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Giannis Fikioris
Ph.D.,  Cornell University
gfikioris [at] cs [dot] cornell [dot] edu

I am a fifth-year PhD student in the theory group at Cornell University and very fortunate to be advised by Éva Tardos. My PhD has been supported by the NDSEG fellowship, the Onassis Scholarship, and the Google PhD fellowship. I am broadly working on Algorithmic Game Theory and Learning Theory problems. My most recent work has been on Mechanism Design and/or Online Learning with global constraints.

During Fall 2023, I was a Student Researcher in the Market Algorithms team at Google Research. This internship led to No-Regret Algorithms in non-Truthful Auctions with Budget and ROI Constraints, published with Mingfei Zhao and Gagan Aggarwal.

Before coming to Cornell, I received my BSE from the department of Electrical and Computer Engineering at the National Technical University of Athens. I completed my undergraduate thesis with Dimitris Fotakis, titled Perturbation Stability for Mechanism Design.

From July 2019 to August 2020, I was working at NCSR “Demokritos” in the Complex Event Recognition Group, advised by Alexander Artikis.

How to pronounce my name.

Interests

  • Theoretical Computer Science
  • Algorithmic Game Theory
  • Learning Theory

Academia

Cornell University
2020 - present
Ph.D. in Computer Science
National Technical University of Athens
2014 - 2019
B.Sc. in Electrical and Computer Engineering

News

Publications

Work Experience

  • Student Researcher at the Market Algorithms, Google Research Sep. 2023 - Nov. 2023
    I worked with Mingfei Zhao and Gagan Aggarwal on problems related to Online Learning and Mechanism Design.
  • Research Associate at the Complex Event Recognition Group, NCSR “Demokritos” Jul. 2019 - Aug. 2020
    I worked on an algorithm that compresses the route of a ship, to make a simpler trajectory with less points. This allows a complex event recognition engine (RTEC) to identify various events more quickly and accurate.

Awards and Honors

  • Google Fellowship, two year financial support Cornell, 2024
  • Onassis Scholarship, three year financial support Cornell, 2022
  • NDSEG Fellowship, three year full financial support Cornell, 2022
  • NSF GRFP Fellowship, declined in favor of NDSEG Cornell, 2022
  • Gerondelis Scholarship, one time financial support Cornell, 2021
  • Papakyriakopoulos Award, for highest grade in Mathematic-related courses in 1st and 2nd semesters NTUA, 2015
  • Kritikos Grant, for highest grade in Mathematic-related courses in 1st year NTUA, 2015

Teaching Experience