Spyros G. Tzafestas

Veljko Potkonjak, Spyros G. Tzafestas, Miomir Vukobratovic, Milena Milojevic, Milos Jovanovic: Human-and-Humanoid Postures Under External Disturbances: Modeling, Simulation, and Robustness. Part 1: Modeling. Journal of Intelligent and Robotic Systems 63(2): 191-210 (2011)

Miomir Vukobratovic, Milena Milojevic, Spyros G. Tzafestas, Milos Jovanovic, Veljko Potkonjak: Human-and-Humanoid Postures Under External Disturbances: Modeling, Simulation, and Robustness. Part 2: Simulation and Robustness. Journal of Intelligent and Robotic Systems 63(2): 211-231 (2011)

Dimitris Aristos, Spyros G. Tzafestas: A Method for the Registration of a Known CAD Model into the Workspace Frame of a Robot. International Journal on Artificial Intelligence Tools 19(3): 281-304 (2010)

Spyros G. Tzafestas, K. M. Deliparaschos, George Moustris: Fuzzy logic path tracking control for autonomous non-holonomic mobile robots: Design of System on a Chip. Robotics and Autonomous Systems 58(8): 1017-1027 (2010)

George Moustris, Spyros G. Tzafestas: Reducing a class of polygonal path tracking to straight line tracking via nonlinear strip-wise affine transformation. Mathematics and Computers in Simulation 79(2): 133-148 (2008)

Spyros G. Tzafestas: The Art and Impact of Physical and Virtual Enterprise Incubators: The Greek Paradigm. WSKS (2) 2008: 549-559

Gerasimos G. Rigatos, Spyros G. Tzafestas: H_alpha tracking of uncertain SISO nonlinear systems: an observer-based adaptive fuzzy approach. Int. J. Systems Science 38(6): 459-472 (2007)

Honghai Liu, Spyros G. Tzafestas: Special Issue on Model Based Reasoning in Engineering and Robotic Systems. Journal of Intelligent and Robotic Systems 48(1): 5-6 (2007)

K. M. Deliparaschos, G. C. Doyamis, Spyros G. Tzafestas: A parameterized genetic algorithm ip core design and implementation. ICINCO-ICSO 2007: 417-423

Gerasimos G. Rigatos, Spyros G. Tzafestas: Quantum learning for neural associative memories. Fuzzy Sets and Systems 157(13): 1797-1813 (2006)

K. M. Deliparaschos, F. I. Nenedakis, Spyros G. Tzafestas: Design and Implementation of a Fast Digital Fuzzy Logic Controller Using FPGA Technology. Journal of Intelligent and Robotic Systems 45(1): 77-96 (2006)

Spyros G. Tzafestas: Genetic Programming Theory and Practice. Journal of Intelligent and Robotic Systems 45(1): 97-99 (2006)

Spyros G. Tzafestas: Staring at the Second Life Period of the Journal. Journal of Intelligent and Robotic Systems 46(4): 303 (2006)

Gerasimos G. Rigatos, Spyros G. Tzafestas: Neural Structures Using the Eigenstates of a Quantum Harmonic Oscillator. Open Syst. Inform. Dynam. 13(1): 27-42 (2006)

Gerasimos G. Rigatos, Spyros G. Tzafestas: Feed-Forward Neural Networks Using Hermite Polynomial Activation Functions. SETN 2006: 323-333

Srikanta Patnaik, Lakhmi C. Jain, Spyros G. Tzafestas, Germano Resconi, Amit Konar (Eds.): Innovations in Robot Mobility and Control. Studies in Computational Intelligence 8, Springer 2005, isbn 978-3-540-26892-5

George Moustris, Spyros G. Tzafestas: A Robust Fuzzy Logic Path Tracker for Non-holonomic Mobile Robots. International Journal on Artificial Intelligence Tools 14(6): 935-966 (2005)

Spyros G. Tzafestas: Sensor Integration and Fusion Techniques in Robotic Applications. Journal of Intelligent and Robotic Systems 43(1) (2005)

K. M. Deliparaschos, F. I. Nenedakis, Spyros G. Tzafestas: A fast digital fuzzy logic controller: FPGA design and implementation. ETFA 2005

Spyros G. Tzafestas: Editorial: Multiple and Distributed Cooperating Robots. Journal of Intelligent and Robotic Systems 39(1) (2004)

E. N. Skoundrianos, Spyros G. Tzafestas: Modelling and FDI of Dynamic Discrete Time Systems Using a MLP with a New Sigmoidal Activation Function. Journal of Intelligent and Robotic Systems 41(1): 19-36 (2004)

Miomir Vukobratovic, Veljko Potkonjak, Spyros G. Tzafestas: Human and Humanoid Dynamics. Journal of Intelligent and Robotic Systems 41(1): 65-84 (2004)

Gerasimos G. Rigatos, Spyros G. Tzafestas: Fuzzy Automata for Fault Diagnosis: A Syntactic Analysis Approach. SETN 2004: 301-310

Ioannis A. Pantazopoulos, Spyros G. Tzafestas: Optimizing the subdivision of elements in discontinuity meshing for hierarchical radiosity. International Journal on Artificial Intelligence Tools 12(4): 395-411 (2003)

Giorgos Apostolikas, Spyros G. Tzafestas: On-line RBFNN based identification of rapidly time-varying nonlinear systems with optimal structure-adaptation. Mathematics and Computers in Simulation 63(1): 1-13 (2003)

Konstantinos C. Zikidis, Spyros G. Tzafestas: ART-Based Neuro-fuzzy Modelling Applied to Reinforcement Learning. KES 2003: 22-29

M. A. Symeonaki, Giorgos B. Stamou, Spyros G. Tzafestas: Fuzzy Non-Homogeneous Markov Systems. Appl. Intell. 17(2): 203-214 (2002)

Spyros G. Tzafestas, Minos Kotsis, Triantafyllos Pimenides: Observer-Based Optimal Control of Flexible Stewart Parallel Robots. Journal of Intelligent and Robotic Systems 34(4): 489-503 (2002)

Ioannis Pantazopoulos, Spyros G. Tzafestas: Occlusion Culling Algorithms: A Comprehensive Survey. Journal of Intelligent and Robotic Systems 35(2): 123-156 (2002)

Veljko Potkonjak, Jelena Radojicic, Spyros G. Tzafestas: Modeling Robot "Psycho-Physical" State and Reactions - A New Option in Human-Robot Communication Part 1: Concept and Background. Journal of Intelligent and Robotic Systems 35(4): 339-352 (2002)

Veljko Potkonjak, Jelena Radojicic, Spyros G. Tzafestas, Dragan Kostic: Modeling Robot "Psycho-Physical" State and Reactions - A New Option in Human-Robot Communication Part 2: Modeling and Simulation. Journal of Intelligent and Robotic Systems 35(4): 353-364 (2002)

Spyros G. Tzafestas, M. P. Tzamtzi, Gerasimos G. Rigatos: Robust motion planning and control of mobile robots for collision avoidance in terrains with moving objects. Mathematics and Computers in Simulation 59(4): 279-292 (2002)

Spyros G. Tzafestas, Elpida Tzafestas: Intelligent forecasting, fault diagnosis, scheduling and control. Mathematics and Computers in Simulation 60(3-5): 145-147 (2002)

E. N. Skoundrianos, Spyros G. Tzafestas: Fault diagnosis via local neural networks. Mathematics and Computers in Simulation 60(3-5): 169-180 (2002)

Gerasimos G. Rigatos, Spyros G. Tzafestas: Parallelization of a fuzzy control algorithm using quantum computation. IEEE T. Fuzzy Systems 10(4): 451-460 (2002)

Spyros G. Tzafestas, Gerasimos G. Rigatos: Fuzzy reinforcement learning control for compliance tasks of robotic manipulators. IEEE Transactions on Systems, Man, and Cybernetics, Part B 32(1): 107-113 (2002)

Panagiotis G. Zavlangas, Spyros G. Tzafestas: Integration of Topological and Metric Maps for Indoor Mobile Robot Path Planning and Navigation. SETN 2002: 121-130

G. A. Vagelatos, Gerasimos G. Rigatos, Spyros G. Tzafestas: Incremental fuzzy supervisory controller design for optimizing the injection molding process. Expert Syst. Appl. 20(2): 207-216 (2001)

Giorgos B. Stamou, Spyros G. Tzafestas: Resolution of composite fuzzy relation equations based on Archimedean triangular norms. Fuzzy Sets and Systems 120(3): 395-407 (2001)

Spyros G. Tzafestas, Gerasimos G. Rigatos, G. A. Vagelatos: Design of fuzzy gain-scheduled robust controllers using Kharitonov's extremal gain margin theorem. Journal of Intelligent and Fuzzy Systems 10(1): 39-56 (2001)

Spyros G. Tzafestas, Elpida Tzafestas: Computational Intelligence Techniques for Short-Term Electric Load Forecasting. Journal of Intelligent and Robotic Systems 31(1-3): 7-68 (2001)

Spyros G. Tzafestas, Elpida Tzafestas: Human-Machine Interaction in Intelligent Robotic Systems: A Unifying Consideration with Implementation Examples. Journal of Intelligent and Robotic Systems 32(2): 119-141 (2001)

Spyros G. Tzafestas, Konstantinos C. Zikidis: NeuroFAST: on-line neuro-fuzzy ART-based structure and parameter learning TSK model. IEEE Transactions on Systems, Man, and Cybernetics, Part B 31(5): 797-802 (2001)

Konstantinos C. Zikidis, Spyros G. Tzafestas: Adaptive neuro-fuzzy modeling applied to policy gradient reinforcement learning. HERCMA 2001: 173-179

Spyros N. Raptis, Spyros G. Tzafestas, Hermione Karagianni: Optimal Genetic Representation of Complete Strictly-Layered Feedforward Neural Networks. IWANN (2) 2001: 127-135

Panagiotis G. Zavlangas, Spyros G. Tzafestas: Industrial Robot Navigation and Obstacle Avoidance Employing Fuzzy Logic. Journal of Intelligent and Robotic Systems 27(1-2): 85-97 (2000)

Spyros G. Tzafestas, Sotiris N. Raptis: Image Segmentation via Iterative Fuzzy Clustering Based on Local Space-Frequency Multi-Feature Coherence Criteria. Journal of Intelligent and Robotic Systems 28(1-2): 21-37 (2000)

Ioannis S. Pantazopoulos, Spyros G. Tzafestas: An Efficient Algorithm for Ray Tracing. Journal of Intelligent and Robotic Systems 28(1-2): 171-180 (2000)

Spyros G. Tzafestas: Handbook of Human-Computer Interaction, Martin G. Helander, Thomas K. Landauer and Prasad V. Prabhu (eds.). Journal of Intelligent and Robotic Systems 28(3): 291-292 (2000)

Spyros G. Tzafestas: Fuzzy Logic and Neural Network Handbook, C.H. Chen (ed.). Journal of Intelligent and Robotic Systems 28(3): 293-294 (2000)

Spyros G. Tzafestas: Handbook of Industrial Robotics, Shimon Y. Nof (ed.). Journal of Intelligent and Robotic Systems 28(3): 295-296 (2000)

Gerasimos G. Rigatos, Costas S. Tzafestas, Spyros G. Tzafestas: Mobile robot motion control in partially unknown environments using a sliding-mode fuzzy-logic controller. Robotics and Autonomous Systems 33(1): 1-11 (2000)

Spyros G. Tzafestas, Thanassis E. Krikochoritis, A. Melfi: Modeling and control of an omnidirectional mobile robot. Advanced Network Enterprises 2000: 391-402

Platon A. Prokopiou, Spyros G. Tzafestas, William S. Harwin: A Novel Scheme for Human-Friendly and Time-Delays Robust Neuropredictive Teleoperation. Journal of Intelligent and Robotic Systems 25(4): 311-340 (1999)

Spyros G. Tzafestas, Gerasimos G. Rigatos: A Simple Robust Sliding-Mode Fuzzy-Logic Controller of the Diagonal Type. Journal of Intelligent and Robotic Systems 26(3-4): 353-388 (1999)

Giorgos B. Stamou, Spyros G. Tzafestas: Fuzzy relation equations and fuzzy inference systems: an inside approach. IEEE Transactions on Systems, Man, and Cybernetics, Part B 29(6): 694-702 (1999)

Elpida Tzafestas, Spyros N. Raptis, Spyros G. Tzafestas: Multi-Agent Robot Architectures: The Decomposition Issue and a Case Study. International Journal on Artificial Intelligence Tools 7(2): 163-187 (1998)

Costas S. Tzafestas, Platon A. Prokopiou, Spyros G. Tzafestas: Path Planning and Control of a Cooperative Three-Robot System Manipulating Large Objects. Journal of Intelligent and Robotic Systems 22(2): 99-116 (1998)

Nikos I. Katevas, Spyros G. Tzafestas, Christos G. Pnevmatikatos: The Approximate Cell Decomposition with Local Node Refinement Global Path Planning Method: Path Nodes Refinement and Curve Parametric Interpolation. Journal of Intelligent and Robotic Systems 22(3-4): 289-314 (1998)

Keigo Watanabe, Yamato Shiraishi, Spyros G. Tzafestas, Jun Tang, Toshio Fukuda: Feedback Control of an Omnidirectional Autonomous Platform for Mobile Service Robots. Journal of Intelligent and Robotic Systems 22(3-4): 315-330 (1998)

Spyros G. Tzafestas, Gerasimos G. Rigatos: Neural and Neurofuzzy FELA Adaptive Robot Control Using Feedforward and Counterpropagation Networks. Journal of Intelligent and Robotic Systems 23(2-4): 291-330 (1998)

Spyros G. Tzafestas, Giorgos B. Stamou: A New Solution Methodology for Fuzzy Relation Equations. IEA/AIE (Vol. 1) 1998: 210-219

Spyros G. Tzafestas, Konstantinos C. Zikidis: A New On-Line Structure and Parameter Learning Architecture for Fuzzy Modeling, Based on Neural and Fuzzy Techniques. IEA/AIE (Vol. 2) 1998: 375-382

Spyros G. Tzafestas, Gerasimos G. Rigatos: A simple robust fuzzy-logic sliding-mode controller of the diagonal type. BASYS 1998: 499-512

Spyros G. Tzafestas: Editorial. Advanced Robotics 12(4): 313-315 (1997)

Nikos I. Katevas, Spyros G. Tzafestas: The active kinematic histogram method for path planning of non-point, non-holonomically constrainted mobile robots. Advanced Robotics 12(4): 373-395 (1997)

Spyros G. Tzafestas, Zhifang Ma: A Polynomial Function Discovery System - FFS. International Journal on Artificial Intelligence Tools 6(1): 1-13 (1997)

Spyros G. Tzafestas, Gerasimos G. Rigatos, E. J. Kyriannakis: Geometry and Thermal Regulation of GMA Welding via Conventional and Neural Adaptive Control. Journal of Intelligent and Robotic Systems 19(2): 153-186 (1997)

Spyros G. Tzafestas: Robot Adaptive and Robust Control. Journal of Intelligent and Robotic Systems 20(2-4): 87-91 (1997)

Spyros G. Tzafestas, Thanassis E. Krikochoritis, Costas S. Tzafestas: Robust Sliding-mode Control of Nine-link Biped Robot Walking. Journal of Intelligent and Robotic Systems 20(2-4): 375-402 (1997)

Spyros G. Tzafestas, Mark Raibert, Costas S. Tzafestas: Robust sliding-mode control applied to a 5-link biped robot. Journal of Intelligent and Robotic Systems 15(1): 67-133 (1996)

Spyros G. Tzafestas: Book reviews. Journal of Intelligent and Robotic Systems 15(4): 437-441 (1996)

Spyros G. Tzafestas: Neural fuzzy control systems with structure and parameter learning. Journal of Intelligent and Robotic Systems 17(4): 429-430 (1996)

Keigo Watanabe, Katsuhiro Hara, Shinji Koga, Spyros G. Tzafestas: Fuzzy-neural network controllers using mean-value-based functional reasoning. Neurocomputing 9(1): 39-61 (1995)

Spyros G. Tzafestas, Alekos Triantafyllakis, George Rizos: Scheduling dependent tasks on identical machines using a novel heuristic criterion: A robotic computation example. Journal of Intelligent and Robotic Systems 12(3): 229-237 (1995)

Anastasios Zagorianos, Spyros G. Tzafestas, George S. Stavrakakis: On line discrete-time control of industrial robots. Robotics and Autonomous Systems 14(4): 289-299 (1995)

Vesna Cvetkovic-Zivkovic, Spyros G. Tzafestas, Guna Seetharaman: Book reviews. Journal of Intelligent and Robotic Systems 9(1-2): 179-187 (1994)

Kimon P. Valavanis, Angelika I. Kokkinaki, Spyros G. Tzafestas: Knowledge-based (expert) systems in engineering applications: A survey. Journal of Intelligent and Robotic Systems 10(2): 113-145 (1994)

Fivos V. Hatzivasiliou, Spyros G. Tzafestas: Analysis and design of a new piezoresistive tactile sensor system for robotic applications. Journal of Intelligent and Robotic Systems 10(3): 243-256 (1994)

Spyros G. Tzafestas, Vesna Cvetkovic-Zivkovic, Rasiah Loganantharaj: Book reviews. Journal of Intelligent and Robotic Systems 10(3): 323-328 (1994)

George Kapsiotis, Spyros G. Tzafestas: Hierarchical control approach to a composite inventory-marketing problem. Journal of Intelligent and Robotic Systems 11(3): 293-309 (1994)

C. H. Chu, Spyros G. Tzafestas: Book reviews. Journal of Intelligent and Robotic Systems 11(3): 311-314 (1994)

Spyros G. Tzafestas, Leonidas Palios, F. Cholin: Diagnostic expert system inference engine based on the certainty factors model. Knowl.-Based Syst. 7(1): 17-26 (1994)

Keigo Watanabe, Spyros G. Tzafestas: Generalized pseudo-Bayes estimation and detection for abruptly changing systems. Journal of Intelligent and Robotic Systems 7(1): 95-112 (1993)

Spyros G. Tzafestas, George Kapsiotis: An Integrated Multi-Product Dynamic Production Planning Model. APMS 1993: 201-208

Spyros G. Tzafestas, A. Kanellakis, Nickolas J. Theodorou: Two-dimensional digital filters without overflow oscillations and instability due to finite word length. IEEE Transactions on Signal Processing 40(9): 2311-2317 (1992)

Keigo Watanabe, Toshio Fukuda, Spyros G. Tzafestas: An interative learning control scheme using the weighted least-squares method. Journal of Intelligent and Robotic Systems 4(3): 267-284 (1991)

Irena Jaworska, Spyros G. Tzafestas: Robust stability analysis of robot control systems. Robotics and Autonomous Systems 7(4): 285-290 (1991)

Keigo Watanabe, Spyros G. Tzafestas: A hierarchical multiple model adaptive control of discrete-time stochastic systems for sensor and actuator uncertainties. Automatica 26(5): 875-886 (1990)

Spyros G. Tzafestas, Aristides Elianos, C. Botsaris: Book reviews. Journal of Intelligent and Robotic Systems 3(1): 87-90 (1990)

Keigo Watanabe, Spyros G. Tzafestas: Learning algorithms for neural networks with the Kalman filters. Journal of Intelligent and Robotic Systems 3(4): 305-319 (1990)

Spyros G. Tzafestas, Nikos Theodorou, Kimon P. Valavanis, Fivos Hatzivassiliou: Book reviews. Journal of Intelligent and Robotic Systems 3(4): 393-397 (1990)

Spyros G. Tzafestas: xx + 236 ppHugh F. Durrant-Whyte, Integration, coordination and control of multisensor robot systems, Kluwer Academic Publishers (1988). Robotics and Autonomous Systems 6(3): 315 (1990)

Spyros G. Tzafestas, Antoni Ligeza: A framework for knowledge-based control. Journal of Intelligent and Robotic Systems 1(4): 407-425 (1989)

Spyros G. Tzafestas: Foreword. Journal of Intelligent and Robotic Systems 2(2-3): 95 (1989)

Spyros G. Tzafestas: Book review. Journal of Intelligent and Robotic Systems 1(1): 89-93 (1988)

Spyros G. Tzafestas, George S. Stavrakakis, Anastasios Zagorianos: Robot model reference adaptive control through lower/upper part dynamic decoupling. Journal of Intelligent and Robotic Systems 1(2): 163-184 (1988)

Spyros G. Tzafestas: Book reviews. Journal of Intelligent and Robotic Systems 1(2): 203-206 (1988)

Spyros G. Tzafestas, N. Chrysochoides: On the Multivariable Control of Nuclear Reactors Using the State Feedback Approach. Optimization Techniques 1975: 250-267

Spyros G. Tzafestas: State Estimation Algorithms for Non-Linar Stochastic Sequential Machines. Comput. J. 16(3): 245-253 (1973)

Spyros G. Tzafestas: Input-Output Modeling and Identification of Linear Automata. Inf. Process. Lett. 1(3): 69-75 (1972)

Spyros G. Tzafestas: Design Parameters for a Multiserver Processing Buffering System with Feedback. Inf. Process. Lett. 1(6): 236-243 (1972)

Spyros G. Tzafestas, D. Efthymiatos: A Fast Computational Algorithm for Optimum Digital Control Systems. IFIP Congress (2) 1971: 1328-1334