@inproceedings{484b5a7159a7482c9dd21d979090b1ac,
title = "Almost optimal distance oracles for planar graphs",
abstract = "We present new tradeoffs between space and query-time for exact distance oracles in directed weighted planar graphs. These tradeoffs are almost optimal in the sense that they are within polylogarithmic, subpolynomial or arbitrarily small polynomial factors from the na{\"i}ve linear space, constant query-time lower bound. These tradeoffs include: (i) an oracle with space O(n1+ϵ) and query-time {\~O}(1) for any constant ϵ > 0, (ii) an oracle with space {\~O}(n) and query-time O(nϵ) for any constant ϵ > 0, and (iii) an oracle with space n1+o(1) and query-time no(1).",
keywords = "Distance oracles, Planar graphs, Shortest paths, Voronoi diagrams",
author = "Panagiotis Charalampopoulos and Pawe{\l} Gawrychowski and Shay Mozes and Oren Weimann",
note = "Publisher Copyright: {\textcopyright} 2019 Association for Computing Machinery.; 51st Annual ACM SIGACT Symposium on Theory of Computing, STOC 2019 ; Conference date: 23-06-2019 Through 26-06-2019",
year = "2019",
month = jun,
day = "23",
doi = "https://doi.org/10.1145/3313276.3316316",
language = "American English",
series = "Proceedings of the Annual ACM Symposium on Theory of Computing",
publisher = "Association for Computing Machinery",
pages = "138--151",
editor = "Moses Charikar and Edith Cohen",
booktitle = "STOC 2019 - Proceedings of the 51st Annual ACM SIGACT Symposium on Theory of Computing",
address = "United States",
}