Based on the reliability budget and percentile travel time(PTT) concept, a new travel time index named combined mean travel time(CMTT) under stochastic traffic network was proposed. CMTT here was defined as the convex...Based on the reliability budget and percentile travel time(PTT) concept, a new travel time index named combined mean travel time(CMTT) under stochastic traffic network was proposed. CMTT here was defined as the convex combination of the conditional expectations of PTT-below and PTT-excess travel times. The former was designed as a risk-optimistic travel time index, and the latter was a risk-pessimistic one. Hence, CMTT was able to describe various routing risk-attitudes. The central idea of CMTT was comprehensively illustrated and the difference among the existing travel time indices was analyzed. The Wardropian combined mean traffic equilibrium(CMTE) model was formulated as a variational inequality and solved via an alternating direction algorithm nesting extra-gradient projection process. Some mathematical properties of CMTT and CMTE model were rigorously proved. Finally, a numerical example was performed to characterize the CMTE network. It is founded that that risk-pessimism is of more benefit to a modest(or low) congestion and risk network, however, it changes to be risk-optimism for a high congestion and risk network.展开更多
SPIE-Vol.3589 00213501999年 SPIE 会议录,卷3589:制造过程控制与传感器(2)=1999 proceedings of SPIE,Vol.3589:processcontrol and sensors for manufacturingⅡ[会,英]/SPIE-the International Society for Optical Engineering.—1...SPIE-Vol.3589 00213501999年 SPIE 会议录,卷3589:制造过程控制与传感器(2)=1999 proceedings of SPIE,Vol.3589:processcontrol and sensors for manufacturingⅡ[会,英]/SPIE-the International Society for Optical Engineering.—1999.—180P.(PC)本会议录收集了于1999年3月3～4日在美国加州新海岸召开的制造过程控制与传感器专题讨论会上发表的20篇论文。内容主要涉及各种传感器与过程监测。展开更多
基金Project(2012CB725403-5)supported by National Basic Research Program of ChinaProject(71131001-2)supported by National Natural Science Foundation of China+1 种基金Projects(2012JBZ005)supported by Fundamental Research Funds for the Central Universities,ChinaProject(201170)supported by the Foundation for National Excellent Doctoral Dissertation of China
文摘Based on the reliability budget and percentile travel time(PTT) concept, a new travel time index named combined mean travel time(CMTT) under stochastic traffic network was proposed. CMTT here was defined as the convex combination of the conditional expectations of PTT-below and PTT-excess travel times. The former was designed as a risk-optimistic travel time index, and the latter was a risk-pessimistic one. Hence, CMTT was able to describe various routing risk-attitudes. The central idea of CMTT was comprehensively illustrated and the difference among the existing travel time indices was analyzed. The Wardropian combined mean traffic equilibrium(CMTE) model was formulated as a variational inequality and solved via an alternating direction algorithm nesting extra-gradient projection process. Some mathematical properties of CMTT and CMTE model were rigorously proved. Finally, a numerical example was performed to characterize the CMTE network. It is founded that that risk-pessimism is of more benefit to a modest(or low) congestion and risk network, however, it changes to be risk-optimism for a high congestion and risk network.
文摘SPIE-Vol.3589 00213501999年 SPIE 会议录,卷3589:制造过程控制与传感器(2)=1999 proceedings of SPIE,Vol.3589:processcontrol and sensors for manufacturingⅡ[会,英]/SPIE-the International Society for Optical Engineering.—1999.—180P.(PC)本会议录收集了于1999年3月3～4日在美国加州新海岸召开的制造过程控制与传感器专题讨论会上发表的20篇论文。内容主要涉及各种传感器与过程监测。
