Primal-Dual Online Algorithms for the Parking Permit Problem
数据结构与算法
2026-07-09 v1
摘要
The Parking Permit Problem (PPP), first studied by Meyerson, is a classic online problem generalizing the ski rental problem. We re-examine the PPP using the primal-dual scheme, obtaining simple algorithms with superior performance guarantees. Unlike previous work, which relied on reductions that degraded competitive ratios, we work with the problem's structure directly. We also provide near-matching lower bounds. Using the primal-dual framework, we find the PPP's deterministic competitive ratio exactly, and the randomized competitive ratio within an additive constant.
引用
@article{arxiv.2607.08262,
title = {Primal-Dual Online Algorithms for the Parking Permit Problem},
author = {Christian Coester and Alex Turoczy},
journal= {arXiv preprint arXiv:2607.08262},
year = {2026}
}