Texture analysis and segmentation of seismic images. - Ioannis Pitas; Costas Kotropoulos (ICASSP, 1989)

Use of Fractal Dimension in Signal Adaptive Filters for Speckle Reduction in Ultrasound B-Mode Images. - Xanthippos C. Magnisalis; Constantine Kotropoulos; Ioannis Pitas; Michael G. Strintzis (MIE, 1991)

A texture-based approach to the segmentation of seismic images. - Ioannis Pitas; Constantine Kotropoulos (Pattern Recognit., 1992)

Constrained adaptive LMS L-filters. - Constantine Kotropoulos; Ioannis Pitas (Signal Process., 1992)

A Variant of Learning Vector Quantizer Based on Split-Merge Statistical Tests. - Constantine Kotropoulos; Ioannis Pitas (CAIP, 1993)

Voronoi tessellation and Delauney triangulation using Euclidean disk growing in Z2. - Constantine Kotropoulos; Ioannis Pitas; A. Maglara (ICASSP (5), 1993)

A variant of learning vector quantizer based on the L2 mean for segmentation of ultrasonic images. - Constantine Kotropoulos; Ioannis Pitas; Xanthippos C. Magnisalis; Michael G. Strintzis (ISCAS, 1993)

Multichannel L-filter design based on marginal data ordering. - Constantine Kotropoulos; Ioannis Pitas (ICASSP (3), 1994)

Cellular LMS L-filters for Noise Suppression in Still Images and Image Sequences. - Maria Gabrani; Constantine Kotropoulos; Ioannis Pitas (ICIP (1), 1994)

Adaptive LMS L-filters for smoothing noisy images. - Constantine Kotropoulos; Ioannis Pitas (ICPR (3), 1994)

A Class of Order Statistics Learning Vector Quantizers. - Ioannis Pitas; Constantine Kotropoulos; Nikos Nikolaidis 001; Ruikang Yang; Moncef Gabbouj (ISCAS, 1994)

Nonlinear ultrasonic image processing based on signal-adaptive filters and self-organizing neural networks. - Constantine Kotropoulos; Xanthippos C. Magnisalis; Ioannis Pitas; Michael G. Strintzis (IEEE Trans. Image Process., 1994)

Multichannel L filters based on marginal data ordering. - Constantine Kotropoulos; Ioannis Pitas (IEEE Trans. Signal Process., 1994)

Morphological signal adaptive median filter for noise removal. - Sofia Tsekeridou; Constantine Kotropoulos; Ioannis Pitas (ICECS, 1996)

Multichannel adaptive L-filters in color image filtering. - Constantine Kotropoulos; Ioannis Pitas; Maria Gabrani (ICIP (1), 1996)

Nonlinear adaptive filters for speckle suppression in ultrasonic images. - Eleftherios Kofidis; Sergios Theodoridis; Constantine Kotropoulos; Ioannis Pitas (Signal Process., 1996)

Adaptive LMS L-filters for noise suppression in images. - Constantine Kotropoulos; Ioannis Pitas (IEEE Trans. Image Process., 1996)

Order statistics learning vector quantizer. - Ioannis Pitas; Constantine Kotropoulos; Nikos Nikolaidis 001; Ruikang Yang; Moncef Gabbouj (IEEE Trans. Image Process., 1996)

Face Authentication Using Morphological Dynamic Link Architecture. - Constantine Kotropoulos; Ioannis Pitas; Stefan Fischer 005; Benoît Duc (AVBPA, 1997)

Rule-based face detection in frontal views. - Constantine Kotropoulos; Ioannis Pitas (ICASSP, 1997)

Face Authentication Based on Morphological Grid Matching. - Constantine Kotropoulos; Ioannis Pitas (ICIP (1), 1997)

Variants of Dynamic Link Architecture Based on Mathematical Morphology for Frontal Face Authentication. - Anastasios Tefas; Constantine Kotropoulos; Ioannis Pitas (CVPR, 1998)

Linear projection algorithms and morphological dynamic link architecture for frontal face verification. - Constantine Kotropoulos; Ioannis Pitas (EUSIPCO, 1998)

Face Verification based on Morphological Shape Decomposition. - Anastasios Tefas; Constantine Kotropoulos; Ioannis Pitas (FG, 1998)

Face authentication using variants of elastic graph matching based on mathematical morphology that incorporate local discriminant coefficients. - Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas (ICASSP, 1998)

Frontal Face Authentication using Variants of Dynamic Link Matching Based on Mathematical Morphology. - Costas Kotropoulos; Anastasios Tefas; Ioannis Pitas (ICIP (1), 1998)

Robust and adaptive techniques in self-organizing neural networks. - Constantine Kotropoulos; Nikos Nikolaidis 001; Adrian G. Bors; Ioannis Pitas (Int. J. Comput. Math., 1998)

Compensating for variable recording conditions in frontal face authentication algorithms. - Anastasios Tefas; Yann Menguy; Constantine Kotropoulos; Gaël Richard; Ioannis Pitas; Philip Lockwood (ICASSP, 1999)

Morphological Elastic Graph Matching Applied to Frontal Face Authentication under Optimal and Real Conditions. - Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas (ICMCS, Vol. 2, 1999)

Multi Modal Verification for Teleservices and Security Applications (M2VTS). - Gaël Richard; Yann Menguy; I. Guis; N. Suaudeau; Jérôme Boudy; Philip Lockwood; C. Fernández; Fernando Fernández; Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas; R. Heimgartner; et al. (ICMCS, Vol. 2, 1999)

Performance assessment of morphological dynamic link architecture under optimal and real operating conditions. - Costas Kotropoulos; Anastasios Tefas; Ioannis Pitas; C. Fernández; F. Fernández (NSIP, 1999)

On the Theoretical properties of Lp mean comparators. - Constantine Kotropoulos; Ioannis Pitas (EUSIPCO, 2000)

Face authentication by using elastic graph matching and support vector machines. - Anastasios Tefas; Constantine Kotropoulos; Ioannis Pitas (ICASSP, 2000)

Using Support Vector Machines for Face Authentication Based on Elastic Graph Matching. - Anastasios Tefas; Constantine Kotropoulos; Ioannis Pitas (ICIP, 2000)

Comparison of Face Verification Results on the XM2VTS Database. - Jiri Matas; Miroslav Hamouz; Kenneth Jonsson; Josef Kittler; Yongping Li; Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas; Teewoon Tan; Hong Yan 001; Fabrizio Smeraldi; N. Capdevielle; et al. (ICPR, 2000)

Morphological elastic graph matching applied to frontal face authentication under well-controlled and real conditions. - Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas (Pattern Recognit., 2000)

Frontal face authentication using morphological elastic graph matching. - Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas (IEEE Trans. Image Process., 2000)

Frontal Face Authentication Using Discriminating Grids with Morphological Feature Vectors. - Constantine Kotropoulos; Anastasios Tefas; Ioannis Pitas (IEEE Trans. Multim., 2000)

Frontal face detection using support vector machines and back-propagation neural networks. - Nikoletta Bassiou; Constantine Kotropoulos; T. Kosmidis; Ioannis Pitas (ICIP (1), 2001)

Combining support vector machines for accurate face detection. - Ioan Buciu; Constantine Kotropoulos; Ioannis Pitas (ICIP (1), 2001)

Hierarchical Word Clustering for Relevance Judgments in Information Retrieval. - Nikoletta Bassiou; Constantine Kotropoulos; Ioannis Pitas (PRIS, 2001)

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

Using Support Vector Machines to Enhance the Performance of Elastic Graph Matching for Frontal Face Authentication. - Anastasios Tefas; Constantine Kotropoulos; Ioannis Pitas (IEEE Trans. Pattern Anal. Mach. Intell., 2001)

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

Recent advances in biometric person authentication. - Jean-Luc Dugelay; Jean-Claude Junqua; Costas Kotropoulos; Roland Kuhn 001; Florent Perronnin; Ioannis Pitas (ICASSP, 2002)

Visual speech recognition using support vector machines. - Mihaela Gordan; Constantine Kotropoulos; Ioannis Pitas (DSP, 2002)

On the stability of support vector machines for face detection. - Ioan Buciu; Constantine Kotropoulos; Ioannis Pitas (ICIP (3), 2002)

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

A Temporal Network of Support Vector Machine Classifiers for the Recognition of Visual Speech. - Mihaela Gordan; Constantine Kotropoulos; Ioannis Pitas (SETN, 2002)

A Support Vector Machine-Based Dynamic Network for Visual Speech Recognition Applications. - Mihaela Gordan; Constantine Kotropoulos; Ioannis Pitas (EURASIP J. Adv. Signal Process., 2002)

Face verification using elastic graph matching based on morphological signal decomposition. - Anastasios Tefas; Constantine Kotropoulos; Ioannis Pitas (Signal Process., 2002)

Sorting networks using Lp mean comparators for signal processing applications. - Constantine Kotropoulos; Michael Pappas; Ioannis Pitas (IEEE Trans. Signal Process., 2002)

CAML - A Universal Configuration Language for Dialogue Systems. - Gergely Kovásznai; Constantine Kotropoulos; Ioannis Pitas (DEXA, 2003)

Video shot segmentation using singular value decomposition. - Zuzana Cernekova; Constantine Kotropoulos; Ioannis Pitas (ICASSP (3), 2003)

ICA and Gabor representation for facial expression recognition. - Ioan Buciu; Constantine Kotropoulos; Ioannis Pitas (ICIP (2), 2003)

Segmentation of ultrasonic images using Support Vector Machines. - Constantine Kotropoulos; Ioannis Pitas (Pattern Recognit. Lett., 2003)

Preface. - Constantine Kotropoulos; Ioannis Pitas; Athina P. Petropulu (Pattern Recognit. Lett., 2003)

Automatic speech classification to five emotional states based on gender information. - Dimitrios Ververidis; Constantine Kotropoulos (EUSIPCO, 2004)

Audio PCA in a novel multimedia scheme for scene change detection. - Marios Kyperountas; Zuzana Cernekova; Constantine Kotropoulos; Marios A. Gavrielides; Ioannis Pitas (ICASSP (4), 2004)

Automatic emotional speech classification. - Dimitrios Ververidis; Constantine Kotropoulos; Ioannis Pitas (ICASSP (1), 2004)

MPEG-4 compliant reproduction of face animation created in Maya. - Charalampos Laftsidis; Costas Kotropoulos; Ioannis Pitas (ICME, 2004)

Searching relevant syllable context by clustering for alignment in modern Greek speech. - R. Rispoli; Costas Kotropoulos; Ioannis Pitas (ICME, 2004)

Automatic detection of vocal fold paralysis and edema. - Maria Marinaki; Constantine Kotropoulos; Ioannis Pitas; Nikolaos Maglaveras (INTERSPEECH, 2004)

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

Language identification in web documents using discrete HMMs. - Alexandros Xafopoulos; Constantine Kotropoulos; George Almpanidis; Ioannis Pitas (Pattern Recognit., 2004)

Focused Crawling Using Latent Semantic Indexing - An Application for Vertical Search Engines. - George Almpanidis; Constantine Kotropoulos; Ioannis Pitas (ECDL, 2005)

Sequential forward feature selection with low computational cost. - Dimitrios Ververidis; Constantine Kotropoulos (EUSIPCO, 2005)

Combining Text and Link Analysis for Focused Crawling. - George Almpanidis; Constantine Kotropoulos (ICAPR (1), 2005)

Modified Gauss-Seidel affine projection algorithm for acoustic echo cancellation. - Felix Albu; Constantine Kotropoulos (ICASSP (3), 2005)

Emotional Speech Classification Using Gaussian Mixture Models and the Sequential Floating Forward Selection Algorithm. - Dimitrios Ververidis; Constantine Kotropoulos (ICME, 2005)

Coordinate descent iterations in pseudo affine projection algorithm. - Felix Albu; Constantine Kotropoulos (ISCAS (3), 2005)

Video shot segmentation using fusion of SVD and mutual information features. - Zuzana Cernekova; Constantine Kotropoulos; Nikolaos Nikolaidis 001; Ioannis Pitas (ISCAS (4), 2005)

Emotional speech classification using Gaussian mixture models. - Dimitrios Ververidis; Constantine Kotropoulos (ISCAS (3), 2005)

Feature Selection Based on Mutual Correlation. - Michal Haindl; Petr Somol; Dimitrios Ververidis; Constantine Kotropoulos (CIARP, 2006)

Color histogram equalization using probability smoothing. - Nikoletta Bassiou; Constantine Kotropoulos (EUSIPCO, 2006)

Testing supervised classifiers based on non-negative matrix factorization to musical instrument classification. - Emmanouil Benetos; Constantine Kotropoulos; Thomas Lidy; Andreas Rauber (EUSIPCO, 2006)

Fast sequential floating forward selection applied to emotional speech features estimated on DES and SUSAS data collections. - Dimitrios Ververidis; Constantine Kotropoulos (EUSIPCO, 2006)

On the Variants of the Self-Organizing Map That Are Based on Order Statistics. - Vassiliki Moschou; Dimitrios Ververidis; Constantine Kotropoulos (ICANN (1), 2006)

Musical Instrument Classification using Non-Negative Matrix Factorization Algorithms and Subset Feature Selection. - Emmanouil Benetos; Margarita Kotti; Constantine Kotropoulos (ICASSP (5), 2006)

Self Organizing Maps for Reducing the Number of Clusters by One on Simplex Subspaces. - Constantine Kotropoulos; Vassiliki Moschou (ICASSP (5), 2006)

Voice Activity Detection with Generalized Gamma Distribution. - George Almpanidis; Constantine Kotropoulos (ICME, 2006)

Applying Supervised Classifiers Based on Non-negative Matrix Factorization to Musical Instrument Classification. - Emmanouil Benetos; Margarita Kotti; Constantine Kotropoulos (ICME, 2006)

Automatic Speaker Segmentation using Multiple Features and Distance Measures: A Comparison of Three Approaches. - Margarita Kotti; Luis P. M. Martins; Emmanouil Benetos; Jaime S. Cardoso 001; Constantine Kotropoulos (ICME, 2006)

Musical instrument classification using non-negative matrix factorization algorithms. - Emmanouil Benetos; Margarita Kotti; Constantine Kotropoulos (ISCAS, 2006)

Automatic speaker change detection with the Bayesian information criterion using MPEG-7 features and a fusion scheme. - Margarita Kotti; Emmanouil Benetos; Constantine Kotropoulos (ISCAS, 2006)

A Framework for Dialogue Detection in Movies. - Margarita Kotti; Constantine Kotropoulos; Bartosz Ziólko; Ioannis Pitas; Vassiliki Moschou (MRCS, 2006)

Voice Activity Detection Using Generalized Gamma Distribution. - George Almpanidis; Constantine Kotropoulos (SETN, 2006)

A Novel Updating Scheme for Probabilistic Latent Semantic Indexing. - Constantine Kotropoulos; Athanasios Papaioannou (SETN, 2006)

Detection of Vocal Fold Paralysis and Edema Using Linear Discriminant Classifiers. - Euthymius Ziogas; Constantine Kotropoulos (SETN, 2006)

Demonstrating the stability of support vector machines for classification. - Ioan Buciu; Constantine Kotropoulos; Ioannis Pitas (Signal Process., 2006)

Emotional speech recognition: Resources, features, and methods. - Dimitrios Ververidis; Constantine Kotropoulos (Speech Commun., 2006)

Automatic phonemic segmentation using the Bayesian information criterion with generalised Gamma priors. - George Almpanidis; Constantine Kotropoulos (EUSIPCO, 2007)

Improving speech emotion recognition using adaptive genetic algorithms. - Mohammad Hossein Sedaaghi; Dimitrios Ververidis; Constantine Kotropoulos (EUSIPCO, 2007)

Systematic comparison of BIC-based speaker segmentation systems. - Vassiliki Moschou; Margarita Kotti; Emmanouil Benetos; Constantine Kotropoulos (MMSP, 2007)

Using Adaptive Genetic Algorithms to Improve Speech Emotion Recognition. - Mohammad Hosein Sedaaghi; Constantine Kotropoulos; Dimitrios Ververidis (MMSP, 2007)

Color image histogram equalization by absolute discounting back-off. - Nikoletta Bassiou; Constantine Kotropoulos (Comput. Vis. Image Underst., 2007)

A neural network approach to audio-assisted movie dialogue detection. - Margarita Kotti; Emmanouil Benetos; Constantine Kotropoulos; Ioannis Pitas (Neurocomputing, 2007)

Assessment of self-organizing map variants for clustering with application to redistribution of emotional speech patterns. - Vassiliki Moschou; Dimitrios Ververidis; Constantine Kotropoulos (Neurocomputing, 2007)

Combining text and link analysis for focused crawling - An application for vertical search engines. - George Almpanidis; Constantine Kotropoulos; Ioannis Pitas (Inf. Syst., 2007)

Video shot-boundary detection using singular-value decomposition and statistical tests. - Zuzana Cernekova; Constantine Kotropoulos; Ioannis Pitas (J. Electronic Imaging, 2007)

Enhanced Eigen-Audioframes for Audiovisual Scene Change Detection. - Marios Kyperountas; Constantine Kotropoulos; Ioannis Pitas (IEEE Trans. Multim., 2007)

Movie Analysis with Emphasis to Dialogue and Action Scene Detection. - Emmanouil Benetos; Spyridon Siatras; Constantine Kotropoulos; Nikos Nikolaidis 001; Ioannis Pitas (Multimodal Processing and Interaction, 2008)

Multimodal Speaker Identification Based on Text and Speech. - Panagiotis Moschonas; Constantine Kotropoulos (BIOID, 2008)

A tensor-based approach for automatic music genre classification. - Emmanouil Benetos; Constantine Kotropoulos (EUSIPCO, 2008)

Gender classification in two Emotional Speech databases. - Margarita Kotti; Constantine Kotropoulos (ICPR, 2008)

Music Genre Classification: A Multilinear Approach. - Ioannis Panagakis; Emmanouil Benetos; Constantine Kotropoulos (ISMIR, 2008)

Speaker segmentation and clustering. - Margarita Kotti; Vassiliki Moschou; Constantine Kotropoulos (Signal Process., 2008)

Fast and accurate sequential floating forward feature selection with the Bayes classifier applied to speech emotion recognition. - Dimitrios Ververidis; Constantine Kotropoulos (Signal Process., 2008)

Phonemic segmentation using the generalised Gamma distribution and small sample Bayesian information criterion. - George Almpanidis; Constantine Kotropoulos (Speech Commun., 2008)

Computationally Efficient and Robust BIC-Based Speaker Segmentation. - Margarita Kotti; Emmanouil Benetos; Costas Kotropoulos (IEEE Trans. Speech Audio Process., 2008)

Audio-Assisted Movie Dialogue Detection. - Margarita Kotti; Dimitrios Ververidis; Georgios Evangelopoulos; Ioannis Panagakis; Costas Kotropoulos; Petros Maragos; Ioannis Pitas (IEEE Trans. Circuits Syst. Video Technol., 2008)

Gaussian Mixture Modeling by Exploiting the Mahalanobis Distance. - Dimitrios Ververidis; Constantine Kotropoulos (IEEE Trans. Signal Process., 2008)

Music genre classification via sparse representations of auditory temporal modulations. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (EUSIPCO, 2009)

Music Genre Classification Using Locality Preserving Non-Negative Tensor Factorization and Sparse Representations. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (ISMIR, 2009)

Linear Classifier with Reject Option for the Detection of Vocal Fold Paralysis and Vocal Fold Edema. - Constantine Kotropoulos; Gonzalo R. Arce (EURASIP J. Adv. Signal Process., 2009)

Information Loss of the Mahalanobis Distance in High Dimensions: Application to Feature Selection. - Dimitrios Ververidis; Constantine Kotropoulos (IEEE Trans. Pattern Anal. Mach. Intell., 2009)

Comparison of ICA approaches for facial expression recognition. - Ioan Buciu; Costas Kotropoulos; Ioannis Pitas (Signal Image Video Process., 2009)

Robust Detection of Phone Boundaries Using Model Selection Criteria With Few Observations. - George Almpanidis; Margarita Kotti; Constantine Kotropoulos (IEEE Trans. Speech Audio Process., 2009)

Speaker-independent negative emotion recognition. - Margarita Kotti; Fabio Paternò; Constantine Kotropoulos (CIP, 2010)

Sparse multi-label linear embedding nonnegative tensor factorization for automatic music tagging. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (EUSIPCO, 2010)

Music genre classification via Topology Preserving Non-Negative Tensor Factorization and sparse representations. - Yannis Panagakis; Constantine Kotropoulos (ICASSP, 2010)

Word Clustering Using PLSA Enhanced with Long Distance Bigrams. - Nikoletta Bassiou; Constantine Kotropoulos (ICPR, 2010)

Ensemble Discriminant Sparse Projections Applied to Music Genre Classification. - Constantine Kotropoulos; Gonzalo R. Arce; Yannis Panagakis (ICPR, 2010)

Sparse Multi-label Linear Embedding Within Nonnegative Tensor Factorization Applied to Music Tagging. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (ISMIR, 2010)

Speaker Diarization Exploiting the Eigengap Criterion and Cluster Ensembles. - Nikoletta Bassiou; Vassiliki Moschou; Constantine Kotropoulos (IEEE Trans. Speech Audio Process., 2010)

Non-Negative Tensor Factorization Applied to Music Genre Classification. - Emmanouil Benetos; Constantine Kotropoulos (IEEE Trans. Speech Audio Process., 2010)

Non-Negative Multilinear Principal Component Analysis of Auditory Temporal Modulations for Music Genre Classification. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (IEEE Trans. Speech Audio Process., 2010)

Automatic music mood classification via Low-Rank Representation. - Yannis Panagakis; Constantine Kotropoulos (EUSIPCO, 2011)

Automatic music tagging via PARAFAC2. - Yannis Panagakis; Constantine Kotropoulos (ICASSP, 2011)

l1-Graph Based Music Structure Analysis. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (ISMIR, 2011)

RPLSA: A novel updating scheme for Probabilistic Latent Semantic Analysis. - Nikoletta Bassiou; Constantine Kotropoulos (Comput. Speech Lang., 2011)

Long distance bigram models applied to word clustering. - Nikoletta Bassiou; Constantine Kotropoulos (Pattern Recognit., 2011)

Music structure analysis by subspace modeling. - Yannis Panagakis; Constantine Kotropoulos (EUSIPCO, 2012)

Automatic music tagging by low-rank representation. - Yannis Panagakis; Constantine Kotropoulos (ICASSP, 2012)

Music Structure Analysis by Ridge Regression of Beat-synchronous Audio Features. - Yannis Panagakis; Constantine Kotropoulos (ISMIR, 2012)

Automatic telephone handset identification by sparse representation of random spectral features. - Yannis Panagakis; Constantine Kotropoulos (MM&Sec, 2012)

Telephone handset identification by feature selection and sparse representations. - Yannis Panagakis; Constantine Kotropoulos (WIFS, 2012)

Music recommendation using hypergraphs and group sparsity. - Antonis Theodoridis; Constantine Kotropoulos; Yannis Panagakis (ICASSP, 2013)

A game with a purpose for annotating Greek folk music in a web content management system. - Emmanouil Giouvanakis; Constantine Kotropoulos; Antonis Theodoridis; Ioannis Pitas (DSP, 2013)

Symmetric α-stable sparse linear regression for musical audio denoising. - Nikoletta Bassiou; Constantine Kotropoulos; Evangelia Koliopoulou (ISPA, 2013)

Telephone handset identification using sparse representations of spectral feature sketches. - Constantine Kotropoulos (IWBF, 2013)

Music classification by low-rank semantic mappings. - Yannis Panagakis; Constantine Kotropoulos (EURASIP J. Audio Speech Music. Process., 2013)

Telephone Handset Identification by Collaborative Representations. - Yannis Panagakis; Constantine Kotropoulos (Int. J. Digit. Crime Forensics, 2013)

Boosting the weights of positive words in image retrieval. - Emmanouil Giouvanakis; Constantine Kotropoulos (EUSIPCO, 2014)

Simultaneous image tagging and geo-location prediction within hypergraph ranking framework. - Konstantinos Pliakos; Constantine Kotropoulos (ICASSP, 2014)

Saliency map driven image retrieval combining the bag-of-words model and PLSA. - Emmanouil Giouvanakis; Constantine Kotropoulos (DSP, 2014)

Mobile phone identification using recorded speech signals. - Constantine Kotropoulos; Stamatios Samaras (DSP, 2014)

PLSA driven image annotation, classification, and tourism recommendation. - Konstantinos Pliakos; Constantine Kotropoulos (ICIP, 2014)

Musical Audio Denoising Assuming Symmetric α-Stable Noise. - Nikoletta Bassiou; Constantine Kotropoulos (ICMC, 2014)

Personalized and geo-referenced image recommendation using unified hypergraph learning and group sparsity optimization. - Konstantinos Pliakos; Constantine Kotropoulos (ISCCSP, 2014)

Personalized music tagging using ranking on hypergraphs. - Konstantinos Pliakos; Constantine Kotropoulos (ISCCSP, 2014)

Subspace clustering applied to face images. - Constantine Kotropoulos; Konstantinos Pitas (IWBF, 2014)

Social image search exploiting joint visual-textual information within a fuzzy hypergraph framework. - Konstantinos Pliakos; Constantine Kotropoulos (MMSP, 2014)

Greek folk music denoising under a symmetric α-stable noise assumption. - Nikoletta Bassiou; Constantine Kotropoulos; Ioannis Pitas (QSHINE, 2014)

Simultaneous Image Clustering, Classification and Annotation for Tourism Recommendation. - Konstantinos Pliakos; Constantine Kotropoulos (SETN, 2014)

Source phone identification using sketches of features. - Constantine Kotropoulos (IET Biom., 2014)

Elastic Net subspace clustering applied to pop/rock music structure analysis. - Yannis Panagakis; Constantine Kotropoulos (Pattern Recognit. Lett., 2014)

Music genre classification via joint sparse low-rank representation of audio features. - Yannis Panagakis; Constantine Kotropoulos; Gonzalo R. Arce (IEEE ACM Trans. Audio Speech Lang. Process., 2014)

Online PLSA: Batch Updating Techniques Including Out-of-Vocabulary Words. - Nikoletta K. Bassiou; Constantine Kotropoulos (IEEE Trans. Neural Networks Learn. Syst., 2014)

A maximum correntropy criterion for robust multidimensional scaling. - Fotios D. Mandanas; Constantine Kotropoulos (ICASSP, 2015)

Weight estimation in hypergraph learning. - Konstantinos Pliakos; Constantine Kotropoulos (ICASSP, 2015)

Image tagging using tensor decomposition. - Michail Panagopoulos; Constantine Kotropoulos (IISA, 2015)

Image tag recommendation based on novel tensor structures and their decompositions. - Panagiotis Barmpoutis; Constantine Kotropoulos; Konstantinos Pliakos (ISPA, 2015)

Greek folk music classification into two genres using lyrics and audio via canonical correlation analysis. - Nikoletta Bassiou; Constantine Kotropoulos; Anastasios Papazoglou-Chalikias (ISPA, 2015)

Video summarization based on shot boundary detection with penalized contrasts. - Paschalina Medentzidou; Constantine Kotropoulos (ISPA, 2015)

Correntropy based robust multidimensional scaling applied to faces. - Fotios D. Mandanas; Constantine Kotropoulos (IWBF, 2015)

Random subspace method for source camera identification. - Ruizhe Li 002; Constantine Kotropoulos; Chang-Tsun Li; Yu Guan (MLSP, 2015)

Automatic image tagging and recommendation via PARAFAC2. - Evangelia Pantraki; Constantine Kotropoulos (MLSP, 2015)

Building an Image Annotation and Tourism Recommender System. - Konstantinos Pliakos; Constantine Kotropoulos (Int. J. Artif. Intell. Tools, 2015)

Enhanced similarities for a music Recommender System. - Vasileios Gavriilidis; Anastasios Tefas; Constantine Kotropoulos; Nikos Nikolaidis 001 (DMIAF, 2016)

Restoration of missing data in Greek folk music by interpolation techniques. - Paschalina Medentzidou; Constantine Kotropoulos (DMIAF, 2016)

Greek folk music classification using auditory cortical representations. - Eftychia Fotiadou; Nikoletta Bassiou; Constantine Kotropoulos (EUSIPCO, 2016)

Adaptive algorithms for hypergraph learning. - Aikaterini Chasapi; Constantine Kotropoulos; Konstantinos Pliakos (ICASSP, 2016)

Age interval and gender prediction using PARAFAC2 applied to speech utterances. - Evangelia Pantraki; Constantine Kotropoulos; Andreas Lanitis (IWBF, 2016)

Multi-way regression for age prediction exploiting speech and face image information. - Evangelia Pantraki; Constantine Kotropoulos (EUSIPCO, 2017)

Robust multidimensional scaling employing M-estimators and nuclear norm regularization. - Fotios D. Mandanas; Constantine Kotropoulos (GlobalSIP, 2017)

Using marginal median and block least mean squares in mobile adaptive networks. - Fotios D. Mandanas; Constantine Kotropoulos (GlobalSIP, 2017)

Age interval and gender prediction using PARAFAC2 and SVMs based on visual and aural features. - Evangelia Pantraki; Constantine Kotropoulos; Andreas Lanitis (IET Biom., 2017)

Robust Multidimensional Scaling Using a Maximum Correntropy Criterion. - Fotios D. Mandanas; Costas Kotropoulos (IEEE Trans. Signal Process., 2017)

Prediction Methods for Time Evolving Dyadic Processes. - Myrsini Ntemi; Constantine Kotropoulos (EUSIPCO, 2018)

Face Aging as Image-to-Image Translation Using Shared-Latent Space Generative Adversarial Networks. - Evangelia Pantraki; Constantine Kotropoulos (GlobalSIP, 2018)

Assessing spectral estimation methods for electric network frequency extraction. - Georgios Karantaidis; Constantine Kotropoulos (PCI, 2018)

M-estimators for robust multidimensional scaling employing ℓ2, 1 norm regularization. - Fotios D. Mandanas; Constantine Kotropoulos (Pattern Recognit., 2018)

A Dyadic Particle Filter for Price Prediction. - Myrsini Ntemi; Constantine Kotropoulos (EUSIPCO, 2019)

Leveraging Image-to-image Translation Generative Adversarial Networks for Face Aging. - Evangelia Pantraki; Constantine Kotropoulos; Andreas Lanitis (ICASSP, 2019)

Block Randomized Optimization for Adaptive Hypergraph Learning. - George Karantaidis; Ioannis Sarridis; Constantine Kotropoulos (ICIP, 2019)

A Simple Algorithm for Non-Negative Sparse Principal Component Analysis. - Ioannis Tsingalis; Constantine Kotropoulos (ICIP, 2019)

Efficient Capon-Based Approach Exploiting Temporal Windowing for Electric Network Frequency Estimation. - George Karantaidis; Constantine Kotropoulos (MLSP, 2019)

A Weighted Ordered Probit Collaborative Kalman Filter For Hotel Rating Prediction. - Myrsini Ntemi; Constantine Kotropoulos; Emmanouil Gionanidis (MLSP, 2019)

Digit Recognition Applied to Reconstructed Audio Signals Using Deep Learning. - Anastasia-Sotiria Toufa; Constantine Kotropoulos (ICPR, 2020)

Datasets and Performance Metrics for Greek Named Entity Recognition. - Nikos Bartziokas; Thanassis Mavropoulos; Constantine Kotropoulos (SETN, 2020)

A dynamic dyadic particle filter for price prediction. - Myrsini Ntemi; Constantine Kotropoulos (Signal Process., 2020)

Subspace Learning and Feature Selection via Orthogonal Mapping. - Fotios D. Mandanas; Constantine Kotropoulos (IEEE Trans. Signal Process., 2020)

A Multi-step Ahead Dyadic Particle Filter for Price Prediction. - Myrsini Ntemi; Constantine Kotropoulos (EUSIPCO, 2021)

Neural Factorization Applied to Interaction Matrix for Recommendation. - Ioannis Sarridis; Constantine Kotropoulos (EUSIPCO, 2021)

Opinion Recommendation Using Coverage for Adaptive Prediction. - Emmanouil Gionanidis; Constantine Kotropoulos; Myrsini Ntemi (MLSP, 2021)

Blackman-Tukey spectral estimation and electric network frequency matching from power mains and speech recordings. - Georgios Karantaidis; Constantine Kotropoulos (IET Signal Process., 2021)

An Automated Approach for Electric Network Frequency Estimation in Static and Non-Static Digital Video Recordings. - Georgios Karantaidis; Constantine Kotropoulos (J. Imaging, 2021)

Face aging using global and pyramid generative adversarial networks. - Evangelia Pantraki; Constantine Kotropoulos (Mach. Vis. Appl., 2021)

A jump-diffusion particle filter for price prediction. - Myrsini Ntemi; Constantine Kotropoulos (Signal Process., 2021)

Adaptive hypergraph learning with multi-stage optimizations for image and tag recommendation. - Georgios Karantaidis; Ioannis Sarridis; Constantine Kotropoulos (Signal Process. Image Commun., 2021)

Image Driven Optimal Personalized Route Recommendation. - Ioannis Sarridis; Georgios Karantaidis; Constantine Kotropoulos (IVMSP, 2022)

Authorship Attribution in Greek Literature Using Word Adjacencies. - Rizos-Theodoros Chadoulis; Andreas Nikolaou; Constantine Kotropoulos (SETN, 2022)

Online hotel rating prediction through a dynamic weighted ordered probit model. - Myrsini Ntemi; Constantine Kotropoulos (Digit. Signal Process., 2022)

Cross-lingual transfer learning: A PARAFAC2 approach. - Evangelia Pantraki; Ioannis Tsingalis; Constantine Kotropoulos (Pattern Recognit. Lett., 2022)

Non-Negative Sparse PCA: An Intelligible Exact Approach. - Ioannis Tsingalis; Constantine Kotropoulos; Anastasios Drosou; Dimitrios Tzovaras (IEEE Trans. Emerg. Top. Comput. Intell., 2022)

Electric Network Frequency Detection Using Least Absolute Deviations. - Christos Korgialas; Constantine Kotropoulos (ICASSP, 2023)

Dual Hypergraph Features for Path Inference in Wikipedia Links. - Anastasia-Sotiria Toufa; Constantine Kotropoulos; Ioannis Tsingalis (IJCNN, 2023)

On Robust Electric Network Frequency Detection Using Huber Regression. - Christos Korgialas; Constantine Kotropoulos (PCI, 2023)

DualGRETEL+: Exploiting Dual Hypergraphs for Path Inference Applied to Navigation Data. - Anastasia-Sotiria Toufa; Ioannis Tsingalis; Constantine Kotropoulos (PCI, 2023)

Electric Network Frequency Optical Sensing Devices. - Christos Moysiadis; Georgios Karantaidis; Constantine Kotropoulos (CoRR, 2023)

Face Aging by Explainable Conditional Adversarial Autoencoders. - Christos Korgialas; Evangelia Pantraki; Angeliki Bolari; Martha Sotiroudi; Constantine Kotropoulos (J. Imaging, 2023)

An Autoregressive Graph Convolutional Long Short-Term Memory Hybrid Neural Network for Accurate Prediction of COVID-19 Cases. - Myrsini Ntemi; Ioannis Sarridis; Constantine Kotropoulos (IEEE Trans. Comput. Soc. Syst., 2023)

Speech Pathology Classification. - Spyridon Drakakis; Athina Gourou; Samouil Pratzioti; Constantine Kotropoulos (IEEECONF, 2024)

Explainable Camera Model Identification Employing Log-Mel Spectrograms from Videos' Audio. - Christos Korgialas; Ioannis Tsingalis; Constantine Kotropoulos (IEEECONF, 2024)

Interpretable Face Aging: Enhancing Conditional Adversarial Autoencoders with Lime Explanations. - Christos Korgialas; Evangelia Pantraki; Constantine Kotropoulos (ICASSP, 2024)

Applying the Neural Bellman-Ford Model to the Single Source Shortest Path Problem. - Spyridon Drakakis; Constantine Kotropoulos (ICPRAM, 2024)

Mobile Phone Identification from Recorded Speech Signals Using Non-Speech Segments and Universal Background Model Adaptation. - Dimitrios Kritsiolis; Constantine Kotropoulos (ICPRAM, 2024)

On Spectrogram Analysis in a Multiple Classifier Fusion Framework for Power Grid Classification Using Electric Network Frequency. - Georgios Tzolopoulos; Christos Korgialas; Constantine Kotropoulos (ICPRAM, 2024)

A Robust RELAX-Based Algorithm for Enhanced Electric Network Frequency Estimation. - Christos Korgialas; Constantine Kotropoulos (SETN, 2024)

Leveraging Electric Network Frequency Estimation for Audio Authentication. - Christos Korgialas; Constantine Kotropoulos; Konstantinos N. Plataniotis (IEEE Access, 2024)

On Explainable Closed-Set Source Device Identification Using Log-Mel Spectrograms From Videos' Audio: A Grad-CAM Approach. - Christos Korgialas; Georgios Tzolopoulos; Constantine Kotropoulos (IEEE Access, 2024)

Camera Model Identification Using Audio and Visual Content from Videos. - Ioannis Tsingalis; Christos Korgialas; Constantine Kotropoulos (CoRR, 2024)

Constructing and Analyzing Different Density Graphs for Path Extrapolation in Wikipedia. - Martha Sotiroudi; Anastasia-Sotiria Toufa; Constantine Kotropoulos (CoRR, 2024)

Detect with Style: A Contrastive Learning Framework for Detecting Computer-Generated Images. - Georgios Karantaidis; Constantine Kotropoulos (Inf., 2024)

Addressing Machine Learning Problems in the Non-Negative Orthant. - Ioannis Tsingalis; Constantine Kotropoulos (IEEE Trans. Emerg. Top. Comput. Intell., 2024)

On Combining Deep Neural Network Classifiers for Source Device Identification. - Ioannis Tsingalis; Constantine Kotropoulos (IEEE Access, 2025)

InterGridNet: An Electric Network Frequency Approach for Audio Source Location Classification Using Convolutional Neural Networks. - Christos Korgialas; Ioannis Tsingalis; Georgios Tzolopoulos; Constantine Kotropoulos (CoRR, 2025)

Quantized Rank Reduction: A Communications-Efficient Federated Learning Scheme for Network-Critical Applications. - Dimitrios Kritsiolis; Constantine Kotropoulos (CoRR, 2025)