,
Zhe Feng
,
Anupam Gupta
,
Aranyak Mehta
,
David Wajc
,
Di Wang
Creative Commons Attribution 4.0 International license
We initiate the study of centralized algorithms for welfare-maximizing allocation of goods to buyers subject to average-value constraints. We show that this problem is NP-hard to approximate beyond a factor of e/(e-1), and provide a 4e/(e-1)-approximate offline algorithm. For the online setting, we show that no non-trivial approximations are achievable under adversarial arrivals. Under i.i.d. arrivals, we present a polytime online algorithm that provides a constant approximation of the optimal (computationally-unbounded) online algorithm. In contrast, we show that no constant approximation of the ex-post optimum is achievable by an online algorithm.
@InProceedings{bhawalkar_et_al:LIPIcs.APPROX/RANDOM.2024.13,
author = {Bhawalkar, Kshipra and Feng, Zhe and Gupta, Anupam and Mehta, Aranyak and Wajc, David and Wang, Di},
title = {{The Average-Value Allocation Problem}},
booktitle = {Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques (APPROX/RANDOM 2024)},
pages = {13:1--13:23},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-348-5},
ISSN = {1868-8969},
year = {2024},
volume = {317},
editor = {Kumar, Amit and Ron-Zewi, Noga},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.APPROX/RANDOM.2024.13},
URN = {urn:nbn:de:0030-drops-210062},
doi = {10.4230/LIPIcs.APPROX/RANDOM.2024.13},
annote = {Keywords: Resource allocation, return-on-spend constraint, approximation algorithm, online algorithm}
}