Online weighted matching with a sample

H Kaplan, D Naori, D Raz - Proceedings of the 2022 Annual ACM-SIAM …, 2022‏ - SIAM
We study the greedy-based online algorithm for edge-weighted matching with (one-sided)
vertex arrivals in bipartite graphs, and edge arrivals in general graphs. This algorithm was …

Ordinal approximation for social choice, matching, and facility location problems given candidate positions

E Anshelevich, W Zhu - ACM Transactions on Economics and …, 2021‏ - dl.acm.org
In this work, we consider general facility location and social choice problems, in which sets
of agents A and facilities F are located in a metric space, and our goal is to assign agents to …

Strong algorithms for the ordinal matroid secretary problem

JA Soto, A Turkieltaub… - Mathematics of Operations …, 2021‏ - pubsonline.informs.org
In the ordinal matroid secretary problem (MSP), candidates do not reveal numerical weights,
but the decision maker can still discern if a candidate is better than another. An algorithm α …

General graphs are easier than bipartite graphs: Tight bounds for secretary matching

T Ezra, M Feldman, N Gravin, ZG Tang - … of the 23rd ACM Conference on …, 2022‏ - dl.acm.org
Online algorithms for secretary matching in bipartite weighted graphs have been studied
extensively in recent years. We generalize this study to secretary matching in general …

Matroid secretary is equivalent to contention resolution

S Dughmi - arxiv preprint arxiv:2103.04205, 2021‏ - arxiv.org
We show that the matroid secretary problem is equivalent to correlated contention resolution
in the online random-order model. Specifically, the matroid secretary conjecture is true if and …

[HTML][HTML] New results for the k-secretary problem

S Albers, L Ladewig - Theoretical Computer Science, 2021‏ - Elsevier
Suppose that n items arrive online in random order and the goal is to select k of them such
that the expected sum of the selected items is maximized. The decision for any item is …

Online dependent task assignment in preference aware spatial crowdsourcing

J Yao, L Yang, X Xu - IEEE Transactions on Services …, 2022‏ - ieeexplore.ieee.org
Spatial crowdsourcing platforms have become increasingly popular in people's daily life. A
fundamental problem in spatial crowdsourcing is task assignment, which assigns spatial …

Prophet inequalities via the expected competitive ratio

T Ezra, S Leonardi, R Reiffenhäuser, M Russo… - … Conference on Web …, 2023‏ - Springer
We consider prophet inequalities under downward-closed constraints. In this problem, a
decision-maker makes immediate and irrevocable choices on arriving elements, subject to …

The secretary recommendation problem

N Hahn, M Hoefer, R Smorodinsky - Games and Economic Behavior, 2022‏ - Elsevier
We revisit the basic variant of the classical secretary problem. We propose a new approach
in which we separate between an agent (the sender) that evaluates the secretary …

Tight Bounds for Secretary Matching in General Graphs

T Ezra, M Feldman, N Gravin… - … of Operations Research, 2024‏ - pubsonline.informs.org
Online algorithms for secretary matching in bipartite weighted graphs have been studied
extensively in recent years. We generalize this study to secretary matching in general …