
Assisted Dictionary Learning for fMRI Data Analysis
Extracting information from functional magnetic resonance (fMRI) images ...
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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...
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Robust Nonlinear Regression: A Greedy Approach Employing Kernels with Application to Image Denoising
We consider the task of robust nonlinear regression in the presence of ...
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Asymptotically Optimal MultiArmed Bandit Policies under a Cost Constraint
We develop asymptotically optimal policies for the multi armed bandit (M...
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Complex Support Vector Machines for Regression and Quaternary Classification
The paper presents a new framework for complex Support Vector Regression...
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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...
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Decoding BetaDecay Systematics: A Global Statistical Model for Beta^ Halflives
Statistical modeling of nuclear data provides a novel approach to nuclea...
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Compact Formulae in Sparse Elimination
It has by now become a standard approach to use the theory of sparse (or...
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Effectiveness of Anonymization in DoubleBlind Review
Doubleblind review relies on the authors' ability and willingness to ef...
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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 twostage game w...
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The Intricacies of 3Valued Extensional Semantics for HigherOrder Logic Programs
In (Bezem 1999; Bezem 2001), M. Bezem defined an extensional semantics f...
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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...
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Social Event Scheduling
A major challenge for social event organizers (e.g., event planning comp...
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Bayesian analysis of predictive NonHomogeneous hidden Markov models using PolyaGamma data augmentation
We consider NonHomogeneous Hidden Markov Models (NHHMMs) for forecastin...
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Upstream Demand Uncertainty in a TwoEchelon Supply Chain: Comparative Statics via Stochastic Orderings
We revisit the classic Cournot model and extend it to a twoechelon supp...
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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 generaldimensional polytopes and more ...
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Unsupervised learning of the brain connectivity dynamic using residual Dnet
In this paper, we propose a novel unsupervised learning method to learn ...
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Approximation Fixpoint Theory and the WellFounded Semantics of HigherOrder Logic Programs
We define a novel, extensional, threevalued semantics for higherorder ...
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Algorithms for Deciding Membership in Polytopes of General Dimension
We study the fundamental problem of polytope membership aiming at large ...
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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...
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Maximum Rooted Connected Expansion
Prefetching constitutes a valuable tool toward efficient Web surfing. As...
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The Stochastic Score Classification Problem
Consider the following Stochastic Score Classification Problem. A doctor...
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Predicate Specialization for Definitional Higherorder Logic Programs
Higherorder logic programming is an interesting extension of traditiona...
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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...
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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...
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Asymptotically Optimal MultiArmed Bandit Activation Policies under Side Constraints
This paper introduces the first asymptotically optimal strategy for the ...
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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...
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Comparative Analysis of Contentbased Personalized Microblog Recommendations [Experiments and Analysis]
Microblogging platforms constitute a popular means of realtime communic...
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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...
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On the Practicality of Smart Contract PKI
Public key infrastructures (PKIs) are one of the main building blocks fo...
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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...
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Word embeddings for idiolect identification
The term idiolect refers to the unique and distinctive use of language o...
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Deep Learning for UL/DL Channel Calibration in Generic Massive MIMO Systems
One of the fundamental challenges to realize massive MultipleInput Mult...
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Smart Radio Environments Empowered by AI Reconfigurable MetaSurfaces: An Idea Whose Time Has Come
Future wireless networks are expected to constitute a distributed intell...
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Oceanic Games: Centralization Risks and Incentives in Blockchain Mining
To participate in the distributed consensus of permissionless blockchain...
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NextParadigm Programming Languages: What Will They Look Like and What Changes Will They Bring?
The dream of programming language design is to bring about ordersofmag...
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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...
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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...
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MinoanER: SchemaAgnostic, NonIterative, Massively Parallel Resolution of Web Entities
Entity Resolution (ER) aims to identify different descriptions in variou...
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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...
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EndtoEnd Entity Resolution for Big Data: A Survey
One of the most important tasks for improving data quality and the relia...
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Schemaagnostic Progressive Entity Resolution (extended version)
Entity Resolution (ER) is the task of finding entity profiles that corre...
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Indoor Signal Focusing with Deep Learning Designed Reconfigurable Intelligent Surfaces
Reconfigurable Intelligent Surfaces (RISs) comprised of tunable unit ele...
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Voronoi diagram of orthogonal polyhedra in two and three dimensions
Voronoi diagrams are a fundamental geometric data structure for obtainin...
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Improved Budgeted Connected Domination and Budgeted EdgeVertex Domination
We consider the budgeted version of the classical connected dominating s...
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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...
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The Expressive Power of HigherOrder Datalog
A classical result in descriptive complexity theory states that Datalog ...
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Deep Static Modeling of invokedynamic
Java 7 introduced programmable dynamic linking in the form of the invoke...
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Hide Me: Enabling Location Privacy in Heterogeneous Vehicular Networks
To support locationbased services, vehicles must share their location w...
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Parallel Factor Decomposition Channel Estimation in RISAssisted MultiUser MISO Communication
Reconfigurable Intelligent Surfaces (RISs) have been recently considered...
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University of Athens
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.