Artificial Intelligence & Information Analysis

2023

  1. C. Korgialas, E. Pantraki, A. Bolari, M. Sotiroudi and C.Kotropoulos, "Face aging by explainable conditional adversarial autoencoders", Journal of Imaging, 9(5):96, 2023.

2022

  1. E. Pantraki, I. Tsingalis and C.Kotropoulos, "Cross-lingual transfer learning: A PARAFAC2 approach", Pattern Recognition Letters, pp. 167-173, 2022.
  2. M. Ntemi, I. Sarridis and C.Kotropoulos, "An Autoregressive Graph Convolutional Long-Short Term Memory Hybrid Neural Network for Accurate Prediction of COVID-19 Cases", IEEE Trans. Computational Social Systems, Early access, 2022.
  3. M. Ntemi and C.Kotropoulos, "Online hotel rating prediction through a dynamic weighted ordered probit model", Digital Signal Processing, 2022.

2021

  1. G. Karantaidis and C.Kotropoulos, "An automated approach for electric network frequency estimation in static and non-static digital video recordings", Journal of Imaging, 2021.
  2. G. Karantaidis, I. Sarridis and C.Kotropoulos, "Adaptive hypergraph learning with multi-stage optimizations for image and tag recommendation", Signal Processing: Image Communication, 2021.
  3. E. Pantraki and C.Kotropoulos, "Face aging using global and pyramid generative adversarial networks", Machine Vision and Applications , 2021.
  4. G. Karantaidis and C.Kotropoulos, "Blackman-Tukey spectral estimation and ENF matching from power mains and speech recordings", IET Signal Processing, 2021.
  5. M. Ntemi and C.Kotropoulos, "A jump-diffusion particle filter for price prediction", Signal Processing, 2021.

2020

  1. I. Tsingalis, C.Kotropoulos, D. Drosou and D.Tzovaras, "Non-negative sparse PCA: An intelligible exact approach", IEEE Trans. Emerging Topics in Computational Intelligence, 2020.
  2. F. Mandanas and C.Kotropoulos, "Subspace learning and feature selection via orthogonal mapping", IEEE Trans. Signal Processing, 2020.
  3. M. Ntemi and C.Kotropoulos, "A dynamic dyadic particle filter for price prediction", Signal Processing, February, 2020.

2018

  1. F. Mandanas and C.Kotropoulos, "M-estimators for Robust Multidimensional Scaling Employing l-2,1 norm Regularization", Pattern Recognition, vol. 73, pp. 235-246, January, 2018.

2017

  1. E. Pantraki, C.Kotropoulos and A. Lanitis, "Age Interval and Gender Prediction Using PARAFAC2 and SVMs Based on Visual and Aural Features", IET Biometrics, vol. 6, no. 4, pp. 290- 298, 2017.
  2. F. Mandanas and C.Kotropoulos, "Robust Multidimensional Scaling Using a Maximum Correntropy Criterion", IEEE Trans. Signal Processing, vol. 65, no. 4, pp. 919-932, April, 2017.

2015

  1. K. Pliakos and C.Kotropoulos, "Building an image annotation and tourism recommender system", International Journal of Artificial Intelligence Tools, DOI: 10.1142/S0218213015400217, 2015.

2014

  1. Y.Panagakis and C.Kotropoulos, "Elastic net subspace clustering applied to pop/rock music structure analysis", Pattern Recognition Letters, pp. 46-53, 2014.
  2. N.Bassiou and C.Kotropoulos, "On-line PLSA: Batch updating techniques including out of vocabulary words", IEEE Trans. Neural Networks and Learning Systems, pp. 1953-1966, November, 2014.
  3. C.Kotropoulos, "Source phone identification using sketches of features", IET Biometrics, pp. 75-83, June, 2014.
  4. Y.Panagakis, C.Kotropoulos and G.R.Arce, "Music genre classification via joint sparse low-rank representation of audio features", ACM/IEEE Trans. Audio, Speech, and Language Processing, pp. 1905-1915, December, 2014.

2013

  1. Y.Panagakis and C.Kotropoulos, "Telephone handset identification by collaborative representations", Int. Journal Digital Crime and Forensics, 2013.
  2. Y.Panagakis and C.Kotropoulos, "Music classification by low-rank semantic mappings", EURASIP Journal Audio, Speech, and Music Processing, 2013.

2011

  1. N.Bassiou and C.Kotropoulos, "RPLSA: A novel updating scheme for probabilistic latent semantic analysis", Computer, Speech and Language, vol. 25, no. 4, pp. 741-760, 2011.
  2. N.Bassiou and C.Kotropoulos, "Long distance bigram language models applied to word clustering", Pattern Recognition, vol. 44, no 1, pp. 145 - 158, 2011.

2010

  1. N.Bassiou, V.Moschou and C.Kotropoulos, "Speaker diarization exploiting the eigengap criterion and cluster ensembles", IEEE Trans. Audio, Speech, and Language Processing, vol. 18, no. 8, pp. 2134-2144, November, 2010.
  2. E.Benetos and C.Kotropoulos, "Non-negative tensor factorization applied to music genre classification", IEEE Trans. Audio, Speech, and Language Processing, vol. 18, no. 8, pp. 1955-1967, November, 2010.
  3. Y.Panagakis, C.Kotropoulos and G.R.Arce, "Non-negative multilinear principal component analysis of auditory temporal modulations for music genre classification", IEEE Trans. Audio, Speech, and Language Processing, vol. 18, no. 3, pp. 576-588, March, 2010.

2009

  1. G.Almpanidis, M.Kotti and C.Kotropoulos, "Robust Detection of Phone Boundaries Using Model Selection Criteria with Few Observations", IEEE Trans. Audio, Speech, and Language Processing, vol. 17, no. 2, pp. 287-298, February, 2009.
  2. I.Buciu, C.Kotropoulos and I.Pitas, "Comparison of ICA approaches for facial expression recognition", Signal, Image, and Video Processing, vol. 3, no. 4, pp. 1703-1711, December, 2009 (DOI: 10.1007/s11760-008-0074-3).
  3. C.Kotropoulos and G.R.Arce, "Linear discriminant classifier with reject option for the detection of vocal fold paralysis and vocal fold edema", EURASIP Advances in Signal Processing, vol. 2009, article ID 203790, 13 pages, 2009 (DOI:10.1155/2009/203790).
  4. D.Ververidis and C.Kotropoulos, "Information loss of the Mahalanobis distance in high dimensions: Applications to feature selection", IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 31, no. 12, pp. 2275-2281, December, 2009.

2008

  1. G.Almpanidis and C.Kotropoulos, "Phonemic Segmentation Using the Generalised Gamma Distribution and Small Sample Bayesian Information Criterion", Speech Communication, vol. 50, no. 1, pp. 38-55, 2008.
  2. M.Kotti, V.Moschou and C.Kotropoulos, "Speaker segmentation and clustering", Signal Processing, vol. 88, no. 5, pp. 1091-1124, May, 2008.
  3. M.Kotti, D.Ververidis, G.Evangelopoulos, Y.Panagakis, C.Kotropoulos, P.Maragos and I.Pitas, "Audio-assisted movie dialogue detection", IEEE Trans. Circuits and Systems for Video Technology, vol. 18, no. 11, pp. 1618-1627, November, 2008 (Special Issue on Event Analysis in Videos).
  4. M.Kotti, E.Benetos and C.Kotropoulos, "Computationally efficient and robust BIC-based speaker segmentation", IEEE Trans. Audio, Speech, and Language Processing, vol. 16, no. 5, pp. 920-933, July, 2008.
  5. D.Ververidis and C.Kotropoulos, "Gaussian mixture modeling by exploiting the Mahalanobis distance", IEEE Trans. Signal Processing, vol. 56, no. 7, part I, pp. 2797-2811, July, 2008.
  6. D.Ververidis and C.Kotropoulos, "Fast and accurate sequential floating forward feature selection with the Bayes classifier applied to speech emotion recognition", Signal Processing, vol. 88, no. 12, pp. 2956-2970, December, 2008.

2007

  1. G.Almpanidis, C.Kotropoulos and I.Pitas, "Combining Text and Link Analysis for Focused Crawling ? An Application for Vertical Search Engines", Information Systems, vol. 32, no. 6, pp. 886-908, 2007.
  2. N.Bassiou and C.Kotropoulos, "Color Image Histogram Equalization by Absolute Discounting Back-off", Computer Vision and Image Understanding, vol. 107, no. 1-2, pp. 108-122, 2007.
  3. Z.Cernekova, C.Kotropoulos and I.Pitas, "Video shot boundary detection using singular value decomposition and statistical tests", SPIE Journal of Electronic Imaging, vol. 16, no. 4, December, 2007.
  4. M.Kotti, E.Benetos, C.Kotropoulos and I.Pitas, "A neural network approach to audio-assisted movie dialogue detection''", Neurocomputing Special Issue: Advances in Neural Networks, vol. 71, no. 1-3, pp. 157-166, 2007.
  5. M.Kyperountas, C.Kotropoulos and I.Pitas, "Enhanced eigen-audioframes for audiovisual scene change detection", IEEE Transactions on Multimedia, vol. 9, no. 4, pp. 785-797, 2007.
  6. V.Moschou, D.Ververidis and C.Kotropoulos, "Assessment of self organizing map variants for clustering with application on redistribution of emotional speech patterns", Elsevier Neurocomputing, Special Issue: Advances on Neural Networks for Speech and Audio Processing, vol. 71, no. 1-3, pp. 147-156, 2007.

2006

  1. I.Buciu, C.Kotropoulos and I.Pitas, "Demonstrating the stability of support vector machines for classification", Signal Processing Elsevier, vol. 86, no. 9, pp. 2364 - 2380, 2006.
  2. D.Ververidis and C.Kotropoulos, "Emotional Speech Recognition: Resources, features and methods", Elsevier Speech communication, vol. 48, no. 9, September, 2006.

2004

  1. A.Georgakis, C.Kotropoulos, A.Xafopoulos and I.Pitas, "Marginal median WEBSOM for information organization and retrieval", Neural Networks, vol. 17, pp. 365-377, 2004.
  2. A.Xafopoulos, C.Kotropoulos, G.Almpanidis and I.Pitas, "Language identification in web documents using discrete HMMs", Pattern Recognition, vol. 37, pp. 583-594, 2004.

2003

  1. C.Kotropoulos and I.Pitas, "Segmentation of ultrasonic images using support vector machines", Pattern Recognition Letters, vol. 24, pp. 715-727, 2003.

2002

  1. M.Gordan, C.Kotropoulos and I.Pitas, "A support vector machine-based dynamic network for visual speech recognition applications", Journal of Applied Signal Processing, vol. 2002, no. 11, November, 2002.
  2. C.Kotropoulos, M.Pappas and I.Pitas, "Sorting networks using Lp mean comparators for signal processing applications", IEEE Transactions on Signal Processing, vol. 50, no. 11, November, 2002.
  3. A.Tefas, C.Kotropoulos and I.Pitas, "Face verification using elastic graph matching based on morphological signal decomposition", Signal Processing, vol. 82, no. 6, June, 2002.

2001

  1. A.Tefas, C.Kotropoulos and I.Pitas, "Using Support vector machines to enhance the performance of elastic graph matching for frontal face authentication", IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 23, no. 7, July, 2001.

2000

  1. C.Kotropoulos, A.Tefas and I.Pitas, "Frontal face authentication using discriminating grids with morphological feature vectors", IEEE Transactions on Multimedia, vol. 2, no. 1, March, 2000.
  2. C.Kotropoulos, A.Tefas and I.Pitas, "Frontal face authentication using morphological elastic graph matching", IEEE Transactions on Image Processing, vol. 9, no. 4, April, 2000.
  3. C.Kotropoulos, A.Tefas and I.Pitas, "Morphological elastic graph matching applied to frontal face authentication under well-controlled and real conditions", Pattern Recognition, vol. 33, no. 12, October, 2000.

1999

  1. C.Kotropoulos and I.Pitas, "Adaptive Multichannel Marginal L-filters", SPIE Optical Engineering, vol. 38, no. 4, pp. 688-704, 1999.

1998

  1. C.Kotropoulos, N.Nikolaidis, A.Bors and I.Pitas, "Robust and Adaptive Techniques in Self-organizing Neural Networks", Int. Journal of Computer Mathematics, vol. 67, pp. 183-200, 1998.
  2. S.Tsekeridou, C.Kotropoulos and I.Pitas, "Adaptive Order Statistic Filters for the Removal of Noise from Corrupted Images", SPIE Optical Engineering, vol. 37, no. 10, October, 1998.

1996

  1. E.Kofidis, S.Theodoridis, C.Kotropoulos and I.Pitas, "Nonlinear Adaptive Filters for Speckle Suppression in Ultrasonic Images", ignal Processing, Elsevier, vol. 52, no. 3, August, 1996.
  2. C.Kotropoulos and I.Pitas, "Adaptive LMS L-filters for Noise Suppression in Images", IEEE Transactions on Image Processing, vol. 5, no. 12, December, 1996.
  3. I.Pitas, C.Kotropoulos, N.Nikolaidis, R.Yang and M.Gabbouj, "Order Statistics Learning Vector Quantizer", IEEE Transactions on Image Processing, Special Issue on Nonlinear Image Processing, vol. 5, no. 6, June, 1996.

1994

  1. C.Kotropoulos, X.Magnisalis, I.Pitas and M.G.Strintzis, "Nonlinear ultrasonic image processing based on signal-adaptive filters and self-organizing neural networks", IEEE Transactions on Image Processing, vol. 3, no. 1, January, 1994.
  2. C.Kotropoulos and I.Pitas, "Multichannel L-filters based on marginal data ordering", IEEE Transactions on Signal Processing, vol. 42, no. 10, October, 1994.

1992

  1. C.Kotropoulos and I.Pitas, "Constained adaptive LMS L-filters", Signal Processing, vol. 26, no. 3, March, 1992.
  2. C.Kotropoulos and I.Pitas, "Optimum nonlinear signal detection and estimation in the presence of ultrasonic speckle", Ultrasonic Imaging, vol. 14, no. 3, July, 1992.
  3. I.Pitas and C.Kotropoulos, "A texture-based approach to the segmentation of seismic images", Pattern Recognition, vol. 25, no. 9, pp. 929-945, 1992.

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