Search Results for author: Anastasios Giovanidis

Found 4 papers, 1 papers with code

Improving Graph Neural Networks at Scale: Combining Approximate PageRank and CoreRank

1 code implementation8 Nov 2022 Ariel R. Ramos Vela, Johannes F. Lutzeyer, Anastasios Giovanidis, Michalis Vazirgiannis

Graph Neural Networks (GNNs) have achieved great successes in many learning tasks performed on graph structures.

SlateFree: a Model-Free Decomposition for Reinforcement Learning with Slate Actions

no code implementations5 Sep 2022 Anastasios Giovanidis

We consider the problem of sequential recommendations, where at each step an agent proposes some slate of $N$ distinct items to a user from a much larger catalog of size $K>>N$.

Q-Learning reinforcement-learning +1

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

Sequential Resource Access: Theory and Algorithm

no code implementations7 Dec 2020 Lin Chen, Anastasios Giovanidis, Wei Wang, Lin Shan

We formulate and analyze a generic sequential resource access problem arising in a variety of engineering fields, where a user disposes a number of heterogeneous computing, communication, or storage resources, each characterized by the probability of successfully executing the user's task and the related access delay and cost, and seeks an optimal access strategy to maximize her utility within a given time horizon, defined as the expected reward minus the access cost.

Networking and Internet Architecture

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