Search Results for author: Christos Anagnostopoulos

Found 13 papers, 4 papers with code

FedDIP: Federated Learning with Extreme Dynamic Pruning and Incremental Regularization

1 code implementation13 Sep 2023 Qianyu Long, Christos Anagnostopoulos, Shameem Puthiya Parambath, Daning Bi

Federated Learning (FL) has been successfully adopted for distributed training and inference of large-scale Deep Neural Networks (DNNs).

Federated Learning

Real time enhancement of operator's ergonomics in physical human - robot collaboration scenarios using a multi-stereo camera system

no code implementations11 Apr 2023 Gerasimos Arvanitis, Nikos Piperigkos, Christos Anagnostopoulos, Aris S. Lalos, Konstantinos Moustakas

In collaborative tasks where humans work alongside machines, the robot's movements and behaviour can have a significant impact on the operator's safety, health, and comfort.

Optimizing Vision Transformers for Medical Image Segmentation

1 code implementation14 Oct 2022 Qianying Liu, Chaitanya Kaul, Jun Wang, Christos Anagnostopoulos, Roderick Murray-Smith, Fani Deligianni

For medical image semantic segmentation (MISS), Vision Transformers have emerged as strong alternatives to convolutional neural networks thanks to their inherent ability to capture long-range correlations.

Domain Adaptation Image Segmentation +2

Improving Sequential Query Recommendation with Immediate User Feedback

1 code implementation12 May 2022 Shameem A Puthiya Parambath, Christos Anagnostopoulos, Roderick Murray-Smith

We propose to augment the transformer-based causal language models for query recommendations to adapt to the immediate user feedback using multi-armed bandit (MAB) framework.

Max-Utility Based Arm Selection Strategy For Sequential Query Recommendations

no code implementations31 Aug 2021 Shameem A. Puthiya Parambath, Christos Anagnostopoulos, Roderick Murray-Smith, Sean MacAvaney, Evangelos Zervas

We show that such a selection strategy often results in higher cumulative regret and to this end, we propose a selection strategy based on the maximum utility of the arms.

Multi-Armed Bandits

A Proactive Management Scheme for Data Synopses at the Edge

no code implementations22 Jul 2021 Kostas Kolomvatsos, Christos Anagnostopoulos

Our model can reveal the differences in the exchanged synopses and provide a datasets similarity map which becomes the appropriate knowledge base to support the desired processing activities.

Decision Making Edge-computing +1

Cooperative Multi-Modal Localization in Connected and Autonomous Vehicles

no code implementations16 Jul 2021 Nikos Piperigkos, Aris S. Lalos, Kostas Berberidis, Christos Anagnostopoulos

Cooperative Localization is expected to play a crucial role in various applications in the field of Connected and Autonomous vehicles (CAVs).

Autonomous Vehicles Position

An Intelligent Edge-Centric Queries Allocation Scheme based on Ensemble Models

no code implementations12 Aug 2020 Kostas Kolomvatsos, Christos Anagnostopoulos

The combination of Internet of Things (IoT) and Edge Computing (EC) can assist in the delivery of novel applications that will facilitate end users activities.

Decision Making Edge-computing +1

Data Synopses Management based on a Deep Learning Model

no code implementations1 Aug 2020 Panagiotis Fountas, Kostas Kolomvatsos, Christos Anagnostopoulos

An ecosystem of intelligent nodes is created at the EC giving the opportunity to support cooperative models.

Edge-computing Management

ML-AQP: Query-Driven Approximate Query Processing based on Machine Learning

2 code implementations14 Mar 2020 Fotis Savva, Christos Anagnostopoulos, Peter Triantafillou

As more and more organizations rely on data-driven decision making, large-scale analytics become increasingly important.

Databases

Adaptive Learning of Aggregate Analytics under Dynamic Workloads

no code implementations13 Aug 2019 Fotis Savva, Christos Anagnostopoulos, Peter Triantafillou

Large organizations have seamlessly incorporated data-driven decision making in their operations.

Decision Making

Explaining Aggregates for Exploratory Analytics

no code implementations29 Dec 2018 Fotis Savva, Christos Anagnostopoulos, Peter Triantafillou

Analysts wishing to explore multivariate data spaces, typically pose queries involving selection operators, i. e., range or radius queries, which define data subspaces of possible interest and then use aggregation functions, the results of which determine their exploratory analytics interests.

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