[2407.10316] Online Matroid Embeddings
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Computer Science > Data Structures and Algorithms

arXiv:2407.10316 (cs)
[Submitted on 14 Jul 2024]

Title:Online Matroid Embeddings

Authors:Andrés Cristi, Paul Dütting, Robert Kleinberg, Renato Paes Leme
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Abstract:We introduce the notion of an online matroid embedding, which is an algorithm for mapping an unknown matroid that is revealed in an online fashion to a larger-but-known matroid. The existence of such embedding enables a reduction from the version of the matroid secretary problem where the matroid is unknown to the version where the matroid is known in advance. We show that online matroid embeddings exist for binary (and hence graphic) and laminar matroids. We also show a negative result showing that no online matroid embedding exists for the class of all matroids. Finally, we define the notion of an approximate matroid embedding, generalizing the notion of {\alpha}-partition property, and provide an upper bound on the approximability of binary matroids by a partition matroid, matching the lower bound of Dughmi et al.
Comments: 25 pages, 4 figures
Subjects: Data Structures and Algorithms (cs.DS); Computer Science and Game Theory (cs.GT)
Cite as: arXiv:2407.10316 [cs.DS]
  (or arXiv:2407.10316v1 [cs.DS] for this version)
  https://doi.org/10.48550/arXiv.2407.10316

Submission history

From: Andrés Cristi [view email]
[v1] Sun, 14 Jul 2024 20:23:15 UTC (37 KB)
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