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A General Framework for Learning-Augmented Online Allocation

Authors Ilan Reuven Cohen , Debmalya Panigrahi

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  • Theory of computation → Scheduling algorithms
Keywords
  • Algorithms with predictions
  • Scheduling algorithms
  • Online algorithms

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Abstract

Online allocation is a broad class of problems where items arriving online have to be allocated to agents who have a fixed utility/cost for each assigned item so to maximize/minimize some objective. This framework captures a broad range of fundamental problems such as the Santa Claus problem (maximizing minimum utility), Nash welfare maximization (maximizing geometric mean of utilities), makespan minimization (minimizing maximum cost), minimization of 𝓁_p-norms, and so on. We focus on divisible items (i.e., fractional allocations) in this paper. Even for divisible items, these problems are characterized by strong super-constant lower bounds in the classical worst-case online model. 
In this paper, we study online allocations in the learning-augmented setting, i.e., where the algorithm has access to some additional (machine-learned) information about the problem instance. We introduce a general algorithmic framework for learning-augmented online allocation that produces nearly optimal solutions for this broad range of maximization and minimization objectives using only a single learned parameter for every agent. As corollaries of our general framework, we improve prior results of Lattanzi et al. (SODA 2020) and Li and Xian (ICML 2021) for learning-augmented makespan minimization, and obtain the first learning-augmented nearly-optimal algorithms for the other objectives such as Santa Claus, Nash welfare, 𝓁_p-minimization, etc. We also give tight bounds on the resilience of our algorithms to errors in the learned parameters, and study the learnability of these parameters.

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Ilan Reuven Cohen and Debmalya Panigrahi. A General Framework for Learning-Augmented Online Allocation. In 50th International Colloquium on Automata, Languages, and Programming (ICALP 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 261, pp. 43:1-43:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023) https://doi.org/10.4230/LIPIcs.ICALP.2023.43

Author Details

Ilan Reuven Cohen
  • Faculty of Engineering, Bar-Ilan University, Ramat Gan, Israel
Debmalya Panigrahi
  • Department of Computer Science, Duke University, Durham, NC, USA

Funding

  • Cohen, Ilan Reuven: This research was supported by the Israel Science Foundation grant No. 1737/21.
  • Panigrahi, Debmalya: This research was supported in part by NSF grants CCF-1750140 (CAREER) and CCF-1955703.

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