University of Athens

∙ Athens , Greece ∙ 0 followers

It has been in continuous operation since its establishment in 1837 and is the oldest higher education institution of the modern Greek state and the first contemporary university in the Eastern Mediterranean.

Assisted Dictionary Learning for fMRI Data Analysis

Extracting information from functional magnetic resonance (fMRI) images ...
10/11/2016 ∙ by Manuel Morante Moreno, et al. ∙ 0 ∙ share

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Efficient KLMS and KRLS Algorithms: A Random Fourier Feature Perspective

We present a new framework for online Least Squares algorithms for nonli...
06/12/2016 ∙ by Pantelis Bouboulis, et al. ∙ 0 ∙ share

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Robust Non-linear Regression: A Greedy Approach Employing Kernels with Application to Image Denoising

We consider the task of robust non-linear regression in the presence of ...
01/04/2016 ∙ by George Papageorgiou, et al. ∙ 0 ∙ share

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Asymptotically Optimal Multi-Armed Bandit Policies under a Cost Constraint

We develop asymptotically optimal policies for the multi armed bandit (M...
09/09/2015 ∙ by Apostolos N. Burnetas, et al. ∙ 0 ∙ share

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Complex Support Vector Machines for Regression and Quaternary Classification

The paper presents a new framework for complex Support Vector Regression...
03/09/2013 ∙ by Pantelis Bouboulis, et al. ∙ 0 ∙ share

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Adaptive Policies for Sequential Sampling under Incomplete Information and a Cost Constraint

We consider the problem of sequential sampling from a finite number of i...
01/19/2012 ∙ by Apostolos Burnetas, et al. ∙ 0 ∙ share

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Decoding Beta-Decay Systematics: A Global Statistical Model for Beta^- Halflives

Statistical modeling of nuclear data provides a novel approach to nuclea...
06/17/2008 ∙ by N. J. Costiris, et al. ∙ 0 ∙ share

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Compact Formulae in Sparse Elimination

It has by now become a standard approach to use the theory of sparse (or...
10/13/2017 ∙ by Ioannis Emiris, et al. ∙ 0 ∙ share

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Effectiveness of Anonymization in Double-Blind Review

Double-blind review relies on the authors' ability and willingness to ef...
09/05/2017 ∙ by Claire Le Goues, et al. ∙ 0 ∙ share

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Selling to Cournot oligopolists: pricing under uncertainty & generalized mean residual life

We study a classic Cournot market, which we extend to a two-stage game w...
09/27/2017 ∙ by Stefanos Leonardos, et al. ∙ 0 ∙ share

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The Intricacies of 3-Valued Extensional Semantics for Higher-Order Logic Programs

In (Bezem 1999; Bezem 2001), M. Bezem defined an extensional semantics f...
07/15/2017 ∙ by Panos Rondogiannis, et al. ∙ 0 ∙ share

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Killing Two Birds with One Stone -- Querying Property Graphs using SPARQL via GREMLINATOR

Knowledge graphs have become popular over the past decade and frequently...
01/25/2018 ∙ by Harsh Thakkar, et al. ∙ 0 ∙ share

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Social Event Scheduling

A major challenge for social event organizers (e.g., event planning comp...
01/30/2018 ∙ by Nikos Bikakis, et al. ∙ 0 ∙ share

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Bayesian analysis of predictive Non-Homogeneous hidden Markov models using Polya-Gamma data augmentation

We consider Non-Homogeneous Hidden Markov Models (NHHMMs) for forecastin...
02/08/2018 ∙ by Constandina Koki, et al. ∙ 0 ∙ share

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Upstream Demand Uncertainty in a Two-Echelon Supply Chain: Comparative Statics via Stochastic Orderings

We revisit the classic Cournot model and extend it to a two-echelon supp...
03/09/2018 ∙ by Constandina Koki, et al. ∙ 0 ∙ share

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Practical volume computation of structured convex bodies, and an application to modeling portfolio dependencies and financial crises

We examine volume computation of general-dimensional polytopes and more ...
03/15/2018 ∙ by Ludovic Cales, et al. ∙ 0 ∙ share

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Unsupervised learning of the brain connectivity dynamic using residual D-net

In this paper, we propose a novel unsupervised learning method to learn ...
04/20/2018 ∙ by Youngjoo Seo, et al. ∙ 0 ∙ share

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Approximation Fixpoint Theory and the Well-Founded Semantics of Higher-Order Logic Programs

We define a novel, extensional, three-valued semantics for higher-order ...
04/23/2018 ∙ by Angelos Charalambidis, et al. ∙ 0 ∙ share

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Algorithms for Deciding Membership in Polytopes of General Dimension

We study the fundamental problem of polytope membership aiming at large ...
04/30/2018 ∙ by Evangelos Anagnostopoulos, et al. ∙ 0 ∙ share

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Inference for a constrained parameter in presence of an uncertain constraint

We describe a hierarchical Bayesian approach for inference about a param...
06/07/2018 ∙ by Eric Marchand, et al. ∙ 0 ∙ share

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Maximum Rooted Connected Expansion

Prefetching constitutes a valuable tool toward efficient Web surfing. As...
06/25/2018 ∙ by Ioannis Lamprou, et al. ∙ 0 ∙ share

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The Stochastic Score Classification Problem

Consider the following Stochastic Score Classification Problem. A doctor...
06/27/2018 ∙ by Dimitrios Gkenosis, et al. ∙ 0 ∙ share

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Predicate Specialization for Definitional Higher-order Logic Programs

Higher-order logic programming is an interesting extension of traditiona...
08/13/2018 ∙ by Antonis Troumpoukis, et al. ∙ 0 ∙ share

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A Simple Network of Nodes Moving on the Circle

Two simple Markov processes are examined, one in discrete and one in con...
08/11/2018 ∙ by Dimitris Cheliotis, et al. ∙ 0 ∙ share

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Measuring Market Performance with Stochastic Demand: Price of Anarchy and Price of Uncertainty

Globally operating suppliers face the rising challenge of wholesale pric...
08/11/2018 ∙ by Costis Melolidakis, et al. ∙ 0 ∙ share

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Asymptotically Optimal Multi-Armed Bandit Activation Policies under Side Constraints

This paper introduces the first asymptotically optimal strategy for the ...
11/30/2018 ∙ by Apostolos N. Burnetas, et al. ∙ 0 ∙ share

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Algorithmically Efficient Syntactic Characterization of Possibility Domains

We call domain any arbitrary subset of a Cartesian power of the set {0,1...
01/01/2019 ∙ by Josep Diaz, et al. ∙ 0 ∙ share

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Comparative Analysis of Content-based Personalized Microblog Recommendations [Experiments and Analysis]

Microblogging platforms constitute a popular means of real-time communic...
01/16/2019 ∙ by Efi Karra Taniskidou, et al. ∙ 0 ∙ share

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An Alternative Paradigm for Developing and Pricing Storage on Smart Contract Platforms

Smart contract platforms facilitate the development of important and div...
02/03/2019 ∙ by Christos Patsonakis, et al. ∙ 0 ∙ share

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On the Practicality of Smart Contract PKI

Public key infrastructures (PKIs) are one of the main building blocks fo...
02/03/2019 ∙ by Christos Patsonakis, et al. ∙ 0 ∙ share

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Neural embeddings for metaphor detection in a corpus of Greek texts

One of the major challenges that NLP faces is metaphor detection, especi...
02/10/2019 ∙ by Eirini Florou, et al. ∙ 0 ∙ share

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Word embeddings for idiolect identification

The term idiolect refers to the unique and distinctive use of language o...
02/10/2019 ∙ by Konstantinos Perifanos, et al. ∙ 0 ∙ share

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Deep Learning for UL/DL Channel Calibration in Generic Massive MIMO Systems

One of the fundamental challenges to realize massive Multiple-Input Mult...
03/07/2019 ∙ by Chongwen Huang, et al. ∙ 0 ∙ share

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Smart Radio Environments Empowered by AI Reconfigurable Meta-Surfaces: An Idea Whose Time Has Come

Future wireless networks are expected to constitute a distributed intell...
03/21/2019 ∙ by Marco Di Renzo, et al. ∙ 0 ∙ share

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Oceanic Games: Centralization Risks and Incentives in Blockchain Mining

To participate in the distributed consensus of permissionless blockchain...
04/04/2019 ∙ by Nikos Leonardos, et al. ∙ 0 ∙ share

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Next-Paradigm Programming Languages: What Will They Look Like and What Changes Will They Bring?

The dream of programming language design is to bring about orders-of-mag...
05/01/2019 ∙ by Yannis Smaragdakis, et al. ∙ 0 ∙ share

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Heaps Don't Lie: Countering Unsoundness with Heap Snapshots

Static analyses aspire to explore all possible executions in order to ac...
05/06/2019 ∙ by Neville Grech, et al. ∙ 0 ∙ share

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Practical Volume Estimation by a New Annealing Schedule for Cooling Convex Bodies

We study the problem of estimating the volume of convex polytopes, focus...
05/14/2019 ∙ by Apostolos Chalkis, et al. ∙ 0 ∙ share

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MinoanER: Schema-Agnostic, Non-Iterative, Massively Parallel Resolution of Web Entities

Entity Resolution (ER) aims to identify different descriptions in variou...
05/15/2019 ∙ by Vasilis Efthymiou, et al. ∙ 0 ∙ share

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A Survey of Blocking and Filtering Techniques for Entity Resolution

Efficiency techniques are an integral part of Entity Resolution, since i...
05/15/2019 ∙ by George Papadakis, et al. ∙ 0 ∙ share

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End-to-End Entity Resolution for Big Data: A Survey

One of the most important tasks for improving data quality and the relia...
05/15/2019 ∙ by Vassilis Christophides, et al. ∙ 0 ∙ share

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Schema-agnostic Progressive Entity Resolution (extended version)

Entity Resolution (ER) is the task of finding entity profiles that corre...
05/15/2019 ∙ by Giovanni Simonini, et al. ∙ 0 ∙ share

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Indoor Signal Focusing with Deep Learning Designed Reconfigurable Intelligent Surfaces

Reconfigurable Intelligent Surfaces (RISs) comprised of tunable unit ele...
05/19/2019 ∙ by Chongwen Huang, et al. ∙ 0 ∙ share

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Voronoi diagram of orthogonal polyhedra in two and three dimensions

Voronoi diagrams are a fundamental geometric data structure for obtainin...
05/21/2019 ∙ by Ioannis Z. Emiris, et al. ∙ 0 ∙ share

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Improved Budgeted Connected Domination and Budgeted Edge-Vertex Domination

We consider the budgeted version of the classical connected dominating s...
07/15/2019 ∙ by Ioannis Lamprou, et al. ∙ 0 ∙ share

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Infant Mortality Prediction using Birth Certificate Data

The Infant Mortality Rate (IMR) is the number of infants per 1000 that d...
07/21/2019 ∙ by Antonia Saravanou, et al. ∙ 0 ∙ share

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The Expressive Power of Higher-Order Datalog

A classical result in descriptive complexity theory states that Datalog ...
07/23/2019 ∙ by Angelos Charalambidis, et al. ∙ 0 ∙ share

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Deep Static Modeling of invokedynamic

Java 7 introduced programmable dynamic linking in the form of the invoke...
01/08/2020 ∙ by George Fourtounis, et al. ∙ 0 ∙ share

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Hide Me: Enabling Location Privacy in Heterogeneous Vehicular Networks

To support location-based services, vehicles must share their location w...
01/20/2020 ∙ by Tobias Meuser, et al. ∙ 0 ∙ share

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Parallel Factor Decomposition Channel Estimation in RIS-Assisted Multi-User MISO Communication

Reconfigurable Intelligent Surfaces (RISs) have been recently considered...
01/26/2020 ∙ by Li Wei, et al. ∙ 0 ∙ share

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