Browsing by Subject "Information theory"

Now showing items 21-40 of 45

    • Conference Object  

      Is robustness of stochastic uncertain systems related to information theory and statistical mechanics? 

      Charalambous, Charalambos D.; Kyprianou, Andreas (Affiliation: Department of Electrical and Computer Engineering, University of Cyprus, Nicosia, CyprusAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusAffiliation: School of Information Technology and Engineering, University of Ottawa, 161 Louis Pasteur, A519, Ottawa, Ont. K1N 6N5, CanadaCorrespondence Address: Charalambous, C.D.Department of Electrical and Computer Engineering, University of Cyprus, Nicosia, Cyprusemail: chadcha@ucy.ac.cy, 2005)
      Fifty years ago, when Claude Shannon was developing the Mathematical Theory of Communications, for reliable data transmission, which evolved into the subject of information theory, another discipline was developing dealing ...
    • Conference Object  

      Is robustness of stochastic uncertain systems related to information theory and statistical mechanics? 

      Charalambous, C. D.; Kyprianou, Andreas (Affiliation: Department of Electrical and Computer Engineering, University of Cyprus, Nicosia, CyprusAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusAffiliation: School of Information Technology and Engineering, University of Ottawa, 161 Louis Pasteur, A519, Ottawa, Ont. K1N 6N5, CanadaCorrespondence Address: Charalambous, C.D.Department of Electrical and Computer Engineering, University of Cyprus, Nicosia, Cyprusemail: chadcha@ucy.ac.cy, 2005)
      Fifty years ago, when Claude Shannon was developing the Mathematical Theory of Communications, for reliable data transmission, which evolved into the subject of information theory, another discipline was developing dealing ...
    • Conference Object  

      Large deviations and deterministic measures of information 

      Charalambous, Charalambos D.; Djouadi, S. M. (Institute of Electrical and Electronics Engineers Inc., 2003)
      In recent years, Large Deviations theory has found important applications in many areas of engineering and science including communication and control systems. The objective of this note is to introduce and explore connections ...
    • Conference Object  

      Lossless coding with generalized criteria 

      Charalambous, T.; Charalambous, Charalambos D.; Rezaei, F. (2011)
      This paper presents prefix codes which minimize various criteria constructed as a convex combination of maximum codeword length and average codeword length, or, a convex combination of the average of an exponential function ...
    • Doctoral Thesis  Open Access

      Nonanticipative information theory 

      Kourtellaris, Christos K. (Πανεπιστήμιο Κύπρου, Πολυτεχνική Σχολή / University of Cyprus, Faculty of Engineering, 2014-06)
      Η κλασσική θεωρία πληροφορίας χρησιμοποιεί την αμοιβαία πληροφορία για να ορίσει τη χωρητικότητα των καναλιών και τη συμπίεση των πηγών πληροφορίας. Για κανάλια και πηγές χωρίς μνήμη και ανατροφοδότηση, το μέτρο αυτό μπορεί ...
    • Conference Object  

      Nonanticipative transmission for sources and channels with memory 

      Kourtellaris, C. K.; Charalambous, Charalambos D.; Boutros, J. J. (Institute of Electrical and Electronics Engineers Inc., 2015)
      In this paper we analyze nonanticipative (delayless) transmission of source symbols with memory over channels with memory (with and without feedback). We employ duality of source, channel pairs with respect to distortion ...
    • Article  

      Nonparametric Maximum Entropy 

      Politis, Dimitris Nicolas (1993)
      The standard maximum entropy method of Burg and the resulting autoregressive model has been widely applied for spectrum estimation and prediction. A generalization of the maximum entropy formalism in a nonparametric setting ...
    • Conference Object  

      On optimal signaling over secure MIMO channels 

      Loyka, S.; Charalambous, Charalambos D. (2012)
      Optimal signalling over the wire-tap MIMO Gaussian channel is studied under the total transmit power constraint. A direct proof of the necessary condition of optimality (signaling on the positive directions of the difference ...
    • Conference Object  

      On the capacity of a class of MIMO channels subject to normed uncertainty 

      Loyka, S.; Charalambous, Charalambos D. (2008)
      The compound capacity of uncertain MIMO channels is considered, when the channel is modeled by a class described by an induced norm constraint. Within this framework, two types of classes are investigated, namely, additive ...
    • Conference Object  

      Outage probability under channel distribution uncertainty 

      Ioannou, I.; Charalambous, Charalambos D.; Loyka, S. (2011)
      Outage probability of a class of block-fading (MIMO) channels is considered under channel distribution uncertainty, when the channel or its distribution are not known but the latter is known to belong to a class of ...
    • Article  

      Performing dynamically injected tasks on processes prone to crashes and restarts 

      Georgiou, Chryssis; Kowalski, D. R. (2011)
      To identify the tradeoffs between efficiency and fault-tolerance in dynamic cooperative computing, we initiate the study of a task performing problem under dynamic processes' crashes/restarts and task injections. The system ...
    • Conference Object  

      A pragmatic methodology to web service discovery 

      Tamani, E.; Evripidou, Paraskevas (2007)
      As in linguistics the semantics co-exist with pragmatics to provide complete and unambiguous meaning to utterances, in the same way the pragmatics should augment the semantics in intelligent applications. Service-Oriented ...
    • Conference Object  

      Rank-deficient solutions for optimal signaling over secure MIMO channels 

      Loyka, S.; Charalambous, Charalambos D. (Institute of Electrical and Electronics Engineers Inc., 2014)
      Capacity-achieving signaling strategies for the Gaussian wiretap MIMO channel are investigated without the degradedness assumption. In addition to known solutions, a number of new rank-deficient solutions for the optimal ...
    • Doctoral Thesis  

      Reasoning about systems with evolving structure 

      Philippou, Anna (University of Warwick, 1996)
    • Conference Object  

      Relations between information theory, robustness, and statistical mechanics of stochastic systems 

      Charalambous, Charalambos D.; Rezaei, F.; Kyprianou, Andreas (2004)
      The fundamental question, which will be addressed in this talk are the relations between dissipation, which is a concept of robustness, entropy rate, which is a concept of information theory, and statistical mechanics. ...
    • Conference Object  

      Relations between information theory, robustness, and statistical mechanics of stochastic systems 

      Charalambous, Charalambos D.; Rezaei, F.; Kyprianou, Andreas (Affiliation: Sch. of Info. Technol. and Eng., University of Ottawa, 161 Louis Pasteur, A519, Ottawa, Ont. K1N 6N5, CanadaAffiliation: Electrical Engineering Department, University of Cyprus, 75 Kallipoleos Avenue, Nicosia, CyprusAffiliation: Sch. of Info. Technol. and Eng., University of Ottawa, 800 King Edward Ave., Ottawa, Ont. K1N 6N5, CanadaAffiliation: Mechanical Engineering Department, University of Cyprus, 75 Kallipoleos Avenue, Nicosia, CyprusCorrespondence Address: Charalambous, C.D.Sch. of Info. Technol. and Eng., University of Ottawa, 161 Louis Pasteur, A519, Ottawa, Ont. K1N 6N5, Canadaemail: chadcha@site.uottawa.ca, 2004)
      The fundamental question, which will be addressed in this talk are the relations between dissipation, which is a concept of robustness, entropy rate, which is a concept of information theory, and statistical mechanics. ...
    • Conference Object  

      Relations between information theory, robustness, and statistical mechanics of stochastic systems 

      Charalambous, C. D.; Rezaei, F.; Kyprianou, Andreas (Affiliation: Sch. of Info. Technol. and Eng., University of Ottawa, 161 Louis Pasteur, A519, Ottawa, Ont. K1N 6N5, CanadaAffiliation: Electrical Engineering Department, University of Cyprus, 75 Kallipoleos Avenue, Nicosia, CyprusAffiliation: Sch. of Info. Technol. and Eng., University of Ottawa, 800 King Edward Ave., Ottawa, Ont. K1N 6N5, CanadaAffiliation: Mechanical Engineering Department, University of Cyprus, 75 Kallipoleos Avenue, Nicosia, CyprusCorrespondence Address: Charalambous, C.D.Sch. of Info. Technol. and Eng., University of Ottawa, 161 Louis Pasteur, A519, Ottawa, Ont. K1N 6N5, Canadaemail: chadcha@site.uottawa.ca, 2004)
      The fundamental question, which will be addressed in this talk are the relations between dissipation, which is a concept of robustness, entropy rate, which is a concept of information theory, and statistical mechanics. ...
    • Article  

      Robust coding for a class of sources: Applications in control and reliable communication over limited capacity channels 

      Farhadi, A.; Charalambous, Charalambos D. (2008)
      This paper is concerned with the control of a class of dynamical systems over finite capacity communication channels. Necessary conditions for reliable data reconstruction and stability of a class of dynamical systems are ...
    • Conference Object  

      Robust estimation with applications to phase and envelope estimation in frequency selective wireless fading channels 

      Socratous, Y.; Charalambous, Charalambos D.; Georghiades, C. N. (2008)
      This paper derives robust niiniinax estimators for a class of uncertain models. The uncertainty is described by a relative entropy constraint between the unknown joint distribution and a fixed nominal joint distribution. ...
    • Conference Object  

      A semantic approach of an adaptive and personalized Web-based learning content - The case of AdaptiveWeb 

      Germanakos, Panagiotis; Tsianos, Nikos; Lekkas, Zacharias; Mourlas, Constantinos; Belk, Marios; Samaras, George S. (2007)
      Adapting to user context, individual features and behaviour patterns is a topic of great attention nowadays in the field of Web-based and mobile learning. A challenge is to design personalized interfaces and software ...