activity
20222026
most citedNon-existence of queues for system optimal departure patterns in tree networks

1 citations · 1 across the 5 of their papers we have counts for

collaborators

6 papers

math.OC2026

Route Based Map Matching via a Structured Codebook and Token Sequence Decoding

Takara Sakai, Hiroyuki Hasada

This study proposes an efficient and computationally light route based map matching method for GPS track data on urban expressway networks. The key idea is to exploit a symbolic st…

math.OC2026

Coarse Preference Reporting in the Bottleneck Model: Approximate Strategyproofness and Efficiency

Takara Sakai, Riki Kawase

A central operator schedules each vehicle's passage time through a bottleneck to achieve a dynamic system optimum (DSO). The assignment depends on each vehicle's preferred arrival…

math.OC2025

Queue Replacement Approach to Dynamic User Equilibrium Assignment with Route and Departure Time Choice

Takara Sakai, Takashi Akamatsu, Koki Satsukawa

This study develops a hybrid analytical and numerical approach for dynamic user equilibrium (DUE) assignment with simultaneous route and departure time choice (RDTC) for homogeneou…

math.OC2023

A Paradox of Telecommuting and Staggered Work Hours in the Bottleneck Model

Takara Sakai, Takashi Akamatsu, Koki Satsukawa

We study the long- and short-term effects of telecommuting (TLC), staggered work hours (SWH), and their combined scheme on peak-period congestion and location patterns. In order to…

math.OC2022

Queue replacement principle for corridor problems with heterogeneous commuters

Takara Sakai, Takashi Akamatsu, Koki Satsukawa

This study investigates the theoretical properties of a departure time choice problem considering commuters' heterogeneity with respect to the value of schedule delay in corridor n…

math.OC2022★ 1 cited

Non-existence of queues for system optimal departure patterns in tree networks

Takara Sakai, Koki Satsukawa, Takashi Akamatsu

This study proves the non-existence of queues for a dynamic system optimal (DSO) departure pattern in a directed rooted tree network with a single destination. First, considering q…