Search Results for author: Thrasyvoulos Spyropoulos

Found 4 papers, 1 papers with code

FedDec: Peer-to-peer Aided Federated Learning

no code implementations11 Jun 2023 Marina Costantini, Giovanni Neglia, Thrasyvoulos Spyropoulos

We analyze the convergence of FedDec under the assumptions of non-iid data distribution, partial device participation, and smooth and strongly convex costs, and show that inter-agent communication alleviates the negative impact of infrequent communication rounds with the server by reducing the dependence on the number of local updates $H$ from $O(H^2)$ to $O(H)$.

Federated Learning

Pick your Neighbor: Local Gauss-Southwell Rule for Fast Asynchronous Decentralized Optimization

1 code implementation15 Jul 2022 Marina Costantini, Nikolaos Liakopoulos, Panayotis Mertikopoulos, Thrasyvoulos Spyropoulos

In decentralized optimization environments, each agent $i$ in a network of $n$ nodes has its own private function $f_i$, and nodes communicate with their neighbors to cooperatively minimize the aggregate objective $\sum_{i=1}^n f_i$.

SOBA: Session optimal MDP-based network friendly recommendations

no code implementations7 Dec 2020 Theodoros Giannakas, Anastasios Giovanidis, Thrasyvoulos Spyropoulos

Caching content over CDNs or at the network edge has been solidified as a means to improve network cost and offer better streaming experience to users.

Networking and Internet Architecture Performance

Problem-Adapted Artificial Intelligence for Online Network Optimization

no code implementations30 May 2018 Spyridon Vassilaras, Luigi Vigneri, Nikolaos Liakopoulos, Georgios S. Paschos, Apostolos Destounis, Thrasyvoulos Spyropoulos, Merouane Debbah

To this end, we propose the framework of Online Network Optimization (ONO), which seeks to maintain both agile and efficient control over time, using an arsenal of data-driven, online learning, and AI-based techniques.

Management

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