About me

I am a Postdoctoral researcher under the NETWORKS program in the Department of Mathematics and Computer Science at the Eindhoven University of Technology (TU/e), and in the Korteweg-de Vries Institute for Mathematics at the University of Amsterdam (UvA). I am working in the research groups of Sem Borst and Michel Mandjes.

Before joining TU/e and UvA, I completed my PhD in Electrical Engineering in September 2019 in the Laboratory for Information & Decision Systems at the Massachusetts Institute of Technology, where I was very fortunate to be supervised by David Gamarnik and John Tsitsiklis.

I am generally interested in the modeling, analysis, and control of large-scale stochastic decision systems, inspired by applications in computer networks, and other service and learning systems. I am particularly interested in exploring the fundamental tradeoffs between performance and efficiency that arise in these systems, with a special emphasis on the role that information plays in these tradeoffs.

Contact: m.zubeldia.suarez@tue.nl

Publications

Journal papers

Learning traffic correlations in multi-class queueing systems by sampling queue lengths, with routing applications.
M. Zubeldia and M. Mandjes - Submitted.

Stability, memory, and messaging tradeoffs in heterogeneous service systems.
D. Gamarnik, J.N. Tsitsiklis, and M. Zubeldia - Under revision at Mathematics of Operations Research.

Large deviations for acyclic networks of queues with correlated Gaussian inputs.
M. Zubeldia and M. Mandjes - To appear in Queueing Systems: Theory and Applications (2021).

Zero-Wait Load Balancing with Sparse Messaging.
M. van der Boor, M. Zubeldia, and S. Borst - Operations Research Letters 48 (3), 368-375 (2020).

Delay-optimal policies in partial fork-join systems with redundancy and random slowdowns.
M. Zubeldia - ACM Measurement and Analysis of Computing Systems 4 (2), Article No. 2 (2020).

A lower bound on the queueing delay in resource constrained load balancing.
D. Gamarnik, J.N. Tsitsiklis, and M. Zubeldia - Annals of Applied Probability 30 (2), 870-901 (2020).
Finalist, 2019 INFORMS APS Best Student Paper Award

Collaboratively Learning the Best Option on Graphs, Using Bounded Local Memory .
L. Su, M. Zubeldia, and N. Lynch - ACM Measurement and Analysis of Computing Systems 3 (1), Article No. 11 (2019).

Delay Scaling in Many-Sources Wireless Networks without Queue State Information.
S. Borst and M. Zubeldia - ACM Measurement and Analysis of Computing Systems 2 (2), Article No. 34 (2018).

Delay, memory, and messaging tradeoffs in distributed service systems.
D. Gamarnik, J.N. Tsitsiklis, and M. Zubeldia - Stochastic Systems 1 (7), 1-54 (2018).
Finalist, 2016 INFORMS George E. Nicholson Student Paper Competition

Reciprocity and efficiency in peer exchange of wireless nodes through convex optimization
F. Paganini, M. Zubeldia, and A. Ferragut - Transactions on Network Science and Engineering 3 (4), 257-270 (2016)

Neighbor selection for proportional fairness in P2P networks.
M. Zubeldia, A. Ferragut, and F. Paganini - Computer Networks 83 (4), 249-264 (2015).

Overcoming performance pitfalls in rate-diverse high speed WLANs.
M. Zubeldia, A. Ferragut, and F. Paganini - Computer Networks 57 (17), 3673-3685 (2013).

Conference papers

Delay-optimal policies in partial fork-join systems with redundancy and random slowdowns.
M. Zubeldia - SIGMETRICS 2020 (extended abstracts).

Collaboratively Learning the Best Option on Graphs, Using Bounded Local Memory .
L. Su, M. Zubeldia, and N. Lynch - SIGMETRICS 2019 (extended abstracts).

Delay Scaling in Many-Sources Wireless Networks without Queue State Information.
S. Borst and M. Zubeldia - SIGMETRICS 2018 (extended abstracts).

Delay, memory and messaging tradeoffs in distributed service systems
D. Gamarnik, J. N. Tsitsiklis and M. Zubeldia - SIGMETRICS 2016.

Trading off efficiency and reciprocity in wireless peer-to-peer file sharing.
F. Paganini, M. Zubeldia and A. Ferragut - WiOPT 2015

Dynamics of heterogeneous peer-to-peer networks.
F. Paganini, A. Ferragut and M. Zubeldia - CDC 2013

Proportional fairness in heterogeneous peer-to-peer networks through reciprocity and Gibbs sampling.
M. Zubeldia, A. Ferragut and F. Paganini - Allerton 2013.

Averting speed inefficiency in rate-diverse WiFi networks through queueing and aggregation.
M. Zubeldia, A. Ferragut and F. Paganini - GLOBECOM 2012.


Theses

Delay, stability, and resource tradeoffs in large distributed service systems.
Ph.D. Thesis, Massachusetts Institute of Technology, August 2019
supervised by Prof. David Gamarnik and Prof. John Tsitsiklis.

From resource allocation to neighbor selection in peer-to-peer networks.
M.Sc. Thesis, Universidad ORT Uruguay, August 2014
supervised by Prof. Fernando Paganini and Prof. Andres Ferragut.

Efficiency and fairness in WiFi networks (in Spanish).
B.S. Thesis, Universidad ORT Uruguay, May 2012
supervised by Prof. Fernando Paganini and Prof. Andres Ferragut.

Awards and recognitions

Finalist, 2019 INFORMS APS Best Student Paper Award for the paper "A lower bound on the queueing delay in resource constrained load balancing".
Outstanding Poster Award , Stochastic Networks 2018.
Finalist, 2016 INFORMS George E. Nicholson Student Paper Competition for the paper "Delay, memory, and messaging tradeoffs in distributed service systems".
Irwin Mark Jacobs Presidential Fellowship, Massachusetts Institute of Technology (2014-2015).
National graduate studies scholarship, ANII-Uruguay (2013-2014).
Award for exceptional academic performance, Universidad ORT Uruguay (2012).
Initiation to research scholarship, ANII-Uruguay (2011-2012).
Full undergraduate scholarship for academic excellence, Universidad ORT Uruguay (2007-2012).