CV

PhD

Cornell University

Advised by Éva Tardos

Computer Science

Diploma (equivalent to M.Sc.)

National Technical University of Athens

Advised by Dimitris Fotakis

Electrical and Computer Engineering

Student Researcher

Google Research, Market Algorithms

Working with Yuan Deng, Balu Sivan, and Renato Paes Leme.

Student Researcher

Google Research, Market Algorithms

Working with Mingfei Zhao and Gagan Aggarwal.

• No-Regret Algorithms in non-Truthful Auctions with Budget and ROI Constraints

Research Associate

NCSR "Demokritos", Complex Event Recognition Group

Working with Alexander Artikis.

• Optimizing Vessel Trajectory Compression
• Fine-Tuned Compressed Representations of Vessel Trajectories
• Optimizing vessel trajectory compression for maritime situational awareness

Google PhD Fellowship

Cornell University

Covers full tuition and fees, plus a stipend, for two years.

Onassis Scholarship

Cornell University

Additional financial support over two years.

NDSEG Fellowship

Cornell University

Covers full tuition and fees, plus a stipend, for three years.

NSF GRFP Fellowship

Cornell University

Covers partial tuition and fees, plus a stipend, for three years (declined in favor of NDSEG).

Gerondelis Scholarship

Cornell University

One time financial support.

Papakyriakopoulos Award

National Technical University of Athens

For highest grade in Mathematics-related courses in the 1st and 2nd semesters.

Kritikos Grant

National Technical University of Athens

For highest grade in Mathematics-related courses during the 1st academic year.

Robust Equilibria in Shared Resource Allocation via Strengthening Border's Theorem

SODA 2026

David X. Lin, Siddhartha Banerjee, Giannis Fikioris, Éva Tardos

Online Resource Sharing: Better Robust Guarantees via Randomized Strategies

IJCAI 2025

Chido Onyeze, Siddhartha Banerjee, Giannis Fikioris, Éva Tardos

Learning in Budgeted Auctions with Spacing Objectives

EC 2025

Giannis Fikioris, Robert Kleinberg, Yoav Kolumbus, Raunak Kumar, Yishay Mansour, Éva Tardos

Beyond Worst-Case Online Allocation via Dynamic Max-min Fairness

EC 2025

Giannis Fikioris, Siddhartha Banerjee, Éva Tardos

No-Regret Algorithms in non-Truthful Auctions with Budget and ROI Constraints

WWW 2025

Gagan Aggarwal, Giannis Fikioris, Mingfei Zhao

Allocating Public Goods via Dynamic Max-Min Fairness: Long-Run Behavior and Competitive Equilibria

SIGMETRICS 2025

Chido Onyeze, Siddhartha Banerjee, Giannis Fikioris, Éva Tardos

Incentives in Dominant Resource Fair Allocation Under Dynamic Demands

SAGT 2024

Giannis Fikioris, Rachit Agarwal, Éva Tardos

Liquid Welfare Guarantees for No-Regret Learning in Sequential Budgeted Auctions

Mathematics of Operations Research & EC 2023

Giannis Fikioris, Éva Tardos

Robust Pseudo-Markets for Reusable Public Resources

EC 2023

Siddhartha Banerjee, Giannis Fikioris, Éva Tardos

Approximately Stationary Bandits with Knapsacks

COLT 2023

Giannis Fikioris, Éva Tardos

Karma: Resource Allocation for Dynamic Demands

OSDI 2023

Midhul Vuppalapati, Giannis Fikioris, Rachit Agarwal, Asaf Cidon, Anurag Khandelwal, Éva Tardos

An extension to "A subsemigroup of the rook monoid"

Semigroup Forum

George Fikioris, Giannis Fikioris

Optimizing vessel trajectory compression for maritime situational awareness

GeoInformatica

Giannis Fikioris, Kostas Patroumpas, Alexander Artikis, Manolis Pitsikalis, Georgios Paliouras

Mechanism Design for Perturbation Stable Combinatorial Auctions

Theory of Computing Systems & SAGT 2020

Giannis Fikioris, Dimitris Fotakis

A subsemigroup of the rook monoid

Semigroup Forum

George Fikioris, Giannis Fikioris

Optimizing Vessel Trajectory Compression

MDM 2020

Giannis Fikioris, Kostas Patroumpas, Alexander Artikis

Fine-Tuned Compressed Representations of Vessel Trajectories

CIKM 2020

Giannis Fikioris, Kostas Patroumpas, Alexander Artikis, Georgios Paliouras, Manolis Pitsikalis