activity
20162023
most citedTension and constraints on modified gravity parametrizations of from growth rate and Planck data

228 citations · 318 across the 9 of their papers we have counts for

collaborators

9 papers

math.OC2023

Probably approximately correct stability of allocations in uncertain coalitional games with private sampling

George Pantazis, Filiberto Fele, Filippo Fabiani +2

We study coalitional games with exogenous uncertainty in the coalition value, in which each agent is allowed to have private samples of the uncertainty. As a consequence, the agent…

math.OC2023

Distributionally robust stability of payoff allocations in stochastic coalitional games

George Pantazis, Barbara Franci, Sergio Grammatico +1

We consider multi-agent coalitional games with uncertainty in the coalitional values. We provide a novel methodology to study the stability of the grand coalition in the case where…

math.OC2022★ 3 cited

Probabilistically robust stabilizing allocations in uncertain coalitional games

George Pantazis, Filippo Fabiani, Filiberto Fele +1

In this paper we consider multi-agent coalitional games with uncertain value functions for which we establish distribution-free guarantees on the probability of allocation stabilit…

cs.CV2020★ 3 cited

SalSum: Saliency-based Video Summarization using Generative Adversarial Networks

George Pantazis, George Dimas, Dimitris K. Iakovidis

The huge amount of video data produced daily by camera-based systems, such as surveilance, medical and telecommunication systems, emerges the need for effective video summarization…

math.OC2020

On the probabilistic feasibility of solutions in multi-agent optimization problems under uncertainty

George Pantazis, Filiberto Fele, Kostas Margellos

We investigate the probabilistic feasibility of randomized solutions to two distinct classes of uncertain multi-agent optimization programs. We first assume that only the constrain…

math.OC2020

A posteriori probabilistic feasibility guarantees for Nash equilibria in uncertain multi-agent games

George Pantazis, Filiberto Fele, Kostas Margellos

In this paper a distribution-free methodology is presented for providing robustness guarantees for Nash equilibria (NE) of multi-agent games. Leveraging recent a posteriori develop…

astro-ph.CO2017★ 228 cited

Tension and constraints on modified gravity parametrizations of from growth rate and Planck data

Savvas Nesseris, George Pantazis, Leandros Perivolaropoulos

We construct an updated and extended compilation of growth rate data consisting of 34 points and including corrections for model dependence. In order to maximize the independence o…

physics.class-ph2016★ 2 cited

A general realistic treatment of the disk paradox

George Pantazis, Leandros Perivolaropoulos

Mechanical angular momentum is not conserved in systems involving electromagnetic fields with non-zero electromagnetic field angular momentum. Conservation is restored only if the…

astro-ph.CO2016★ 82 cited

A Comparison of Thawing and Freezing Dark Energy Parametrizations

G. Pantazis, S. Nesseris, L. Perivolaropoulos

Dark energy equation of state parametrizations with two parameters and given monotonicity are generically either convex or concave functions. This makes them suitable for fi…