数: 20

ADS-B Authentication Compliant with Mode-S Extended Squitter Using PSK Modulation 采用PSK调制的兼容s模式扩展分频器的ADS-B认证

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.288

Omar A. Yeste Ojeda, R. Landry

{"title":"ADS-B Authentication Compliant with Mode-S Extended Squitter Using PSK Modulation","authors":"Omar A. Yeste Ojeda, R. Landry","doi":"10.1109/ITSC.2015.288","DOIUrl":"https://doi.org/10.1109/ITSC.2015.288","url":null,"abstract":"This work proposes to use Differential 16 Phase-Shift Keying (D16PSK) modulation for embedding a digital signature within Mode-S Extended Squitter (ES) Automatic Dependent Surveillance-Broadcast (ADS-B) messages. The purpose is to provide a security mechanism in order to protect systems against the injection of malicious Hazardously Misleading Information (HMI). The use of digital signatures for ADS-B has been previously analyzed in the literature. Our contribution and focus are devoted to the physical layer used to transmit such a signature. The proposed method generates ADS-B messages compliant with current standards, thus can be interpreted by current equipment. However, only a modified receiver shall be able to extract the embedded signature and authenticate the message. This work describes possible architectures for the ADS-B transmitting and receiving devices. An analysis of the expected maximum range and bit error rate for various PSK modulations is provided. In addition, the use of timestamps to protect against message replays is proposed and studied in the final part of the paper. In summary, this paper proposes a backward compatible way to secure the ADS-B system for the Mode-S ES data link, providing regulatory authorities with the means in case they opt for the use of digital signatures. The proposal is inspired from the idea behind the wireless security encryption method of Nagravision used in the Satellite TV broadcasting.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132892619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Stereo Augmented Detection of Lane Marking Boundaries 车道标记边界的立体增强检测

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.401

Michael H. W. Smart, Steven L. Waslander

引用次数: 5

Density Peaks Clustering Approach for Discovering Demand Hot Spots in City-scale Taxi Fleet Dataset 城市规模出租车车队数据集中需求热点发现的密度峰聚类方法

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.297

Dongchang Liu, Shih-Fen Cheng, Yiping Yang

{"title":"Density Peaks Clustering Approach for Discovering Demand Hot Spots in City-scale Taxi Fleet Dataset","authors":"Dongchang Liu, Shih-Fen Cheng, Yiping Yang","doi":"10.1109/ITSC.2015.297","DOIUrl":"https://doi.org/10.1109/ITSC.2015.297","url":null,"abstract":"In this paper, we introduce a variant of the density peaks clustering (DPC) approach for discovering demand hot spots from a low-frequency, low-quality taxi fleet operational dataset. From the literature, the DPC approach mainly uses density peaks as features to discover potential cluster centers, and this requires distances between all pairs of data points to be calculated. This implies that the DPC approach can only be applied to cases with relatively small numbers of data points. For the domain of urban taxi operations that we are interested in, we could have millions of demand points per day, and calculating all-pair distances between all demand points would be practically impossible, thus making DPC approach not applicable. To address this issue, we project all points to a density image and execute our variant of the DPC algorithm on the processed image. Experiment results show that our proposed DPC variant could get similar results as original DPC, yet with much shorter execution time and lower memory consumption. By running our DPC variant on a real-world dataset collected in Singapore, we show that there are indeed recurrent demand hot spots within the central business district that are not covered by the current taxi stand design. Our approach could be of use to both taxi fleet operator and traffic planners in guiding drivers and setting up taxi stands.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126204481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Effects of Quantity and Position of Guides on Pedestrian Evacuation 导流器数量和位置对行人疏散的影响

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.216

Xiaoxia Yang, Hai-rong Dong, Xiu-ming Yao, Xubin Sun

引用次数: 5

A Comparison Study on Vehicle Detection in Far Infrared and Regular Images 远红外与常规图像中车辆检测的比较研究

2015 IEEE 18th International Conference on Intelligent Transportation Systems Pub Date : 2015-09-15 DOI: 10.1109/ITSC.2015.260

David Savasturk, B. Fröhlich, Nicolai Schneider, M. Enzweiler, Uwe Franke

引用次数: 10