Search Results for author: Christos Tryfonopoulos

Found 4 papers, 2 papers with code

Atrapos: Real-time Evaluation of Metapath Query Workloads

1 code implementation11 Jan 2022 Serafeim Chatzopoulos, Thanasis Vergoulis, Dimitrios Skoutas, Theodore Dalamagas, Christos Tryfonopoulos, Panagiotis Karras

In this paper, we present ATRAPOS, a new approach for the real-time evaluation of metapath query workloads that leverages a combination of efficient sparse matrix multiplication and intermediate result caching.

Benchmarking and scaling of deep learning models for land cover image classification

1 code implementation18 Nov 2021 Ioannis Papoutsis, Nikolaos-Ioannis Bountos, Angelos Zavras, Dimitrios Michail, Christos Tryfonopoulos

In this work, we use the BigEarthNet Sentinel-2 dataset to benchmark for the first time different state-of-the-art DL models for the multi-label, multi-class LULC image classification problem, contributing with an exhaustive zoo of 60 trained models.

 Ranked #1 on Multi-Label Image Classification on BigEarthNet (official split metric)

Benchmarking Classification +2

A Crawler Architecture for Harvesting the Clear, Social, and Dark Web for IoT-Related Cyber-Threat Intelligence

no code implementations14 Sep 2021 Paris Koloveas, Thanasis Chantzios, Christos Tryfonopoulos, Spiros Skiadopoulos

The clear, social, and dark web have lately been identified as rich sources of valuable cyber-security information that -given the appropriate tools and methods-may be identified, crawled and subsequently leveraged to actionable cyber-threat intelligence.

Language Modelling

Social Media Monitoring for IoT Cyber-Threats

no code implementations9 Sep 2021 Sofia Alevizopoulou, Paris Koloveas, Christos Tryfonopoulos, Paraskevi Raftopoulou

The rapid development of IoT applications and their use in various fields of everyday life has resulted in an escalated number of different possible cyber-threats, and has consequently raised the need of securing IoT devices.

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