# Publications in International Conferences

- C. Chatzichristos, L. Kofidis, S. Theodoridis “PARAFACA2 and its block term analog for blind fMRI source unmixing”, European Signal processing Conference, EUSIPCO, Kws, Greece, 2017.
- M. Morante, Y. Kopsinis, E. Kofidis, C. Chatzichristos, S. Theodoridis “Assisted dictionary learning for fMRI data analysis”, International Conference on Acoustics, Speech and Signal Processing (ICASSP), New Orleans 2017.
- C. Chatzichristos, E. Kofidis, Y. Kopsinis , M. Morante Moreno, S. Theodoridis “Higher-Order Block Term Decomposition for Spatially Folded fMRI Data”, 13th Intl. Conf, on Latent Variable Analysis and Signal Separation (LVA/ICA), Grenoble, France, 2017.
- D. Ampeliotis, C. Mavrokefalidis, K. Berberidis, S. Theodoridis “Adapt-align-combine for diffusion-based distributed dictionary learning”, European Signal Processing Conference, EUSIPCO, Budapest, Hungary, 2016.
- S. Chouvardas, Y. Kopsinis, S. Theodoridis, “An online algorithm for distributed dictionary learning”, International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, 2015.
- Kopsinis Y., Chouvardas S., Theodoridis S. “Distributed robust subspace tracking,” European Signal processing Conference (EUSIPCO), Nice, France, 2015.
- Papgeorgiou G., Bouboulis P., Theodoridis S., “Robust regression in RKHS-An overview,” European Signal processing Conference (EUSIPCO), Nice France, 2015.
- Y. Kopsinis, S. Chouvardas, S. Theodoridis, “Iterative randomized robust linear regression”, International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, 2015.
- A. Pikrakis, Y. Kopsinis, S. Chouvardas, S. Theodoridis, “ Pattern classification formulated as a missing data task: The audio genre classification case”, International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, 2015.
- S. Chouvardas, M. Mouma, S. Theodoridis, A. Zoubir “Distributed robust labeling of audio scenes in heterogeneous wireless sensor networks”, International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brisbane Australia, 2015.
- A. Pikrakis, S. Theodoridis “Speech-music discrimination: A deep learning perspective.” in Euorpean Signal processing Conference (EUSIPCO), Lisbon, Portugal, 2014.
- P. Bouboulis, G Papageorgiou, S. Theodoridis, “Image denoising in RKHS via orthogonal matching pursuit,” Inl. Conference on Cognitive Information Processing (CIP), Copenghagen Denmark, 2104.
- G. Papageorgiou, P. Bouboulis, S. Theodoridis, “Robust linear regression analysis: The greedy way,” in Euorpean Signal processing Conference (EUSIPCO), Lisbon, Portugal, 2014.
- Y. Kopsinis, H. Georgiou, S. Theodoridis, “fMRI unmixing via properly adjusted dictionary learning,” in European Signal processing Conference (EUSIPCO), Lisbon, Portugal, 2014.
- S. Chouvardas, Y. Kopsinis, S. Theodoridis. "An Adaptive Projected Subgradient based Algorithm for Robust Subspace Tracking" In Proc. International Conference on Acoustics Speece and Signal Processing, ICASSP, Florence: Italy, May 4-9, 2014.
- K. Slavakis, Y. Kopsinis, S. Theodoridis, "New operators for fixed-point theory: The sparsity-aware learning case" In Proc. of European Signal Processing Conference, EUSIPCO (special session "Advances in set theoretic estimation and convex analysis for machine learning and signal processing tasks"), Marrakech, Morocco, Sept. 9-13, 2013.
- K. Slavakis, Y. Kopsinis, S. Theodoridis, G. B. Giannakis, and V. Kekatos. "Generalized iterative thresholding for sparsity-aware online Volterra system identification," In Proc. of International Symposium on Wireless Communication Systems (ISWCS), Ilmenau: Germany, Aug. 27-30, 2013.
- S. Theodoridis, Y. Kopsinis, K. Slavakis, and S. Chouvardas, "Sparsity-aware adaptive learning: A set theoretic estimation approach", In Proc. of IFAC International Workshop on Adaptation and Learning in Control and Signal Processing (ALCOSP), Caen: France, July 3-5, 2013.
- Y. Kopsinis, K. Slavakis, S. Theodoridis, and S. McLaughlin, "Thresholding-based sparsity-promoting online algorithms of low complexity," In Proc. of International Workshop on Circuits and Systems, ISCAS, Beijing, China, May 19-23, 2013.
- P. Bouboulis, S. Theodoridis, "Complex Support Vector Machines For Quaternary Classification," IEEE Intl. Workshop on Machine Learning for Signal Processing, MLSP,, September 22 - 25, Southampton, United Kingdom, 2013.
- S. Chouvardas, G. Mileounis, N. Kalouptsidis, S. Theodoridis "Training-Based and Blind Algorithms for Sparsity-Aware Distributed Learning" (Special Session on Distributed Algorithms) In Proceedings of the European Signal Processing Conference (EUSIPCO), 2013.
- S. Chouvardas, G. Mileounis, N. Kalouptsidis, S. Theodoridis. A greedy sparsity--promoting LMS for distributed adaptive learning in diffusion networks. In Proc. of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2013.
- G. Papageorgiou, P. Bouboulis, S. Theodoridis, Robust Kernel-Based Regression Using Orthogonal Matching Pursuit, IEEE Intl. Workshop on Machine Learning for Signal Processing., MLSP, September 22 - 25, Southampton, United Kingdom, 2013.
- C. Mavrokefalidis, E. Kofidis, A.A. Rontogiannis, S. Theodoridis, "Estimation in OFDM/OQAM Cooperative Systems", In proceedings of the 10th International Symposium on Wireless Communication Systems (ISWCS), Ilmenau, Germany, Aug. 2013.
- C. Mavrokefalidis, E. Kofidis, A.A. Rontogiannis, S. Theodoridis, "Optimal Training Design for Channel Estimation in OFDM/OQAM Cooperative Systems", In proceedings of the IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Darmstadt, Germany, June 2013.
- S. Chouvardas, K. Slavakis, Y. Kopsinis, S. Theodoridis "Sparsity-promoting adaptive algorithm for distributed learning in diffusion networks", Proceedings European Signal Processing Conference (EUSIPCO), Bucharest: Romania, Aug. 27-31, 2012.
- D. Katselis, E. Kofidis, S. Theodoridis "On OFDM/OQAM receivers," 20th European Signal Processing Conf. (EUSIPCO-2012)," Bucharest, Romania, Aug. 27-31, 2012.
- P. Bouboulis, S. Theodoridis, Ch. Mavroforakis "Complex Support Vector Regression," 3nd Intl. Workshop on Cognitive Information Processing (CIP -2012), May 28 - 30, Parador de Baiona, Spain, 2012.
- Y. Kopsinis, K. Slavakis, S. Theodoridis, S. McLaughlin "Generalized thresholding sparsity-aware algorithm for low complexity online learning", Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 3277-3280, Kyoto: Japan, March 25-30, 2012.
- K. Slavakis, Y. Kopsinis, and S. Theodoridis "Robust adaptive sparse system identification by using weighted l1 balls and Moreau envelopes," Proceedings of the European Signal Processing Conference (EUSIPCO), Barcelona: Spain, Aug. 29 - Sept. 2, 2011, (presented in the Special Session "Sparsity aware processing: theory and applications").
- P. Bouboulis, S. Theodoridis, M. Mavroforakis, Widely Linear Kernel-based Adaptive Filters, EUSIPCO 2011, August 29 - September 2, Barcelona, Spain.
- Y. Kopsinis, K. Slavakis, S. Theodoridis, S. McLaughlin "Reduced complexity online sparse signal reconstruction using projections onto weighted l1 balls," Proceedings of the International Conference on Digital Signal Processing (DSP), Special Session "Sparsity-aware signal processing", Corfu: Greece, July 6-8, 2011.
- K. Slavakis, Y. Kopsinis, S. Theodoridis "Revisiting adaptive least-squares estimation and application to online sparse signal recovery." Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 4292-4295, Prague: Czech Republic, May 22-27, 2011.
- S. Chouvardas, K. Slavakis, S. Theodoridis "Trading off communications bandwidth with accuracy in adaptive diffusion networks," Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 2048-2051, Prague: Czech Republic, May 22-27, 2011.
- P. Bouboulis, S. Theodoridis "The complex Gaussian kernel LMS algorithm", 20th International Conference on Artificial Neural Networks, ICANN, Thessaloniki, Greece, 2010.
- P. Bouboulis, S. Theodoridis, K. Slavakis "Edge preserving image denoising in Reproducing Kernel Hilbert Spaces", Proceedings of the 20th International Conference on Pattern Recognition, Istanbul: Turkey, 23-26 August 2010. (BEST Scientific Paper Award)
- T. Giannakopoulos, A. Pikrakis, S. Theodoridis "A Multimodal Approach to Violence Detection in Video Sharing Sites", International Conference on Pattern Recognition, ICPR, Istanbul, Turkey, 2010.
- S. Chouvardas, K. Slavakis, S. Theodoridis "A novel adaptive algorithm for diffusion networks using projections on hyperslabs", Intl. Workshop on Cognitive Information Processing, CIP, Elba, Italy, 2010. (Best Student paper Award.)
- K. Slavakis, S. Theodoridis, I. Yamada "Low complexity projection-based adaptive algorithm for sparse system identification and signal reconstruction," Proceedings of the Asilomar Conference on Signals, Systems, and Computers (Special Session) Pacific Grove, California: USA, November 7-10, 2010.
- P. Bouboulis, S. Theodoridis "Extension of Wirtinger Calculus in RKH spaces and the Complex Kernel LMS", IEEE International Workshop on Machine Learning for Signal Processing 2010 (MLSP 2010), August 29 - September 1, 2010 Kittila, Finland, 2010.
- K. Slavakis, Y. Kopsinis, S. Theodoridis "Adaptive algorithm for sparse system identification using projections onto weighted l1 balls", IEEE Intl. Conference on Acoustics Speech and Signal Processing, ICASSP, Dallas, 2010.
- Theodoros Giannakopoulos, Stavros Perantonis, Dimitrios Kosmopoulos, Alexandros Makris, Sergios Theodoridis "Audio-visual fusion for detecting violent scenes in videos", SETN-2010, Athens, Greece, 2010.
- C. Rizogiannis, E Kofidis, A. Rontogiannis, S. Thoeodoridis "Adaptive BLAST-type decision feedback equalizers for DS-CDMA systems", IEEE Conference on Communication Systems, ICCS, Singapore, 2010.
- S. Tzikopoulos, H Georgiou, M. Mavroforakis, S. Theodoridis "Shape-Based Tumor Retrieval in Mammograms Using Relevance-Feedback Techniques", 20th International Conference on Artificial Neural Networks, ICANN, Thessaloniki, Greece, 2010.
- K. Slavakis, P. Bouboulis, S. Theodoridis, "On line kernel receiver for multi-access MIMO channels", 20th IEEE Int'l Workshop on Signal Processing Advances in Wireless Communications (SPAWC-2009), Perugia, 2009.
- T. Gianakopoulos, A. Pikarkis, S. Theodoridis "A dimensional approach to emotion recognition of speech from movies", IEEE Intl. Conference on Acoustics Speech and Signal Processing, ICASSP, Taiwan, 2009.
- S. Tzikopoulos, H. Georgiou, M. Mavroforakis, S. Theodoridis , "A fully automated scheme for breast density estimation and asymmetry detection of mammograms",17th European Signal Processing Conference (EUSIPCO), Glasgow, Scotland, 2009.
- S. Tzikopoulos, H. Georgiou, M. Mavroforakis, N. Dimitropoulos, S. Theodoridis , "A fully automated complete segmentation scheme for mammograms", 16th International Conference on Digital Signal Processing (DSP), Santorini, Greece, 2009.
- K. Slavakis, S. Theodoridis "Robust adaptive nonlinear beamforming by kernels and projection mappings", European Signal Processing Conference (EUSIPCO), Lausanne, 2008.
- T. Giannakopoulos, A. Pikrakis, S. Theodoridis "Music Tracking in Audio Streams from Movies", IEEE International Workshop on Multimedia Signal Processing, 2008.
- T. Giannakopoulos, A. Pikrakis, S. Theodoridis "A Novel Efficient Approach for Audio Segmentation", 19th International Conference on Pattern Recognition (ICPR), Florida, 2008.
- K. Slavakis, S. Theodoridis "Constrained Adaptive Learning in Reproducing Kernel Hilbert Spaces: the Beamforming Paradigm", IEEE Workshop on Machine Learning for Signal Processing (MLSP), Cancun, Mexico, 2008.
- A. Pikrakis, T. Giannakopoulos, S. Theodoridis "Gunshot detection in audio streams from movies by means of dynamic programming and Bayesian networks", IEEE Intl. Conference on Acoustics Speech and Signal Processing, ICASSP, Las Vegas, 2008.
- K. Slavakis, S. Theodoridis "A generalized kernel affine projection algorithm using convex optimization", IEEE Intl. Symposium on Circuits and Systems, ISCAS, Sheattle, 2008.
- T. Perperis, S. Tsekeridou, S. Theodoridis, "An Ontological Approach to Semantic Video Analysis for Violence Identification", Multimedia Metadata Applications (M3A) Workshop, Innovations Conference for Knowledge Management, New Media Technologies and Semantic Technologies (Triple-i: i-Know, i-Semantics, i-Media),Graz, Austria, 5-7, September 2007 (Best Paper Award).
- A. Makris, D. Kosmopoulos, S. Perantonis, S.Theodoridis: "Hierarchical feature fusion for visual tracking", IEEE International Conference On Image Processing, ICIP, September 2007, San Antonio.
- K. Slavakis, S. Theodoridis, I. Yamada, "Online sparse kernel-based classification by projections", IEEE Workshop on Machine Learning for Signal Processing, Thessaloniki, Greece, 2007.
- D. Katselis, E. Kofidis, S. Theodoridis "Training-Based Estimation of Correlated MIMO Fading Channels in Interference-Limited Environments" IEEE Intl. Symposium on Circuits and Systems, ISCAS, New Orleans, 2007.
- D. Katselis, E. Kofidis, S. Theodoridis "A low-cost approach to training-based MIMO channel estimation in interference-limited environments", 18th IEEE Int'l Workshop on Signal Processing Advances in Wireless Communications (SPAWC-2007), June 2007, Helsinki, Finland.
- K. Slavakis, S. Theodoridis, I. Yamada, "Online kernel-based classification by projections" IEEE Intl. Conference on Acoustics Speech and Signal Processing, ICASSP, Hawaii, 2007.
- I. Antonopoulos, A. Pikrakis, S. Theodoridis, "Locating Rhythmic Patterns in Music Recordings Using Hidden Markov Models", IEEE Intl. Conference on Acoustics Speech and Signal Processing, ICASSP, Hawaii, 2007.
- I. Antonopoulos, A. Pikrakis, S. Theodoridis, O. Cornelis, D. Moelands, M Leman, "Music retrieval by rhythmic similarity applied to Greek and African traditional music," Proceedings of the 2007 International Conference on Music Information Retrieval and Related Activities (ISMIR 2007) Vienna, Austria, 2007.
- A. Pikrakis, S. Theodoridis "An application of Empirical Mode Decomposition on tempo induction form music information retrieval," Proceedings of the 2007 International Conference on Music Information Retrieval and Related Activities (ISMIR 2007), Vienna, Austria, 2007.
- T. Giannakopoulos, A. Pikrakis, S. Theodoridis, "A multiclass audio classification method with respect to violent content in movies using Baeysian networks," IEEE Workshop on Multimedia and Signal Processing, Crete, 2007. (Best Student paper Award).
- F. Fourli-Kartsouni, K. Slavakis, G. Kouroupetroglou, and S. Theodoridis: "A Bayesian Network Approach to Semantic Labelling of Text Formatting in XML Corpora of Documents", Lecture Notes in Computer Science (LNCS), Vol. 4556, pp. 299-308, 2007.
- R. Longo, D. Cavouras, C. Esbrand, I. Evangelou, A. Fant, P. Gasiorek, H. Georgiou, G. Hall, J. Jones, J. Leaver, J. Griffiths, D. Machin, N. Manthos, M. Metaxas, M. Noy, J.M. Østby, F. Psomadellis, T. Rokvic, G. Royle, H. Schulerud, R. Speller, P.F. van der Stelt, S. Theodoridis, F. Triantis, R. Turchetta, C. Venanzi "A Scanning System For Intelligent Imaging: I-ImaS", SPIE Medical Imaging Conference record, February 2007.
- A. Pikrakis, T. Giannakopoulos and S. Theodoridis, "A computationally efficient speech/music discriminator for radio recordings", Proceedings of the 2006 International Conference on Music Information Retrieval and Related Activities (ISMIR 2006), 8-12 October 2006, Victoria, BC (Canada).
- C. Rizogiannis, E. Kofidis, C. B. Papadias, and S. Theodoridis, "Semi-blind maximum likelihood joint channel estimation / data detection for MIMO fading channels," 17th IEEE Int'l Workshop on Signal Processing Advances in Wireless Communications (SPAWC-2006), July 2006, Cannes, France.
- T. Giannakopoulos, A. Pikrakis, S. Theodoridis "A speech-music discriminator for radio recordings using Bayesian networks", Proceedings of Intl. Conference on Acoustics Speech and Signal Processing, (ICASSP-2006), Vol. V, pp. 809-812, Toulouse, France, 2006.
- A. Pikrakis, T. Giannakopoulos, S. Theodoridis "Speech-music discrimination for radio broadcasting using a hybrid HMM-Bayesian network architecture," Proceedings of the XIII European Signal Processing Conferencee (EUSIPCO-2006), Florence , Italy, 2006.
- M. Mavroforakis, M. Sdralis, S. Theodoridis "A novel SVM geometric algorithm based on reduced convex hulls," Proceedings Intl. Conference on Pattern Recognition (ICPR2006), Hong Kong, 2006.
- H. Georgiou, M. Mavroforakis, S. Theodoridis " A game theoretic approach to weighted majority for combining SVM classifiers," Proceedings of the Intl. Conference on Neural networks ICANN, Eds. S. Kolias , et.al., Part I, pp. 284-292, LNCS 4131, Athens, Greece, 2006.
- J.A. Griffiths, C. Venanzi, R.D. Speller, G.J. Royle, M.G. Metaxas, C. Esbrand, P.F. van der Stelt, G. Li, H. Verheij, R. Turchetta, A. Fant, P. Gasiorek, S. Theodoridis, H. Georgiou, D. Cavouras, G. Hall, M. Noy, J. Jones, J. Leaver, D. Machin, S. Greenwood, M. Khaleeq, J. Ostby, H. Schulerud, F. Triantis, A. Asimakis, D. Bolanakis, N. Manthos, R. Longo, A. Bergamaschi, "Multi-Element Detector System for Intelligent Imaging: I-ImaS", IEEE Nuclear Science Symposium & Medical Imaging Conference record, 2006.
- R. Longo, C. Venanzi, A. Bergamaschi, H. Georgiou, S. Theodoridis, H. Schulerud, J. Østby, R.D. Speller, G.J. Royle, J.A. Griffiths, M.G. Metaxas, P.F. van der Stelt, G. Li, F. Psomadellis, R. Turchetta, A. Fant, G. Hall, M. Noy, J. Jones, J. Leaver, D. Machin, F. Triantis, A. Asimidis, D. Bolankis, "Intelligent Imaging Sensors: System development and preliminary results", Proceedings of International Workshop on Digital Mammography, 2006. Preliminary Results From The I-ImaS Project
- J.A. Griffiths, R.D. Speller, G.J. Royle, M.G. Metaxas, P.F. van der Stelt, G. Li, F. Psomadellis, K. Giannakakis, D. Zachariadis, R. Turchetta, A. Fant, P. Gasiorek, S. Theodoridis, H. Georgiou, D. Cavouras, T. Giannakopoulos, G. Hall, M. Noy, J. Jones, J. Leaver, D. Machin, J. Østby, H. Schulerud, F. Triantis, A. Asimidis, D. Bolanakis, N. Manthos, R. Longo, C. Venanzi "Preliminary Results From The I-ImaS Project", Proceedings of UK Radiological Congress, BJR Congress Series, 2006.
- M. Mavroforakis, S. Theodoridis "Support Vector Machine classification through geometry" Proceedings of the XII European Signal Processing Conference (EUSIPCO2005), Antalya, Turkey, Sep. 2005. (Best Student Paper Award)
- A. Pikrakis, S. Theodoridis Α., D. Kamarotos, "Melody spotting in raw audio recordings using variable duration Hidden Markov Models", Proceedings of the ΧΙIΙ European Signal Processing Conference (EUSIPCO2005), Antalya, Turkey, Sep. 2005
- A. Pikrakis, S. Theodoridis "A novel HMM approach to melody spotting in raw audio recordings", International Conferences on Music Information Retrieval (ISMIR), 2005.
- A. Pikrakis, I. Antonopoulos, S. Theodoridiis, " Music meter and tempo tracking from raw polyphonic audio", International Conferences on Music Information Retrieval (ISMIR), 2004.
- Y. Kopsinis, S. Theodoridis, E. Kofidis "An efficient low complexity clustering based MLSE equalizer for frequency selective channels", EUSIPCO-04, Vienna 2004.
- E. Kofidis, Y. Kopsinis, S. Theodoridis, "On the LS performance of a novel efficient center estimation method for cluster based MLSE equalizer, EUSIPCO-2004, Vienna 2004.
- A. Pikrakis, S. Theodoridis, D. Kamarotos "Classification of musical patterns using variable duration HMM", EUSIPCO-2004, Vienna, 2004.
- A. Galbiati, M.G. Metaxas, B.S. Avset, A. Bergamaschi, D. Cavouras, I. Evangelou, A. Fant, M.J. French, H. Georgiou, G. Hall, G. Iles, R. Longo, N. Manthos, J.M. Ostby, S. Pani, A. Peterzol, F. Psomadellis, G.J. Royle, H. Schulerud, R.D. Speller, P.F. van der Stelt, S. Theodoridis, F. Triantis, R. Turchetta, "The I-ImaS Project: End-Users Driven Specifications for the Design of a Novel Digital Medical Imaging System", Proc. IEEE NSS & MIC, Rome, 2004.
- M.E.Mavroforakis, H.V. Georgiou, D. Cavouras, N. Dimitropoulos, S. Theodoridis "Mammographic mass classification using textural and descriptive diagnostic data," DSP-2002, Santorini, Greece.
- H.V. Georgiou, M.E.Mavroforakis, D. Cavouras, N. Dimitropoulos, S. Theodoridis "Multi-scaled mammographic mass shape analysis and classification using NN", DSP-2002, Santorini, Greece.
- A. Pikrakis, S. Theodoridis, D. Kamarotos "Recognition of musical isolated musical patterns using context depended DTW", EUSIPCO-2002, Toulouse, France.
- Y. Kopsinis, S. Theodoridis "A novel low complexity cluster based MLSE equalizer for Q-PSK signaling schemes", DSP-2002, Santorini, Greece.
- Y Kopsinis, S. Theodoridis "A novel cluster based MLSE euqualizer for 2-PAM signaling scheme", EUSIPCO-2002, Toulouse, France.
- S. Theodoridis "FIR adaptive transversal filtering: A unified view", WISP-2001, Budapest, Hungary. (Invited state of the art lecture).
- Y. Kopsinis, S. Theodoridis "Cochannell interference rejection using clustering techniques and fuzzy inference", EUSIPCO-2000, Tampere, Finland.
- Y. Kopsinis, S. Theodoridis "Reduced complexity clustering techniques for channel equalization", WCC-2000, Benjing, China.
- V. Gezerlis, S. Theodoridis "A post-classification scheme for an OCR system for the notation of the Orthodox Hellenic Byzantine music", EUSIPCO-2000, Tampere, Finland, 2000.
- C. Georgoulakis, S. Theodoridis "Blind equaliztion for linear and non-linear channels", EUSIPCO-98, Rhodes, Greece, 1998.
- C. Georgoulakis, S. Theodoridis "Clustering based sequence equalizer for systems employing Trellis-Coded-Modulation", EUSIPCO-98, Rhodes, Greece, 1998.
- A. Pikrakis S. Theodoridis, D. Kamarotos "Recognition of isolated musical patterns using hidden Markov models", EUSIPCO-98, Rhodes, Greece, 1998.
- A. Pikrakis, S. Theodoridis, D. Kamarotos "Recognition of isolated musical patterns in the context of Greek traditional music using dynamic time warping techniques", Intl. Computer Music Conference, Thessaloniki, Sept. 1997.
- K. Berberidis, A. Rontogiannis, S. Theodoridis "Efficient block implementation of the LMS based Decision Feedback Equalization", DSP-97 Conference, Santorini, 1997.
- A Rontogiannis, S. Theodoridis "New multichannel fast QRD-LS adaptive algorithms", DSP-97 Conference, Santorini, 1997.
- E. Kofidis, S. Theodoriris, N. Kalouptsidis "Designing FIR perfect reconstruction systems given several of the analysis and synthesis filters", DSP-97 Conference, Santorini, 1997.
- A. Varkonyi-Coczy, S. Theodoridis "Fast sliding transforms in transform domain adaptive filtering", ICASSP-1997.
- A. Rontogiannis, S. Theodoridis "Inverse QR adaptive algorithms", IEEE Conf. on Elect. Circuits and Systems, Rhodes, Greece, Oct. 1996.
- A. Pikrakis, S. Theodoridis, D. Kamarotos "Recognition of isolated musical patterns in the context of Greek traditional music",IEEE Conf. on Elect. Circuits and Systems, Rhodes, Greece, Oct. 1996.
- E. Kofidis, S. Theodoridis, N. Kalouptsidis " Perfect reconstruction FIR filter banks with mirror-image symmetry", IEEE Conf. On Elect. Circuits and Systems, Rhodes, Greece, Oct. 1996.
- A. Rontogiannis, S. Theodoridis "A new highly parallel multichannel fast QRD LS adaptive algorithm", EUSIPCO-96, Trieste, Sept. 1996.
- E. Kofidis, S. Theodoridis, N. Kalouptsidis, "On perfect reconstruction FIR filter banks", EUSIPCO-96, Trieste, Sept. 1996.
- S. Theodoridis, C. Georgoulakis "Efficient clustering techniques for supervised and blind channel equalization in hostile environments", EUSIPCO-96, Trieste, Sept. 1996.
- K. Berberidis, S. Theodoridis, "A block exact Fast Newton Algorithm", ICASSP-95, Detroit.
- A. Rontogiannis, S. Theodoridis, "New Fast QR LS adaptive Algorithms", ICASSP-95, Detroit.
- E. Kofidis, S. Theodoridis, C. Kotropoulos, I. Pitas "Segmentation based L-filtering of speckle noise in ultrasound imaging", SPIE, Vol. 2180, Nonlinear Image Processing, 1994.
- C. Callender, S. Theodoridis, C. Cowan, "A novel technique for nonlinear channel equalization ",EUSIPCO-94.
- S. Theodoridis, G. Moustakides, K. Berberidis, "A multichannel algorithm for Decision feedback equalization", EUSIPCO-94.
- E. Kofidis, S. Theodoridis, K. Kotropoulos, J. Pitas, "Nonlinear adaptive image filtering via vector quantization techniques", SPIE-1994.
- S. Theodoridis, C. Cowan, S. See, "Nonlinear channel equalization using clusterring techniques", ICC-1992, Chicago.
- A. Liavas, S. Theodoridis, "Novel Schur type algorithm for near to Toeplitz linear systems of equations.", EUSIPCO-1992, Brussels.
- C. Callender, C. Cowan, S. Theodoridis, "The piecewise linear adaptive filter for channel equalization in digital communications", EUSIPCO-1992, Brussels.
- T. Petillon, A. Gilloire, S. Theodoridis, "A comparative study of efficient transversal algorithms on acoustic echo cancellation", EUSIPCO-92.
- T. Petillon, A. Gilloire, S. Theodoridis," Complexity reduction in fast RLS Transversal schemes", ICASSP-92.
- A. Gilloire T. Petillon, S. Theodoridis, "Acoustic echocancelation using Fast RLS adaptive filters", ISCAS-92.
- K. Berberidis, S. Theodoridis, "Efficient order recursive algorithms for linear phase filtering", EUSIPCO-1990, Barcelona.
- S. Theodoridis, G. Moustakides, A novel class of adaptive algorithms for multichannel filtering", EUSIPCO-1990, Barcelona.
- K. Berberidis, S. Theodoridis, "New fast split type algorithm for adaptive AR spectral analysis", ISCAS-1990, New Orleans, {invited paper}.
- A. Varvitsiotis, S. Theodoridis, "A novel structure for adaptive LS FIR filtering based on QR decomposition", ICASSP-1989, Glasgow.
- K. Berberidis, S. Theodoridis, "New lattice algorithms for FIR filters with linear phase", ISCAS-1989, Oregon.
- S. Theodoridis, D. Bakirtzis, N. Kalouptsidis," Highly concurrent algorithm for the solution of near-Toeplitz linear systems of equations", EUSIPCO-1988, Grenoble.
- S. Theodoridis, N. Kalouptsidis, "A highly parallel block adaptive algorithm for LS FIR filtering", ISCAS-1988, Finland.
- K. Berberidis, S. Theodoridis, "An adaptive normalized lattice algorithm for LS FIR multichannel filters with linear phase", ISCAS-1988, Finland.
- S. Theodoridis, K. Berberidis, N. Kalouptsidis, "Adaptive covariance type internally symmetric algorithm for LS filtering with linear phase", ISCAS-1988, Finland.
- S. Theodoridis, N. Kalouptsidis, D. Bakirtzis, "Highly parallel algorithms for LS FIR smoothing and MEM spectral analysis", ICASSP-88, New York.
- S. Theodoridis, N. Kalouptsidis, J. Proakis, "LS FIR smoothers and application to interference rejection in PN spread spectrum systems", ICASSP-87, Dallas, Texas.
- S. Theodoridis, N. Kalouptsidis, "Parallel algorithm for MSE estimation of 2-D noncausal image models", EUROMICRO, 1987.
- E.D.R. Shearman, W. Sandham, S. Theodoridis, P. Dexter, E. Bramley, P. Bradley, "Sea state in the north Atlantic observed by HF Radar from U.K", IUCRM Symposium on Wave dynamics, Miami, May 1981.
- E.D.R. Shearman, S. Theodoridis, W. Sandham, P. Bradley, "Phase instability of ionospheric propagation and its influence on HF Doppler Radar Remote sensing", IEE Conf. on Antennas and Propagation, April 1981.