National Technical University of Athens

research

∙ 06/03/2020

Hierarchical forecast reconciliation with machine learning

Hierarchical forecasting methods have been widely used to support aligne...

Evangelos Spiliotis, et al. ∙

research

∙ 11/25/2019

A Unified Deep Learning Approach for Prediction of Parkinson's Disease

The paper presents a novel approach, based on deep learning, for diagnos...

James Wingate, et al. ∙

research

∙ 04/21/2020

How to track your dragon: A Multi-Attentional Framework for real-time RGB-D 6-DOF Object Pose Tracking

We present a novel multi-attentional convolutional architecture to tackl...

Isidoros Marougkas, et al. ∙

research

∙ 07/07/2021

An audiovisual and contextual approach for categorical and continuous emotion recognition in-the-wild

In this work we tackle the task of video-based audio-visual emotion reco...

Panagiotis Antoniadis, et al. ∙

research

∙ 12/28/2020

Enhancing Handwritten Text Recognition with N-gram sequence decomposition and Multitask Learning

Current state-of-the-art approaches in the field of Handwritten Text Rec...

Vasiliki Tassopoulou, et al. ∙

research

∙ 05/04/2022

Evaluating Transferability for Covid 3D Localization Using CT SARS-CoV-2 segmentation models

Recent studies indicate that detecting radiographic patterns on CT scans...

Constantine Maganaris, et al. ∙

research

∙ 07/19/2022

OpenFilter: A Framework to Democratize Research Access to Social Media AR Filters

Augmented Reality or AR filters on selfies have become very popular on s...

Piera Riccio, et al. ∙

research

∙ 02/27/2019

Shallow Water Bathymetry Mapping from UAV Imagery based on Machine Learning

The determination of accurate bathymetric information is a key element f...

Panagiotis Agrafiotis, et al. ∙

research

∙ 01/07/2019

Fusing Body Posture with Facial Expressions for Joint Recognition of Affect in Child-Robot Interaction

In this paper we address the problem of multi-cue affect recognition in ...

Panagiotis P. Filntisis, et al. ∙

research

∙ 06/28/2019

A linear method for camera pair self-calibration and multi-view reconstruction with geometrically verified correspondences

We examine 3D reconstruction of architectural scenes in unordered sets o...

Nikos Melanitis, et al. ∙

research

∙ 12/03/2017

Multimodal Visual Concept Learning with Weakly Supervised Techniques

Despite the availability of a huge amount of video data accompanied by d...

Giorgos Bouritsas, et al. ∙

research

∙ 01/07/2017

Structural Attention Neural Networks for improved sentiment analysis

We introduce a tree-structured attention neural network for sentences an...

Filippos Kokkinos, et al. ∙

research

∙ 10/12/2017

A Finite Element Computational Framework for Active Contours on Graphs

In this paper we present a new framework for the solution of active cont...

Nikolaos Kolotouros, et al. ∙

research

∙ 01/22/2016

Online Event Recognition from Moving Vessel Trajectories

We present a system for online monitoring of maritime activity over stre...

Kostas Patroumpas, et al. ∙

research

∙ 08/11/2015

Answering Fuzzy Conjunctive Queries over Finitely Valued Fuzzy Ontologies

Fuzzy Description Logics (DLs) provide a means for representing vague kn...

Stefan Borgwardt, et al. ∙

research

∙ 08/02/2016

Global Vertices and the Noising Paradox

A theoretical and experimental analysis related to the identification of...

Konstantinos A. Raftopoulos, et al. ∙

research

∙ 07/31/2016

Data-Driven Background Subtraction Algorithm for in-Camera Acceleration in Thermal Imagery

Detection of moving objects in videos is a crucial step towards successf...

Konstantinos Makantasis, et al. ∙

research

∙ 07/28/2016

Incremental Noising and its Fractal Behavior

This manuscript is about further elucidating the concept of noising. The...

Konstantinos A. Raftopoulos, et al. ∙

research

∙ 10/09/2012

Optimization in Differentiable Manifolds in Order to Determine the Method of Construction of Prehistoric Wall-Paintings

In this paper a general methodology is introduced for the determination ...

Dimitris Arabadjis, et al. ∙

research

∙ 10/31/2011

Reasoning with Very Expressive Fuzzy Description Logics

It is widely recognized today that the management of imprecision and vag...

I. Horrocks, et al. ∙

research

∙ 06/29/2015

Variational Inference for Background Subtraction in Infrared Imagery

We propose a Gaussian mixture model for background subtraction in infrar...

Konstantinos Makantasis, et al. ∙

research

∙ 11/15/2017

Performance Analysis and Optimization of Sparse Matrix-Vector Multiplication on Modern Multi- and Many-Core Processors

This paper presents a low-overhead optimizer for the ubiquitous sparse m...

Athena Elafrou, et al. ∙

research

∙ 11/06/2017

Multimodal Signal Processing and Learning Aspects of Human-Robot Interaction for an Assistive Bathing Robot

We explore new aspects of assistive living on smart human-robot interact...

A. Zlatintsi, et al. ∙

research

∙ 11/06/2017

Joining Local Knowledge to Communicate Reliably (Extended Abstract)

A fundamental primitive in distributed computing is Reliable Message Tra...

Aris Pagourtzis, et al. ∙

research

∙ 04/10/2017

A Decision Tree Based Approach Towards Adaptive Profiling of Distributed Applications

The adoption of the distributed paradigm has allowed applications to inc...

Ioannis Giannakopoulos, et al. ∙

research

∙ 09/12/2017

Skyline Queries in O(1) time?

The skyline of a set P of points (SKY(P)) consists of the "best" points ...

Spyros Sioutas, et al. ∙

research

∙ 08/31/2017

Simple Compact Monotone Tree Drawings

A monotone drawing of a graph G is a straight-line drawing of G such tha...

Anargyros Oikonomou, et al. ∙

research

∙ 08/30/2017

Planar Drawings of Fixed-Mobile Bigraphs

A fixed-mobile bigraph G is a bipartite graph such that the vertices of ...

Michael Bekos, et al. ∙

research

∙ 10/06/2017

Validating Intelligent Power and Energy Systems - A Discussion of Educational Needs

Traditional power systems education and training is flanked by the deman...

Panos Kotsampopoulos, et al. ∙

research

∙ 01/30/2018

Social Event Scheduling

A major challenge for social event organizers (e.g., event planning comp...

Nikos Bikakis, et al. ∙

research

∙ 03/10/2018

Dynamically Efficient Kinematics for Hyper-Redundant Manipulators

A hyper-redundant robotic arm is a manipulator with many degrees of free...

Marios P. Xanthidis, et al. ∙

research

∙ 03/27/2018

A Faster FPTAS for the Subset-Sums Ratio Problem

The Subset-Sums Ratio problem (SSR) is an optimization problem in which,...

Nikolaos Melissinos, et al. ∙

research

∙ 05/13/2018

SPAIDS and OAMS Models in Wireless Ad Hoc Networks

In this paper, we present two randomized distributed algorithms in wirel...

Aikaterini Nikolidaki, et al. ∙

research

∙ 06/01/2018

Pattern Search MDS

We present a novel view of nonlinear manifold learning using derivative-...

Georgios Paraskevopoulos, et al. ∙

research

∙ 06/05/2018

A New Theoretical Evaluation Framework for Satisfaction Equilibria in Wireless Networks

In this paper, a theoretical evaluation framework regarding the Satisfac...

Michail Fasoulakis, et al. ∙

research

∙ 06/01/2018

Pattern Search Multidimensional Scaling

We present a novel view of nonlinear manifold learning using derivative-...

Georgios Paraskevopoulos, et al. ∙

research

∙ 06/12/2018

Drawing a Rooted Tree as a Rooted y-Monotone Minimum Spanning Tree

Given a rooted point set P, the rooted y-Monotone Minimum Spanning Tree ...

Konstantinos Mastakas, et al. ∙

research

∙ 06/22/2018

Uniform 2D-Monotone Minimum Spanning Graphs

A geometric graph G is xy-monotone if each pair of vertices of G is conn...

Konstantinos Mastakas, et al. ∙

research

∙ 08/11/2018

A Simple Network of Nodes Moving on the Circle

Two simple Markov processes are examined, one in discrete and one in con...

Dimitris Cheliotis, et al. ∙

research

∙ 09/03/2018

NTUA-SLP at IEST 2018: Ensemble of Neural Transfer Methods for Implicit Emotion Classification

In this paper we present our approach to tackle the Implicit Emotion Sha...

Alexandra Chronopoulou, et al. ∙

research

∙ 09/06/2018

A Bridge between Liquid and Social Welfare in Combinatorial Auctions with Submodular Bidders

We study incentive compatible mechanisms for Combinatorial Auctions wher...

Dimitris Fotakis, et al. ∙

research

∙ 11/01/2018

Tropical Modeling of Weighted Transducer Algorithms on Graphs

Weighted Finite State Transducers (WFSTs) are versatile data structures ...

Emmanouil Theodosis, et al. ∙

research

∙ 11/02/2018

Planar Graphs of Bounded Degree have Constant Queue Number

A queue layout of a graph consists of a linear order of its vertices and...

Michael A. Bekos, et al. ∙

research

∙ 11/01/2018

An Adaptive Pruning Algorithm for Spoofing Localisation Based on Tropical Geometry

The problem of spoofing attacks is increasingly relevant as digital syst...

Emmanouil Theodosis, et al. ∙

research

∙ 11/09/2018

Integrating Recurrence Dynamics for Speech Emotion Recognition

We investigate the performance of features that can capture nonlinear re...

Efthymios Tzinis, et al. ∙

research

∙ 11/23/2018

Improved Frequency Modulation Features for Multichannel Distant Speech Recognition

Frequency modulation features capture the fine structure of speech forma...

Isidoros Rodomagoulakis, et al. ∙

research

∙ 12/03/2018

SUSiNet: See, Understand and Summarize it

In this work we propose a multi-task spatio-temporal network, called SUS...

Petros Koutras, et al. ∙

research

∙ 12/01/2018

A Deep Learning Approach for Multi-View Engagement Estimation of Children in a Child-Robot Joint Attention task

In this work we tackle the problem of child engagement estimation while ...

Jack Hadfield, et al. ∙

research

∙ 12/01/2018

On-line Human Gait Stability Prediction using LSTMs for the fusion of Deep-based Pose Estimation and LRF-based Augmented Gait State Estimation in an Intelligent Robotic Rollato

In this work we present a novel Long Short Term Memory (LSTM) based on-l...

Georgia Chalvatzaki, et al. ∙

research

∙ 11/20/2018

Playing with and against Hedge

Hedge has been proposed as an adaptive scheme, which guides an agent's d...

Miltiades E. Anagnostou, et al. ∙

National Technical University of Athens

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