[C34] __G.A. Papakostas,__ E.I. Papageorgiou and V.G. Kaburlasos, “**Linguistic Fuzzy Cognitive Map (LFCM) for Pattern Recognition**”, *IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2015)*, pp. 1-7, 2-5 August, Istanbul – Turkey, 2015.

[C33] __G.A. Papakostas__ and K.I. Diamantaras, “**Efficient Data Classification by GPU-Accelerated Linear Mean Squared Slack Minimization**”, *IEEE International Workshop on Machine Learning for Signal Processing (MLSP 2014)*, pp., 21-24 September, Reims-France, 2014.

[C32] G.A. Papakostas and V.G. Kaburlasos, “**Lattice Computing (LC) Meta-representation for Pattern Classification**”, *IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2014)*, pp. 39-44, 6-11 July, Beijing – China, 2014.

[C31] E.D. Tsougenis, G.A. Papakostas, D.E. Koulouriotis, E.G. Karakasis and D.A. Karras, “**Color Image Watermarking via Quaternion Radial Tchebichef Moments**”, *IEEE International Workshop on Imaging Systems and Techniques (IST’13)*, pp. 101-105, 22-23 October, Beijing – China, 2013.

[C30] V.G. Kaburlasos, G.A. Papakostas, Th. Pachidis and A. Athinellis, “**Intervals’ Numbers (INs) Interpolation/Extrapolation**”, *IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2013)*, pp. 1-8, 7-10 July, Hyderabad – India, 2013.

[C29] G.A. Papakostas, V.G. Kaburlasos and Th. Pachidis, “**Thermal Infrared Face Recognition Based on Lattice Computing (LC) Techniques**”, *IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2013)*, pp. 1-6, 7-10 July, Hyderabad – India, 2013.

[C28] K.M. Hosny, G.A. Papakostas and D.E. Koulouriotis, “**Accurate Reconstruction of Noisy Medical Images Using Orthogonal Moments**”, *Proceedings of the 18th International Conference on Digital Signal Processing (DSP’13*), pp. 1-6, 1-3 July, Santorini – Greece, 2013.

[C27] E.D. Tsougenis, G.A. Papakostas and D.E. Koulouriotis, “**Introducing the Separable Moments for Image Watermarking in a Tottaly Moment-Oriented Framework**”, *Proceedings of the 18th International Conference on Digital Signal Processing (DSP’13*), pp. 1-6, 1-3 July, Santorini – Greece, 2013.

[C26] A.G. Hatzimichailidis, G.A. Papakostas and V.G. Kaburlasos, “**A Study on D-Implications**”, *Proceedings of the 10th International FLINS Conference on Uncertainty Modeling in Knowledge Engineering and Decision Making (FLINS 2012)*, pp. 708-713, 26-29 August 2012, Istanbul, Turkey.

[C25] S.E. Papadakis, V.G. Kaburlasos and G.A. Papakostas, “**Fuzzy lattice reasoning (FLR) classifier for human facial expression recognition**”, *Proceedings of the 10th International FLINS Conference on Uncertainty Modeling in Knowledge Engineering and Decision Making (FLINS 2012)*, pp. 633-638, 26-29 August 2012, Istanbul, Turkey.

[C24] E.D. Tsougenis, G.A. Papakostas, D.E. Koulouriotis and V.D. Tourassis, “**Image Watermarking in Polar Harmonic Transforms Domain**“, *Proceedings of the 19th International Workshop on Systems, Signals and Image Processing (IWSSIP’12*), ISBN 978-3-200-02588-2, 11-13 April, Vienna – Austria, 2012.

[C23] M.K. Ketipi, D.E. Koulouriotis, E.G. Karakasis, G.A. Papakostas and V.D. Tourassis, “**Nonlinear Cause-Effect Relationships in Fuzzy Cognitive Maps**”, *IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2011)*, pp. 836-843, 27-30 June, 2011, Taipei-Taiwan.

[C22] G.A. Papakostas, A.S. Polydoros, D.E. Koulouriotis and V.D. Tourassis, “**Training Fuzzy Cognitive Maps by Using Hebbian Learning Algorithms: A Comparative Study**”,* IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2011)*, pp. 851-858, 27-30 June, 2011, Taipei-Taiwan.

[C21] G.A. Papakostas, D.A. Karras, B.G. Mertzios, D. Graveron-Demilly and D.van Ormondt, “**A ****Constrained ****Genetic ****Algorithm ****with ****Adaptively ****Defined ****Fitness ****Function ****in ****MRS ****Quantification**”, *International Conference on Grid and Distributed Computing, Control and Automation*,* (CGD/CA’10)*,pp. 257-268, 13-15 December 2010, Jeju Island – Korea.

[C20] G.A. Papakostas, D.A. Karras, B.G. Mertzios, D.van Ormondt and D. Graveron-Demilly, “**On ****Quantifying ****MRS ****Metabolites ****Using ****a ****Constrained ****Genetic ****Algorithm**”, *IEEE International Workshop on Imaging Systems and Techniques (IST’10)*,pp. 46-51, 1-2 July 2010, Thessaloniki – Greece.

[C19] G.A. Papakostas, E.D. Tsougenis and D.E. Koulouriotis, “**Near Optimum Local Image Watermarking Using Krawtchouk Moments**”, *IEEE International Workshop on Imaging Systems and Techniques (IST’10)*,pp. 464-467, 1-2 July 2010, Thessaloniki – Greece.

[C18] G.A. Papakostas, E.G. Karakasis and D.E. Koulouriotis, “**Computing Orthogonal Moments in Biomedical Imaging**”, pp. 1-4, *16 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’09)*, 18-20 June 2009, Chalkida – Greece.

[C17] G.A. Papakostas, D.A. Karras and B.G. Mertzios, “**Performance of the Orthogonal Moments in Reconstructing Biomedical Images**”, pp. 1-4, *16 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’09)*, 18-20 June 2009, Chalkida – Greece.

[C16] G.A. Papakostas, D.A. Karras and B.G. Mertzios, “**Dealing with Peaks Overlapping Issue in Quantifying Human Brain Metabolites of MRSI**”, *IEEE International Workshop on Imaging Systems and Techniques (IST’09)*,pp. 58-62, 11-12 May 2009, Shenzhen – China.

[C15] G.A. Papakostas, E.G. Karakasis and D.E. Koulouriotis, “**On Accelerating the Computation of 2-D Discrete Cosine Transform in Image Processing**”, *International Conference on Signals and Electronic Systems (ICSES’08)*, pp. 7-10, 14-17 September 2008, Krakow – Poland.

[C14] G.A. Papakostas, D.A. Karras, B.G. Mertzios and Y.S. Boutalis, “**An Efficient Invariant Image Recognition Methodology Using Wavelet Compressed Zernike Moments**** Denoised Through Self Organizing Maps**”, *IEEE International Workshop on Imaging Systems and Techniques (IST’07)*,pp. 1-6, 4-5 May 2007, Krakow – Poland.

[C13] G.A. Papakostas, Y.S. Boutalis, D.A. Karras and B.G. Mertzios, “**Highly Compressed Zernike Moments by Smoothing**”* 14 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’07)*, pp. 213-216, 27-30 June 2007, Maribor – Slovenia.

[C12] G.A. Papakostas, Y.S. Boutalis, D.A. Karras and B.G. Mertzios, “**Fast Computation of Orthogonal Fourier-Mellin Moments Using Modified Direct Method**”,* 14 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’07)*, pp. 161-164, 27-30 June 2007, Maribor – Slovenia.

[C11] G.A. Papakostas, E.G. Karakasis and D.E. Koulouriotis, “**Exact and Speedy Computation of Legendre Moments on Binary Images**”, *8 ^{th} International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS’07)*, p.48, 6-8 June 2007, Santorini – Greece.

[C10] G.A. Papakostas, Y.S. Boutalis, D.E. Koulouriotis and B.G. Mertzios, “**A First Study of Pattern Recognition by Using Fuzzy Cognitive Maps**”, *13 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’06)*, pp. 369-374, 21-23 September 2006, Budapest – Hungary.

[C9] G.A. Papakostas, Y.S. Boutalis, D.A. Karras and B.G. Mertzios, “**Efficient Computation of Orthogonal Moments by Suppressing the Factorial Terms**”, *IEEE International Workshop on Imaging Systems and Techniques (IST’06)*, pp. 23-27, 29 April 2006, Minory – Italy.

[C8] G.A. Papakostas, Y.S. Boutalis, S.T. Samartzidis, D.A. Karras and B.G. Mertzios, “**Combining Backpropagation and Genetic Algorithms to Train Neural Networks**”, *12 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’05)*, pp. 171-177, 22-24 September 2005, Chalkida – Greece.(download)

[C7] G.A. Papakostas, Y.S. Boutalis, D.A. Karras and B.G. Mertzios, “**An**** Exploration Measure of the Diversity Variation in Genetic Algorithms**”, *2** ^{nd} International Conference on Informatics in Control, Automation and Robotics (ICINCO’05)*, pp. 260-265, 14-17 September, Barcelona – Spain.(download)

[C6] G.A. Papakostas, Y.S. Boutalis, D.A. Karras, and B.G. Mertzios, “**On the Reconstruction Performance of Compressed Orthogonal Moments**”, *1 ^{st} International Conference on Informatics in Control, Automation and Robotics (ICINCO’04)*, pp. 468-474, 25-28 August 2004, Setubal – Portugal.(download)

[C5] G.A. Papakostas, O.I. Kosmidou and I.E. Antonakis, “**An LMI-Based Genetic Algorithm for Guaranteed Cost Control**”,* 1 ^{st} International Conference on Informatics in Control, Automation and Robotics (ICINCO’04)*, pp. 327-333, 25-28 August 2004, Setubal – Portugal.(download)

[C4] M. Dasygenis, E. Brockmeyer, D. Soudris, F. Catthoor, A. Thanailakis and G. Papakostas, “**Performance and Energy Optimization of Multimedia Applications Using DMA Combined with Prefetch**”, *Workshop on Compilers and Operating Systems for Low Power (COLP’03)*, 27 September 2003, New Orleans, Louisiana – USA.(download)

[C3] G.A. Papakostas, Y.S. Boutalis and B.G. Mertzios, “**Evolutionary Selection of Zernike Moment Sets In Image Processing**”, *10 ^{th} International Workshop on Systems, Signals and Image Processing (IWSSIP’03)*, 10-11 September 2003, Prague – Czech Republic.(download)

[C2] G.A. Papakostas, D.A. Karras and B.G. Mertzios, “**Image Coding Using a Wavelet Based Zernike Moments Compression Technique**”, *14th International Conference on Digital Signal Processing (DSP2002)*, vol. II, pp. 517-520, 1-3 July 2002, Santorini-Hellas (Greece).(download)

[C1] O.I. Kosmidou, G.A. Papakostas and G.D. Tampakis, “**Robust Multiple Objective Control by Using LMI Optimization**”, *European Control Conference (ECC2001)*, pp. 713-716, 4-7 September 2001, Porto-Portugal.(download)