Search Results for author: Stefanos Antaris

Found 9 papers, 5 papers with code

Meta-Reinforcement Learning via Buffering Graph Signatures for Live Video Streaming Events

1 code implementation3 Oct 2021 Stefanos Antaris, Dimitrios Rafailidis, Sarunas Girdzijauskas

By considering a new event as a task, we design an actor-critic learning scheme to compute the optimal policy on estimating the viewers' high-bandwidth connections.

Meta-Learning Meta Reinforcement Learning +2

Sequence Adaptation via Reinforcement Learning in Recommender Systems

1 code implementation31 Jul 2021 Stefanos Antaris, Dimitrios Rafailidis

This might limit the recommendation accuracy, as in practice users follow different trends on the sequential recommendations.

Recommendation Systems reinforcement-learning +1

A Deep Graph Reinforcement Learning Model for Improving User Experience in Live Video Streaming

no code implementations28 Jul 2021 Stefanos Antaris, Dimitrios Rafailidis, Sarunas Girdzijauskas

We first formulate the user experience prediction problem as a classification task, accounting for the fact that most of the viewers at the beginning of an event have poor quality of experience due to low-bandwidth connections and limited interactions with the tracker.

Reinforcement Learning (RL)

Multi-Task Learning for User Engagement and Adoption in Live Video Streaming Events

no code implementations18 Jun 2021 Stefanos Antaris, Dimitrios Rafailidis, Romina Arriaza

Nowadays, live video streaming events have become a mainstay in viewer's communication in large international enterprises.

Multi-Task Learning

VStreamDRLS: Dynamic Graph Representation Learning with Self-Attention for Enterprise Distributed Video Streaming Solutions

1 code implementation11 Nov 2020 Stefanos Antaris, Dimitrios Rafailidis

We propose VStreamDRLS, a graph neural network architecture with a self-attention mechanism to capture the evolution of the graph structure of live video streaming events.

Graph Representation Learning Link Prediction

Distill2Vec: Dynamic Graph Representation Learning with Knowledge Distillation

1 code implementation11 Nov 2020 Stefanos Antaris, Dimitrios Rafailidis

In this study we propose Distill2Vec, a knowledge distillation strategy to train a compact model with a low number of trainable parameters, so as to reduce the latency of online inference and maintain the model accuracy high.

Graph Representation Learning Knowledge Distillation +1

Adaptive Neural Architectures for Recommender Systems

no code implementations11 Nov 2020 Dimitrios Rafailidis, Stefanos Antaris

The main drawback of deep reinforcement strategies is that are based on predefined and fixed neural architectures.

Recommendation Systems reinforcement-learning +1

On Estimating the Training Cost of Conversational Recommendation Systems

no code implementations10 Nov 2020 Stefanos Antaris, Dimitrios Rafailidis, Mohammad Aliannejadi

Conversational recommendation systems have recently gain a lot of attention, as users can continuously interact with the system over multiple conversational turns.

Knowledge Distillation Recommendation Systems

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