Document Organization and Retrieval using Self Organizing Maps and Statistical Language Modeling. - Apostolos Georgakis; Constantine Kotropoulos; Alexandros Xafopoulos; Ioannis Pitas (PRIS, 2001)

A SOM Variant Based on the Wilcoxon Test for Document Organization and Retrieval. - Apostolos Georgakis; Constantine Kotropoulos; Ioannis Pitas (ICANN, 2002)

Application of support vector machines classifiers to visual speech recognition. - Mihaela Gordan; Constantine Kotropoulos; Apostolos Georgakis; Ioannis Pitas (ICIP (3), 2002)

Wigner filtering with smooth roll-off boundary for differentiation of noisy non-stationary signals. - Apostolos Georgakis; Lampros K. Stergioulas; Giannis Giakas (Signal Process., 2002)

Matched time-frequency filter for ECG signal enhancement. - Apostolos Georgakis; Lampros K. Stergioulas (MIE, 2003)

Fatigue analysis of the surface EMG signal in isometric constant force contractions using the averaged instantaneous frequency. - Apostolos Georgakis; Lampros K. Stergioulas; Giannis Giakas (IEEE Trans. Biomed. Eng., 2003)

Marginal median SOM for document organization and retrieval. - Apostolos Georgakis; Constantine Kotropoulos; Alexandros Xafopoulos; Ioannis Pitas (Neural Networks, 2004)

Textual information retrieval: An approach based on language modeling and neural networks. - Apostolos Georgakis (2004)

Behavior Modeling using Bigram Frequencies for Client-Side Link Prefetching. - Apostolos Georgakis; Haibo Li 001; Mihaela Gordan (EuroIMSA, 2006)

Content Based Image Retrieval Using a Bootstrapped SOM Network. - Apostolos Georgakis; Haibo Li 001 (ISNN (2), 2006)

User behavior modeling and content based speculative web page prefetching. - Apostolos Georgakis; Haibo Li 001 (Data Knowl. Eng., 2006)

Interference Suppression in the Wigner Distribution Using Fractional Fourier Transformation and Signal Synthesis. - Saad Ahemd Qazi; Apostolos Georgakis; Lampros K. Stergioulas; Mohammad Shikh-Bahaei (IEEE Trans. Signal Process., 2007)

LDPC Coded Adaptive Transmission over Fading Channels. - Alireza Kobravi; Mohammad Shikh-Bahaei; Mohamed-Slim Alouini; Apostolos Georgakis (WCNC, 2008)

Optimising expected spectral efficiency of adaptive multilevel quadrature amplitude modulation with service outage constraints over fading channels. - Mohammad Shikh-Bahaei; A. Kobarvi; Apostolos Georgakis (IET Commun., 2008)

Gait recognition based on time-frequency analysis. - Xiaxi Huang; Nikolaos V. Boulgouris; Apostolos Georgakis (DPS, 2009)

Estimation of the Second Derivative of Kinematic Impact Signals Using Fractional Fourier Domain Filtering. - Apostolos Georgakis; Suba Raman Subramaniam (IEEE Trans. Biomed. Eng., 2009)

Fractional Fourier-based denoising of kinematic signals with multiple impacts. - Suba Raman Subramaniam; Apostolos Georgakis (ISSPA, 2010)

Optimal two-stage filtering of elastograms. - Suba Raman Subramaniam; Tsz-Kin Hon; Wing-Kuen Ling; Apostolos Georgakis (EMBC, 2011)

Mean frequency estimation of surface EMG signals using filterbank methods. - Stephen R. Alty; Apostolos Georgakis (EUSIPCO, 2011)

STFT-based denoising of elastograms. - Tsz-Kin Hon; Suba Raman Subramaniam; Apostolos Georgakis; Steve Alty (ICASSP, 2011)

Optimal and simultaneous designs of Hermitian transforms and masks for reducing intraclass separations of feature vectors for anomaly detection of diabetic retinopathy images. - Suba Raman Subramaniam; Apostolos Georgakis; Bingo Wing-Kuen Ling; Jonathan Goh; Hongying Lilian Tang; Tünde Petö; George Saleh (CSNDSP, 2012)

Enhancing the Resolution of the Spectrogram Based on a Simple Adaptation Procedure. - Tsz-Kin Hon; Apostolos Georgakis (IEEE Trans. Signal Process., 2012)

Filtering in Rotated Time-Frequency Domains With Unknown Noise Statistics. - Suba Raman Subramaniam; Bingo Wing-Kuen Ling; Apostolos Georgakis (IEEE Trans. Signal Process., 2012)

Motion artifact suppression in the ECG signal by successive modifications in frequency and time. - Suba Raman Subramaniam; Bingo Wing-Kuen Ling; Apostolos Georgakis (EMBC, 2013)

Enhancing the readability of the Wigner distribution by exploiting its cross-terms geometry. - Tsz-Kin Hon; Alberto de la Fuente Gonzalez; Apostolos Georgakis (ICASSP, 2013)

Mask operations in discrete fractional Fourier transform domains with nearly white real valued wide sense stationary output signals. - Bingo Wing-Kuen Ling; Charlotte Yuk-Fan Ho; Zhijing Yang; Suba Raman Subramaniam; Apostolos Georgakis; Qingyun Dai (Digit. Signal Process., 2014)

Optimal design of Hermitian transform and vectors of both mask and window coefficients for denoising applications with both unknown noise characteristics and distortions. - Bingo Wing-Kuen Ling; Charlotte Yuk-Fan Ho; Suba Raman Subramaniam; Apostolos Georgakis; Jiang-Zhong Cao; Qingyun Dai (Signal Process., 2014)

Globally optimal joint design of two sets of mask coefficients in two different predefined rotated axes of time frequency plane for signal restoration applications. - Xiao-Zhi Zhang; Bingo Wing-Kuen Ling; Suba Raman Subramaniam; Apostolos Georgakis (Digit. Signal Process., 2015)