Theodoros Giannakopoulos

100 papers A* 2A 4B 6C 7Misc 5Journal 25Unranked 50

Year	Rank	Type	Title / Venue / Authors
2025	J	`jnl`	A Principled Framework for Multi-View Contrastive Learning. CoRR Panagiotis Koromilas, Efthymios Georgiou, Giorgos Bouritsas, Theodoros Giannakopoulos, Mihalis A. Nicolaou, Yannis Panagakis
2025	J	`jnl`	Contrastive and Transfer Learning for Effective Audio Fingerprinting through a Real-World Evaluation Protocol. CoRR Christos Nikou, Theodoros Giannakopoulos
2025	—	`conf`	Elevation Data Integration Approaches for Deep Learning-Based 2-m Temperature Downscaling. DARES@ECAI Antigoni Moira, Stelios Karozis, Theodoros Giannakopoulos, Effrosyni Karakitsou, Nikolaos Gounaris, Athanasios Sfetsos
2025	—	`conf`	On the Robustness of State-of-the-Art Transformers for Sound Event Classification Against Black Box Adversarial Attacks. EUSIPCO Christos Nikou, Vasileios Theiou, Stefanos Vlachos, Christos Sgouropoulos, Dimitris Sgouropoulos, Theodoros Giannakopoulos
2025	J	`jnl`	Prototypical Contrastive Learning For Improved Few-Shot Audio Classification. CoRR Christos Sgouropoulos, Christos Nikou, Stefanos Vlachos, Vasileios Theiou, Christos Foukanelis, Theodoros Giannakopoulos
2025	—	`conf`	Prototypical Contrastive Learning for Improved Few Shot Audio Classification. MLSP Christos Sgouropoulos, Christos Nikou, Stefanos Vlachos, Vasileios Theiou, Christos Foukanelis, Theodoros Giannakopoulos
2025	J	`jnl`	REGLUE Your Latents with Global and Local Semantics for Entangled Diffusion. CoRR Giorgos Petsangourakis, Christos Sgouropoulos, Bill Psomas, Theodoros Giannakopoulos, Giorgos Sfikas, Ioannis Kakogeorgiou
2024	—	`conf`	A Self-Supervised Learning Approach for Detecting Non-Psychotic Relapses Using Wearable-Based Digital Phenotyping. ICASSP Workshops Panagiotis Kaliosis, Sofia Eleftheriou, Christos Nikou, Theodoros Giannakopoulos
2024	A*	`conf`	Bridging Mini-Batch and Asymptotic Analysis in Contrastive Learning: From InfoNCE to Kernel-Based Losses. ICML Panagiotis Koromilas, Giorgos Bouritsas, Theodoros Giannakopoulos, Mihalis Nicolaou, Yannis Panagakis
2024	J	`jnl`	Bridging Mini-Batch and Asymptotic Analysis in Contrastive Learning: From InfoNCE to Kernel-Based Losses. CoRR Panagiotis Koromilas, Giorgos Bouritsas, Theodoros Giannakopoulos, Mihalis Nicolaou, Yannis Panagakis
2024	B	`conf`	Emotion-Aware Speech Popularity Prediction: A Use-Case on TED Talks. ACII Dimitrios Sgouropoulos, Petros Mitseas, Sofia Eleftheriou, Theodoros Giannakopoulos, Antonia Petrogianni, Lefteris Kapelonis, Nikolaos Antoniou, Athanasios Katsamanis, Shrikanth Narayanan
2024	—	`conf`	Greek2MathTex: A Greek Speech-to-Text Framework for LaTeX Equations Generation. SETN Evangelia Gkritzali, Panagiotis Kaliosis, Sofia Galanaki, Elisavet Palogiannidi, Theodoros Giannakopoulos
2024	J	`jnl`	Greek2MathTex: A Greek Speech-to-Text Framework for LaTeX Equations Generation. CoRR Evangelia Gkritzali, Panagiotis Kaliosis, Sofia Galanaki, Elisavet Palogiannidi, Theodoros Giannakopoulos
2024	B	`conf`	RobuSER: A Robustness Benchmark for Speech Emotion Recognition. ACII Antonia Petrogianni, Lefteris Kapelonis, Nikolaos Antoniou, Sofia Eleftheriou, Petros Mitseas, Dimitris Sgouropoulos, Athanasios Katsamanis, Theodoros Giannakopoulos, Shrikanth Narayanan
2023	A	`conf`	Cross-Lingual Features for Alzheimer's Dementia Detection from Speech. INTERSPEECH Thomas Melistas, Lefteris Kapelonis, Nikolaos Antoniou, Petros Mitseas, Dimitris Sgouropoulos, Theodoros Giannakopoulos, Athanasios Katsamanis, Shrikanth Narayanan
2023	Misc	`conf`	Designing and Evaluating Speech Emotion Recognition Systems: A Reality Check Case Study with IEMOCAP. ICASSP Nikolaos Antoniou, Athanasios Katsamanis, Theodoros Giannakopoulos, Shrikanth Narayanan
2023	J	`jnl`	Designing and Evaluating Speech Emotion Recognition Systems: A reality check case study with IEMOCAP. CoRR Nikolaos Antoniou, Athanasios Katsamanis, Theodoros Giannakopoulos, Shrikanth Narayanan
2023	Misc	`conf`	MMATR: A Lightweight Approach for Multimodal Sentiment Analysis Based on Tensor Methods. ICASSP Panagiotis Koromilas, Mihalis A. Nicolaou, Theodoros Giannakopoulos, Yannis Panagakis
2023	—	`conf`	Smart Subs Subtitling App for Watching Live Virtual Dome Performances. SMAP Dimitrios Christopoulos, Efstathia Chatzi, Georgios Sofianopoulos, Emanuella Patiniotaki, Sofia Eleftheriou, Panagiotis Koromilas, Panagiotis Kaliosis, Nefeli Gkouti, Theodoros Giannakopoulos, Kosmas Petridis, Eleni Sismanidou
2023	C	`conf`	Unsupervised Temporal Analysis of Mouse Vocalizations. CIBCB Christodoulos Bochalis, César D. M. Vargas, Erich D. Jarvis, Theodoros Giannakopoulos
2022	J	`jnl`	A Dataset for Greek Traditional and Folk Music: Lyra. CoRR Charilaos Papaioannou, Ioannis Valiantzas, Theodoros Giannakopoulos, Maximos Kaliakatsos-Papakostas, Alexandros Potamianos
2022	B	`conf`	A Dataset for Speech Emotion Recognition in Greek Theatrical Plays. LREC Maria Moutti, Sofia Eleftheriou, Panagiotis Koromilas, Theodoros Giannakopoulos
2022	J	`jnl`	A Dataset for Speech Emotion Recognition in Greek Theatrical Plays. CoRR Maria Moutti, Sofia Eleftheriou, Panagiotis Koromilas, Theodoros Giannakopoulos
2022	B	`conf`	Audio and ASR-based Filled Pause Detection. ACII Aggelina Chatziagapi, Dimitris Sgouropoulos, Constantinos Karouzos, Thomas Melistas, Theodoros Giannakopoulos, Athanasios Katsamanis, Shrikanth Narayanan
2022	—	`conf`	Cross-linguistic speech emotion recognition using CNNs: a use-case in Greek Theatrical Data. PETRA Maria Moutti, Sofia Eleftheriou, Panagiotis Koromilas, Theodoros Giannakopoulos
2022	Misc	`conf`	Film Shot Type Classification Based on Camera Movement Styles. IbPRIA Antonia Petrogianni, Panagiotis Koromilas, Theodoros Giannakopoulos
2022	—	`conf`	Object Size Prediction from Hand Movement Using a Single RGB Sensor. HCI (35) Maria Dagioglou, Nikolaos Soulounias, Theodoros Giannakopoulos
2022	—	`conf`	Photography Style Analysis using Convolutional Neural Networks. SITIS Michael Zouros, Theodoros Giannakopoulos
2022	A*	`conf`	Real-time Feasibility of a Human Intention Method Evaluated Through a Competitive Human-Robot Reaching Game. HRI Athanasios C. Tsitos, Maria Dagioglou, Theodoros Giannakopoulos
2021	—	`conf`	Automatic Assessment of Speaking Skills Using Aural and Textual Information. ICNLSP Sofia Eleftheriou, Panagiotis Koromilas, Theodoros Giannakopoulos
2021	—	`conf`	Multimodal Workplace Monitoring for Human Activity Recognition. PCI Alexandros Mitsou, Evaggelos Spyrou, Theodoros Giannakopoulos
2021	J	`jnl`	Unsupervised Multimodal Language Representations using Convolutional Autoencoders. CoRR Panagiotis Koromilas, Theodoros Giannakopoulos
2021	J	`jnl`	Unsupervised low-rank representations for speech emotion recognition. CoRR Georgios Paraskevopoulos, Efthymios Tzinis, Nikolaos Ellinas, Theodoros Giannakopoulos, Alexandros Potamianos
2019	—	`conf`	Athens Urban Soundscape (ATHUS): A Dataset for Urban Soundscape Quality Recognition. MMM (1) Theodoros Giannakopoulos, Margarita Orfanidi, Stavros J. Perantonis
2019	A	`conf`	Data Augmentation Using GANs for Speech Emotion Recognition. INTERSPEECH Aggelina Chatziagapi, Georgios Paraskevopoulos, Dimitris Sgouropoulos, Georgios Pantazopoulos, Malvina Nikandrou, Theodoros Giannakopoulos, Athanasios Katsamanis, Alexandros Potamianos, Shrikanth Narayanan
2019	J	`jnl`	Real-Time Arm Gesture Recognition Using 3D Skeleton Joint Data. Algorithms Georgios Paraskevopoulos, Evaggelos Spyrou, Dimitrios Sgouropoulos, Theodoros Giannakopoulos, Phivos Mylonas
2019	—	`conf`	Recognizing the quality of urban sound recordings using hand-crafted and deep audio features. PETRA Theodoros Giannakopoulos, Stavros J. Perantonis
2019	A	`conf`	Unsupervised Low-Rank Representations for Speech Emotion Recognition. INTERSPEECH Georgios Paraskevopoulos, Efthymios Tzinis, Nikolaos Ellinas, Theodoros Giannakopoulos, Alexandros Potamianos
2019	C	`conf`	Using Oliver API for emotion-aware movie content characterization. CBMI Theodoros Giannakopoulos, Spiros Dimopoulos, Georgios Pantazopoulos, Aggelina Chatziagapi, Dimitris Sgouropoulos, Athanasios Katsamanis, Alexandros Potamianos, Shrikanth S. Narayanan
2018	J	`jnl`	Curriculum learning of visual attribute clusters for multi-task classification. Pattern Recognit. Nikolaos Sarafianos, Theodoros Giannakopoulos, Christophoros Nikou, Ioannis A. Kakadiaris
2018	J	`jnl`	Enhanced movie content similarity based on textual, auditory and visual information. Expert Syst. Appl. Konstantinos Bougiatiotis, Theodoros Giannakopoulos
2018	J	`jnl`	Speech-music discrimination using deep visual feature extractors. Expert Syst. Appl. Michalis Papakostas, Theodoros Giannakopoulos
2017	—	`conf`	A Fitness Monitoring System based on Fusion of Visual and Sensorial Information. PETRA Michalis Papakostas, Theodoros Giannakopoulos, Vangelis Karkaletsis
2017	J	`jnl`	Curriculum Learning for Multi-Task Classification of Visual Attributes. CoRR Nikolaos Sarafianos, Theodoros Giannakopoulos, Christophoros Nikou, Ioannis A. Kakadiaris
2017	—	`conf`	Daily Activity Recognition based on Meta-classification of Low-level Audio Events. ICT4AgeingWell Theodoros Giannakopoulos, Stasinos Konstantopoulos
2017	J	`jnl`	Deep Visual Attributes vs. Hand-Crafted Audio Features on Multidomain Speech Emotion Recognition. Comput. Michalis Papakostas, Evaggelos Spyrou, Theodoros Giannakopoulos, Giorgos Siantikos, Dimitrios Sgouropoulos, Phivos Mylonas, Fillia Makedon
2017	—	`conf`	Extracting emotions from speech using a bag-of-visual-words approach. SMAP Evaggelos Spyrou, Theodoros Giannakopoulos, Dimitrios Sgouropoulos, Michalis Papakostas
2017	—	`conf`	Towards predicting task performance from EEG signals. IEEE BigData Michalis Papakostas, Konstantinos Tsiakas, Theodoros Giannakopoulos, Fillia Makedon
2016	—	`conf`	A Low-cost Approach for Detecting Activities of Daily Living using Audio Information: A Use Case on Bathroom Activity Monitoring. ICT4AgeingWell Georgios Siantikos, Theodoros Giannakopoulos, Stasinos Konstantopoulos
2016	—	`conf`	A ROS framework for audio-based activity recognition. PETRA Theodoros Giannakopoulos, Georgios Siantikos
2016	J	`jnl`	Audio-visual speaker diarization using fisher linear semi-discriminant analysis. Multim. Tools Appl. Nikolaos Sarafianos, Theodoros Giannakopoulos, Sergios Petridis
2016	A	`conf`	Computation and communication challenges to deploy robots in assisted living environments. DATE Georgios Keramidas, Christos P. Antonopoulos, Nikolaos S. Voros, Fynn Schwiegelshohn, Philipp Wehner, Jens Rettkowski, Diana Göhringer, Michael Hübner, Stasinos Konstantopoulos, Theodoros Giannakopoulos, Vangelis Karkaletsis, Vaggelis Mariatos
2016	—	`conf`	Content Representation and Similarity of Movies based on Topic Extraction from Subtitles. SETN Konstantinos Bougiatiotis, Theodoros Giannakopoulos
2016	—	`conf`	Fusing active orientation models and mid-term audio features for automatic depression estimation. PETRA Christos Smailis, Nikolaos Sarafianos, Theodoros Giannakopoulos, Stavros J. Perantonis
2016	—	`conf`	Monitoring Activities of Daily Living Using Audio Analysis and a RaspberryPI: A Use Case on Bathroom Activity Monitoring. ICT4AgeingWell (Selected Papers) Georgios Siantikos, Theodoros Giannakopoulos, Stasinos Konstantopoulos
2016	—	`conf`	Short-Term Recognition of Human Activities Using Convolutional Neural Networks. SITIS Michalis Papakostas, Theodoros Giannakopoulos, Fillia Makedon, Vangelis Karkaletsis
2015	J	`jnl`	A Low Cost Pupillometry Approach. Int. J. E Health Medical Commun. Sergios Petridis, Theodoros Giannakopoulos, Constantine D. Spyropoulos
2015	—	`conf`	A dynamic model for environmentally safe shipping through the Aegean Sea. IISA Ioanna A. Koromila, Zoe Nivolianitou, Theodoros Giannakopoulos, Stavros J. Perantonis, Eleni Charou, Sotirios Gyftakis
2015	—	`conf`	A maritime data analytics platform for policy recommendation. IISA Sotirios Gyftakis, Theodoros Giannakopoulos, Angelos Makrygiorgos, Eleni Charou, Stavros J. Perantonis, Ioanna A. Koromila, Zoe Nivolianitou
2015	—	`conf`	A multimodal adaptive dialogue manager for depressive and anxiety disorder screening: a Wizard-of-Oz experiment. PETRA Konstantinos Tsiakas, Lynette Watts, Cyril Lutterodt, Theodoros Giannakopoulos, Alexandros Papangelis, Robert Gatchel, Vangelis Karkaletsis, Fillia Makedon
2015	—	`conf`	A two-step identification method for human-robot interaction in assistive environments. PETRA Alexandros Lioulemes, Nikolaos Sarafianos, Theodoros Giannakopoulos, Vangelis Karkaletsis
2015	—	`conf`	Automatic soundscape quality estimation using audio analysis. PETRA Theodoros Giannakopoulos, Giorgos Siantikos, Stavros J. Perantonis, Nefta-Eleftheria Votsi, John Pantis
2015	—	`conf`	Counting and tracking people in a smart room: An IoT approach. SMAP Dimitris Sgouropoulos, Evaggelos Spyrou, Giorgos Siantikos, Theodoros Giannakopoulos
2015	—	`conf`	Exploiting future internet technologies: the smart room case. PETRA Charilaos Akasiadis, Evaggelos Spyrou, Georgios Pierris, Dimitris Sgouropoulos, Giorgos Siantikos, Alexandros Mavrommatis, Costas Vrakopoulos, Theodoros Giannakopoulos
2015	C	`conf`	Fusing multiple audio sensors for acoustic event detection. ISPA Giorgos Siantikos, Dimitris Sgouropoulos, Theodoros Giannakopoulos, Evaggelos Spyrou
2015	—	`conf`	Robots in Assisted Living Environments as an Unobtrusive, Efficient, Reliable and Modular Solution for Independent Ageing: The RADIO Perspective. ARC Christos P. Antonopoulos, Georgios Keramidas, Nikolaos S. Voros, Michael Hübner, Diana Göhringer, Maria Dagioglou, Theodoros Giannakopoulos, Stasinos Konstantopoulos, Vangelis Karkaletsis
2015	—	`conf`	Use of Sentinel-1 data for Maritime Domain Awareness: Preliminary results. IISA Eleni Charou, Emmanuel Bratsolis, Sotirios Gyftakis, Theodoros Giannakopoulos, Stavros J. Perantonis
2015	C	`conf`	Visual sentiment analysis for brand monitoring enhancement. ISPA Theodoros Giannakopoulos, Michalis Papakostas, Stavros J. Perantonis, Vangelis Karkaletsis
2015	—	`conf`	Visual-Based Classification of Figures from Scientific Literature. WWW (Companion Volume) Theodoros Giannakopoulos, Ioannis Foufoulas, Elefterios Stamatogiannakis, Harry Dimitropoulos, Natalia Manola, Yannis E. Ioannidis
2014	—	`conf`	AMINESS: a platform for environmentally safe shipping. PETRA Theodoros Giannakopoulos, Ioannis A. Vetsikas, Ioanna A. Koromila, Vangelis Karkaletsis, Stavros J. Perantonis
2014	—	`conf`	Bayesian network to predict environmental risk of a possible ship accident. PETRA Ioanna A. Koromila, Zoe Nivolianitou, Theodoros Giannakopoulos
2014	—	`conf`	Clothes Change Detection Using the Kinect Sensor. SIGMAP Dimitris Sgouropoulos, Theodoros Giannakopoulos, Sergios Petridis, Stavros J. Perantonis, Antonis Korakis
2014	—	`conf`	Detection of Clothes Change Fusing Color, Texture, Edge and Depth Information. ICETE (Selected Papers) Dimitrios Sgouropoulos, Theodoros Giannakopoulos, Giorgos Siantikos, Evaggelos Spyrou, Stavros J. Perantonis
2014	—	`conf`	Discovering Similarities for Content-Based Recommendation and Browsing in Multimedia Collections. SITIS Taras Lehinevych, Nikolaos Kokkinis-Ntrenis, Giorgos Siantikos, A. Seza Dogruöz, Theodoros Giannakopoulos, Stasinos Konstantopoulos
2014	J	`jnl`	Discovering and Visualizing Interdisciplinary Content Classes in Scientific Publications. D Lib Mag. Theodoros Giannakopoulos, Ioannis Foufoulas, Elefterios Stamatogiannakis, Harry Dimitropoulos, Natalia Manola, Yannis E. Ioannidis
2014	—	`conf`	Realtime depression estimation using mid-term audio features. AI-AM/NetMed@ECAI Theodoros Giannakopoulos, Christos Smailis, Stavros J. Perantonis, Constantine D. Spyropoulos
2013	—	`conf`	Content Visualization of Scientific Corpora Using an Extensible Relational Database Implementation. TPDL Workshops Theodoros Giannakopoulos, Elefterios Stamatogiannakis, Ioannis Foufoulas, Harry Dimitropoulos, Natalia Manola, Yannis E. Ioannidis
2013	—	`conf`	Supervised Content Visualization of Scientific Publications: A Case Study on the ArXiv Dataset. IIS Theodoros Giannakopoulos, Harry Dimitropoulos, Omiros Metaxas, Natalia Manola, Yannis E. Ioannidis
2013	J	`jnl`	Unobtrusive Low Cost Pupil Size Measurements using Web cameras. CoRR Sergios Petridis, Theodoros Giannakopoulos, Constantine D. Spyropoulos
2012	—	`conf`	Detection and clustering of musical audio parts using Fisher linear semi-discriminant analysis. EUSIPCO Theodoros Giannakopoulos, Sergios Petridis
2012	J	`jnl`	Fisher Linear Semi-Discriminant Analysis for Speaker Diarization. IEEE Trans. Speech Audio Process. Theodoros Giannakopoulos, Sergios Petridis
2011	J	`jnl`	Multimodal and ontology-based fusion approaches of audio and visual processing for violence detection in movies. Expert Syst. Appl. Thanassis Perperis, Theodoros Giannakopoulos, Alexandros Makris, Dimitrios I. Kosmopoulos, Sofia Tsekeridou, Stavros J. Perantonis, Sergios Theodoridis
2010	—	`conf`	A Multi-class Method for Detecting Audio Events in News Broadcasts. SETN Sergios Petridis, Theodoros Giannakopoulos, Stavros J. Perantonis
2010	B	`conf`	A Multimodal Approach to Violence Detection in Video Sharing Sites. ICPR Theodoros Giannakopoulos, Aggelos Pikrakis, Sergios Theodoridis
2010	—	`conf`	Audio-Visual Fusion for Detecting Violent Scenes in Videos. SETN Theodoros Giannakopoulos, Alexandros Makris, Dimitrios I. Kosmopoulos, Stavros J. Perantonis, Sergios Theodoridis
2010	C	`conf`	Unsupervised Speaker Clustering in a Linear Discriminant Subspace. ICMLA Theodoros Giannakopoulos, Sergios Petridis
2010	—	`conf`	User-driven recognition of audio events in news videos. SMAP Theodoros Giannakopoulos, Sergios Petridis, Stavros J. Perantonis
2009	Misc	`conf`	A dimensional approach to emotion recognition of speech from movies. ICASSP Theodoros Giannakopoulos, Aggelos Pikrakis, Sergios Theodoridis
2009	—	`—`	Study and application of acoustic information for the detection of harmful content and fusion with visual information Theodoros Giannakopoulos
2008	J	`jnl`	A Speech/Music Discriminator of Radio Recordings Based on Dynamic Programming and Bayesian Networks. IEEE Trans. Multim. Aggelos Pikrakis, Theodoros Giannakopoulos, Sergios Theodoridis
2008	B	`conf`	A novel efficient approach for audio segmentation. ICPR Theodoros Giannakopoulos, Aggelos Pikrakis, Sergios Theodoridis
2008	Misc	`conf`	Gunshot detection in audio streams from movies by means of dynamic programming and Bayesian networks. ICASSP Aggelos Pikrakis, Theodoros Giannakopoulos, Sergios Theodoridis
2008	C	`conf`	Music tracking in audio streams from movies. MMSP Theodoros Giannakopoulos, Aggelos Pikrakis, Sergios Theodoridis
2007	C	`conf`	A Multi-Class Audio Classification Method With Respect To Violent Content In Movies Using Bayesian Networks. MMSP Theodoros Giannakopoulos, Aggelos Pikrakis, Sergios Theodoridis
2007	—	`conf`	A dynamic programming approach to speech/music discrimination of radio recordings. EUSIPCO Aggelos Pikrakis, Theodoros Giannakopoulos, Sergios Theodoridis
2006	—	`conf`	A Speech/Music Discriminator for Radio Recordings Using Bayesian Networks. ICASSP (5) Theodoros Giannakopoulos, Aggelos Pikrakis, Sergios Theodoridis
2006	—	`conf`	A computationally efficient speech/music discriminator for radio recordings. ISMIR Aggelos Pikrakis, Theodoros Giannakopoulos, Sergios Theodoridis
2006	—	`conf`	Speech/music discrimination for radio broadcasts using a hybrid HMM-Bayesian Network architecture. EUSIPCO Aggelos Pikrakis, Theodoros Giannakopoulos, Sergios Theodoridis
2006	—	`conf`	Violence Content Classification Using Audio Features. SETN Theodoros Giannakopoulos, Dimitrios I. Kosmopoulos, Andreas Aristidou, Sergios Theodoridis
2005	J	`jnl`	A practical, real-time speech-driven home automation front-end. IEEE Trans. Consumer Electron. Theodoros Giannakopoulos, Nicolas-Alexander Tatlas, Todor Ganchev, Ilyas Potamitis