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SUMMARY:Dynamic Decisions and Temporal Frictions in On-Demand Mobility
DTSTART:20260622T103000
DTEND:20260622T113000
DTSTAMP:20260523T193646Z
UID:734e9d8d0d19a2ac4a1a084e95e503ec3e295cd1f35513df4249f832
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Andrés Fielbaum\nABSTRACT\nApp-based\, on-demand transport
  systems have transformed urban mobility by enabling real-time coordinatio
 n between vehicles and users. Yet behind this flexibility lies a fundament
 al tension: operational decisions that appear beneficial in the present ca
 n deteriorate the future state of the system. This talk explores these tem
 poral frictions in assigned on-demand systems—where passengers and vehic
 les are matched before meeting—and how they shape the performance and re
 liability of shared mobility services.\nFirst\, we show how assignment dec
 isions evolve through what we term the Increasing Gap Dynamics\, a negativ
 e feedback cycle through which vehicles progressively concentrate in space
 \, reducing system efficiency over time. We then examine how a tension bet
 ween efficiency and reliability emerges: while highly dynamic operations c
 an improve short-term efficiency and flexibility\, they may also increase 
 unreliability by exposing passengers to future\, uncertain requests. We di
 scuss how this tension manifests both in routing decisions and in the sele
 ction of pickup and dropoff locations\, and show how carefully designed an
 ticipatory techniques can help reconcile these competing objectives.\n\n 
 \nSHORT BIO\nDr Andrés Fielbaum is a Senior Lecturer in Transport Enginee
 ring at the University of Sydney and a DECRA Fellow of the Australian Rese
 arch Council. His work lies at the intersection of transport systems and a
 pplied mathematics\, with a focus on public transport\, on-demand mobility
 \, and developing analytical models to inform system design and operations
 . He completed his PhD in Systems Engineering at Universidad de Chile in 2
 019 and held a postdoctoral appointment at TU Delft between 2019-2023.\n\n
 Dr Fielbaum has authored over 35 peer-reviewed journal articles in leading
  outlets and serves as an Associate Editor for Transportation Research Par
 t B: Methodological\,  and the Journal of Intelligent Transportation Syst
 ems.\n\n 
LOCATION:GC B1 10 https://plan.epfl.ch/?room==GC%20B1%2010
STATUS:CONFIRMED
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