Book chapters

 

Recent Submissions

  • SVS: Can the shared variable paradigm exist in massively parallel multiprocessor architectures? 

    Dimitrelos, Dimitris; Halatsis, Constantin (IEEE, 1995-04)
    During recent years there have been many efforts aimed towards the elimination of the gap between shared memory and message passing parallel computers. Many researchers have addressed the problem by implementing distributed ...

  • MAGE: A Massively Agent Execution System for logic programming 

    Mourlas, Constantin; Halatsis, Constantin (Springer Berlin Heidelberg, 1994)
    In this article, we describe the Massively AGent Execution system (MAGE), whose purpose is to facilitate the implementation of multiagent applications in a massively parallel environment. MAGE is a parallel programming ...

  • Predictive Automated Negotiators Employing Risk-Seeking and Risk-Averse Strategies 

    Masvoula, Marisa; Halatsis, Constantin; Martakos, Drakoulis (Springer International Publishing, 2011)
    Intelligent agents that seek to automate various stages of the negotiation process are often enhanced with models of computational intelligence extending the cognitive abilities of the parties they represent. This paper ...

  • Constructing An Affective Path To Support Learners In A Distance Learning Environment 

    Leontidis, Makis; Halatsis, Constantin (2009-07)
    This paper presents an ontology-based method for the selection of the suitable sequence of affective tactics in the context of MENTOR. MENTOR is a Web-based Adaptive Educational Environment where the learner’s needs and ...

  • A versatile module system for Prolog mapped to flat prolog 

    Karali, Isambo; Pelecanos, Evangelos; Halatsis, Constantin (ACM New York, 1993)
    This paper presents a module system for Frolog with large functionality, flexibility and various desirable properties. No restriction to the use of ordinary Prolog is imposed. On the contrary, the set of the relevant extra ...

  • Extensions to a parallel prolog system to support real-time applications 

    Mourlas, Constantin; Halatsis, Constantin (Springer Berlin Heidelberg, 1992)
    In this article, we first discuss the Real-Time (RT) programming issues and what language support should be provided for building RT applications. Then we propose a set of RT extensions for a parallel Prolog system and we ...

  • Using an Ontological Approach to Support the Student Affectively 

    Leontidis, Makis; Halatsis, Constantin; Grigoriadou, Maria; Vazouras, Spyros (Association for the Advancement of Computing in Education (AACE), 2009-06-22)
    This paper is presenting a framework for the support of the student’s actions in an affective way during the learning process. The proposed framework makes use of an ontological approach in combination with the Bayesian ...

  • Supporting Learner’s Needs with an Ontology-Based Bayesian Network 

    Leontidis, Makis; Halatsis, Constantin (IEEE, 2009-07-15)
    This paper presents a study of MENTOR, a web adaptive educational environment (WBES), where the learnerpsilas needs and preferences are diagnosed using an ontology-based Bayesian network approach during the learning process. ...

  • MENTORing Affectively the Student to Enhance his Learning 

    Leontidis, M.; Halatsis, Constantin; Grigoriadou, Maria (IEEE, 2009)
    In this paper a Web-based adaptive educational system to support personalized distance learning, which is named MENTOR is presented. The main purpose of MENTOR is to support learnerpsilas actions during the learning process ...

  • A Comparative Study of Four Ontology Visualization Techniques in Protégé: Experiment Setup and Preliminary Results 

    Katifori, Akrivi; Torou, Elena; Halatsis, Constantin; Lepouras, Georgios; Vassilakis, Costas (IEEE Xplore, 2006)
    The continuing need for more effective information retrieval has lead to the creation of the notions of the semantic Web and personalized information management, areas of study that very often employ ontologies to represent ...

  • Integrating Learning Styles and Personality Traits into an Affective Model to Support Learner’s Learning 

    Leontidis, Makis; Halatsis, Constantin (Springer International Publishing, 2009)
    The aim of this paper is to present a model in order to integrate the learning style and the personality traits of a learner into an enhanced Affective Style which is stored in the learner’s model. This model which can ...

  • An Ontological Approach to Infer Student’s Emotions 

    Leontidis, Makis; Halatsis, Constantin; Grogoriadou, Maria (Springer International Publishing, 2009)
    This paper presents a method which is based on an Ontological Approach in combination with the Bayesian Network (BN) model in order to elicit student’s emotion during the learning process. The produced Ontology serves as ...

  • e-Learning Issues under an Affective Perspective 

    Leontidis, Makis; Halatsis, Constantin; Grigoriadou, Maria (Springer Berlin Heidelberg, 2008)
    The aim of this paper is to present an Affective Educational Module for distance learning which is called MENTOR. MENTOR constitutes of three main components, the Emotional Component, the Teacher Component and the Visualization ...

  • Efficient modular design of TSC checkers for m-out-of-2m codes 

    Paschalis, A. M.; Nikolos, D.; Halatsis, Constantin (Springer Berlin Heidelberg, 1986)
    A new design method of TSC m-out-of-2m code checkers is presented. The design is composed basically of two full-adder/half-adder trees, each summing-up the one's of m input lines, and a k-variable 2-pair two-rail code tree ...

  • A refinement of import/export declarations in modular logic programming and its semantics 

    Karali, Isambo; Halatsis, Constantin (Springer Berlin Heidelberg, 1995)
    Encapsulation constructs with import/export declarations is the structuring facility offered in most commercial Prolog systems. However, real-life applications have shown to require a finer information exchange between ...

  • Efficient Test Generation for Register Transfer Level Descriptions 

    Stamelos, I.; Halatsis, Constantin (1987)
    Test generation based on high level circuit descriptions, has been proposed in the recent years, for LSI and VLSI products. However, not all aspects of the problem have been thoroughly examined. This paper describes an ...

  • Measures of Intrinsic Hardness for Constraint Satisfaction Problem Instances 

    Boukeas, George; Halatsis, Constantin; Zissimopoulos, Vassilis; Stamatopoulos, Panagiotis (Springer Berlin Heidelberg, 2004)
    Our aim is to investigate the factors which determine the intrinsic hardness of constructing a solution to any particular constraint satisfaction problem instance, regardless of the algorithm employed. The line of reasoning ...

  • Inherent Choice in the Search Space of Constraint Satisfaction Problem Instances 

    Boukeas, George; Stamatopoulos, Panagiotis; Halatsis, Constantin; Zissimopoulos, Vassilis (Springer Berlin Heidelberg, 2004)
    Constructive methods obtain solutions to constraint satisfaction problem instances by iteratively extending consistent partial assignments. In this research, we study the solution paths in the search space of constructive ...

  • eg-GRIDS: Context-Free Grammatical Inference from Positive Examples Using Genetic Search 

    Petasis, Georgios; Paliouras, Georgios; Spyropoulos, Constantine D.; Halatsis, Constantin (Springer Berlin Heidelberg, 2004)
    In this paper we present eg-GRIDS, an algorithm for inducing context-free grammars that is able to learn from positive sample sentences. The presented algorithm, similar to its GRIDS predecessors, uses simplicity as a ...

  • Affective issues in adaptive educational environments 

    Leontidis, Makis; Halatsis, Constantin (2008)
    Research in computer science recently began to take emotions into account because their influence in perception, reasoning, decision-making and learning is considered catalytic. In learning the appropriate sentimental ...

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