Niki Efthymiou

Postdoc, Athena Research and Innovation Centre

Joined

May 2025

Names

Niki Efthymiou (Preferred)

Emails

****@athenarc.gr (Confirmed)

****@hotmail.com (Confirmed)

****@central.ntua.gr (Confirmed)

Personal Links

Google Scholar

DBLP

ORCID

Career & Education History

Postdoc

Athena Research and Innovation Centre (athenarc.gr)

2023 – Present

Advisors, Relations & Conflicts

PhD Advisor

Petros Maragos

Present

Coauthor

Panagiotis Filntisis

Present

Coauthor

George Retsinas

Present

Coauthor

Gerasimos Potamianos

Present

Expertise

3D human shape and pose reconstruction

2023 – 2025

Digital Phenotyping

Health Monitoring

2019 – 2025

Multimodal Affective Computing

Human-Robot interaction

2018 – 2025

Publications

Augmenting Transformer Autoencoders with Phenotype Classification for Robust Detection of Psychotic Relapses
Niki Efthymiou, George Retsinas, Panagiotis Filntisis, Petros Maragos
- Greeks in AI 2025 Poster
- Readers: Everyone
Augmenting Transformer Autoencoders with Phenotype Classification for Robust Detection of Psychotic Relapses
Niki Efthymiou, George Retsinas, Panagiotis Paraskevas Filntisis, Petros Maragos
- ICASSP 2024
- Readers: Everyone
The 2nd E-Prevention Challenge: Psychotic and Non-Psychotic Relapse Detection Using Wearable-Based Digital Phenotyping
Panagiotis Paraskevas Filntisis, Niki Efthymiou, George Retsinas, Athanasia Zlatintsi, Christos Garoufis, Thomas Sounapoglou, Panayotis Tsanakas, Nikolaos Smyrnis, Petros Maragos
- ICASSP Workshops 2024
- Readers: Everyone
Mushroom Detection and Three Dimensional Pose Estimation from Multi-View Point Clouds
George Retsinas, Niki Efthymiou, Dafni Anagnostopoulou, Petros Maragos
- Sensors 2023
- Readers: Everyone
E-Prevention: The ICASSP-2023 Challenge on Person Identification and Relapse Detection from Continuous Recordings of Biosignals
Athanasia Zlatintsi, Panagiotis Paraskevas Filntisis, Niki Efthymiou, Christos Garoufis, George Retsinas, Thomas Sounapoglou, Ilias Maglogiannis, Panayiotis Tsanakas, Nikolaos Smyrnis, Petros Maragos
- ICASSP 2023
- Readers: Everyone
From Digital Phenotype Identification To Detection Of Psychotic Relapses
Niki Efthymiou, George Retsinas, Panagiotis Paraskevas Filntisis, Christos Garoufis, Athanasia Zlatintsi, Emmanouil Kalisperakis, Vasiliki Garyfalli, Thomas Karantinos, Marina Lazaridi, Nikolaos Smyrnis, Petros Maragos
- ICHI 2023
- Readers: Everyone
Relapse Prediction from Long-Term Wearable Data Using Self-Supervised Learning and Survival Analysis
E. Fekas, Athanasia Zlatintsi, Panagiotis Paraskevas Filntisis, Christos Garoufis, Niki Efthymiou, Petros Maragos
- ICASSP 2023
- Readers: Everyone
A Realistic Synthetic Mushroom Scenes Dataset
Dafni Anagnostopoulou, George Retsinas, Niki Efthymiou, Panayiotis Paraskevas Filntisis, Petros Maragos
- CVPR Workshops 2023
- Readers: Everyone
Mushroom Segmentation and 3D Pose Estimation from Point Clouds using Fully Convolutional Geometric Features and Implicit Pose Encoding
George Retsinas, Niki Efthymiou, Petros Maragos
- CVPR Workshops 2023
- Readers: Everyone
E-Prevention: Advanced Support System for Monitoring and Relapse Prevention in Patients with Psychotic Disorders Analyzing Long-Term Multimodal Data from Wearables and Video Captures
Athanasia Zlatintsi, Panagiotis Paraskevas Filntisis, Christos Garoufis, Niki Efthymiou, Petros Maragos, Andreas Menychtas, Ilias Maglogiannis, Panayiotis Tsanakas, Thomas Sounapoglou, Emmanouil Kalisperakis, Thomas Karantinos, Marina Lazaridi, Vasiliki Garyfalli, Asimakis Mantas, Leonidas Mantonakis, Nikolaos Smyrnis
- Sensors 2022
- Readers: Everyone

View all 31 publications

Co-Authors

View all 34 co-authors