Books

Anagnostopoulos I., Mylonas P., Tsapatsoulis N. (eds): Semantic Hyper/Multimedia Adaptation: Schemes and Applications. Springer, vol. 418, ISBN: 978-3-642-28976-7 (Print) 978-3-642-28977-4 (Online), 2013 [http://dx.doi.org/10.1007/978-3-642-28977-4].

Tzanavari A., Tsapatsoulis N. (eds): Affective, Interactive, and Cognitive Methods for E-learning Design: Creating an Optimal Education Experience. Information Science Publishing, ISBN: 978-1605669403, January 2010.

International Journals

2019

S. Giannoulakis, N. Tsapatsoulis
Filtering Instagram hashtags through crowdtagging and the HITS algorithm, IEEE Transactions on Computational Social Systems, 6(3), pp. 592-603, June 2019, DOI: 10.1109/TCSS.2019.2914080

N. Tsapatsoulis, C. Djouvas
Opinion mining from social media short texts: Does collective intelligence beat deep learning?, Frontiers in Robotics and AI, vol. 5, article 138, January 2019, DOI: 10.3389/frobt.2018.00138 [|link|]
 

2018

K. Ntalianis, A. Doulamis, N. Tsapatsoulis, N. Mastorakis
Social Relevance Feedback Based on Multimedia Content Power, IEEE Transactions on Computational Social Systems, 5(1), pp. 109-117, March 2018, DOI: 10.1109/TCSS.2017.2766250 [|link|]
 

2017

A. Lanitis, N. Tsapatsoulis
Guest Editorial, IET Biometrics, 6(4), pp. 243-244 [|link|]

A. Lanitis, N. Tsapatsoulis
An Integrated Framework for Evaluating the Performance of Age Progression Algorithms, International Journal of Biometrics, 9(3), pp. 163-185 [|link|]
 

2016

M. Agathokleous, N. Tsapatsoulis
Applying Hidden Markov Models to Voting Advice Applications, EPJ Data Science, 5:34, DOI: 10.1140/epjds/s13688-016-0095-z, December 2016 [|link|], [|Video on YouTube|]

K. Ntalianis, N. Tsapatsoulis
Remote Authentication via Biometrics: A Robust Video-Object Steganographic Mechanism Over Wireless Networks, Research paper summary, IEEE Biometrics Council Newsletter, vol.20, 2016 [|link|]

C. Djouvas, F. Mendez, N. Tsapatsoulis
Mining online political opinion surveys for suspect entries: An interdisciplinary comparison, Journal of Innovation in Digital Ecosystems, 3(2), pp. 172-182 [|link|]

S. Giannoulakis, N. Tsapatsoulis
Evaluating the descriptive power of Instagram hashtags, Journal of Innovation in Digital Ecosystems, 3(2), pp. 114-129, December 2016 [|link|]

K. Ntalianis, N. Tsapatsoulis
Remote Authentication via Biometrics: A Robust Video-Object Steganographic Mechanism Over Wireless Networks, IEEE Transactions on Emerging Topics in Computing, 4(1), pp. 156-174, Jan. - March 2016 (DOI: 10.1109/TETC.2015.2400135) [|link|]

G. Panis, A. Lanitis, N. Tsapatsoulis, T. Cootes, An Overview of Research on Facial Aging using the FG-NET Aging Database, IET Biometrics, 5(2), pp. 37–46, June 2016, DOI:10.1049/iet-bmt.2014.0053 [|link|]
 

2015

N. Tsapatsoulis, M. Agathokleous, C. Djouvas, F. Mendez
On the design of Social Voting Recommendation Applications, International Journal on Artificial Intelligence Tools, 24(3), June 2015.
 

2014

I. Katakis, N. Tsapatsoulis, F. Mendez, V. Triga, C. Djouvas
Social Voting Advice Applications - Definitions, Challenges, Datasets and Evaluation, IEEE Transactions on Cybernetics, 44(7), pp. 1039-1052 [|link|]

K. Ntalianis, N. Tsapatsoulis, A. Doulamis, N. Matsatsinis
Automatic annotation of image databases based on implicit crowdsourcing, visual concept modeling and evolution, Multimedia Tools and Applications, 69(2), pp.397-421, March 2014
[|link|]
 

2013

Z. Theodosiou, N. Tsapatsoulis
Attention-based Health Monitoring, International Journal of Monitoring and Surveillance Technologies Research (IJMSTR), 1,(3), DOI: 10.4018/ijmstr.2013070105 [|link|]
 

2012

N. Tsapatsoulis, O. Georgiou
Investigating the Scalability of Algorithms, the Role of Similarity Metric and the List of Suggested Items Construction Scheme in Recommender Systems, International Journal on Artificial Intelligence Tools, vol. 21, issue 4, August 2012 [|link|]

 

2011

A. Lanitis, N. Tsapatsoulis
Quantitative Evaluation of the Effects of Aging on Biometric Templates, IET Computer Vision, vol. 5, issue 6, pp. 338-347, November 2011,

K. Ntalianis, N. Tsapatsoulis, A. Drigas
Video-Object Oriented Biometrics Hiding for User Authentication under Error-Prone Transmissions, EURASIP Journal on Information Society, Volume 2011 (2011), Article ID 174945, January 2011, [|pdf|]
 

2010

K. Ntalianis, A. Doulamis, N. Tsapatsoulis, N. Doulamis
Human Action Annotation, Modeling and Analysis based on Implicit User Interaction, Multimedia Tools and Applications, vol. 50, no.1, pp. 199-225, October 2010. [|pdf|]
 

2009

K. Rapantzikos, N. Tsapatsoulis, Y. Avrithis, S. Kollias
Spatiotemporal saliency for video classification, Signal Processing: Image Communication, vol. 24, issue 7, pp. 557-571, August 2009. [|pdf|]
 

2008

D. Vogiatzis, N. Tsapatsoulis
Active Learning for Microarray data, International Journal of Approximate Reasoning, vol. 47, issue 1, pp. 85-96, January 2008. [|pdf|]
 

2007

N. Tsapatsoulis, K. Rapantzikos, C. S. Pattichis
An Embedded Saliency Map Scheme: Application to Video Encoding, International Journal of Neural Systems, vol. 17, no. 4, pp. 289-304, August 2007. [|pdf|]

K. Rapantzikos, N. Tsapatsoulis, Y. Avrithis, S. Kollias
A Saliency-based Spatiotemporal Visual Attention Model for Video Analysis, IET Image Processing, vol. 1, no. 2, pp. 237- 248, June 2007. [|pdf|]
 

2006

K. Rapantzikos, N. Tsapatsoulis
A committee machine scheme for feature map fusion under uncertainty: the face detection case, International Journal of Intelligent Systems Technologies and Applications, vol. 1, no. 3/4, pp. 346-358, 2006. [|pdf|]
 

2005

M. Wallace, N. Tsapatsoulis, S. Kollias
Intelligent Initialization of Resource Allocating RBF Networks, Neural Networks 18 (2), pp. 117-122, 2005. [|pdf|]
 

2004

G. Tsechpenakis, K. Rapantzikos, N. Tsapatsoulis, S. Kollias
Rule-driven Object Tracking in Clutter and Partial Occlusion with Model-based Snakes, EURASIP Journal on Applied Signal Processing, vol. 2004, no. 6, pp. 841-860, June 2004. [|pdf|]

G. Tsechpenakis, K. Rapantzikos, N. Tsapatsoulis, S. Kollias
A Snake Model for Object Tracking in Natural Sequences, Signal Processing: Image Communication, vol. 19, issue 3, pp. 219-238, March 2004. [|pdf|]

G. Tsechpenakis, N. Tsapatsoulis, S. Kollias
Probabilistic Boundary-Based Contour Tracking with Snakes in Natural Cluttered Video Sequences, International Journal of Image and Graphics, vol. 4, no. 3, pp. 469-498, 2004. [|pdf|]
 

2002

A. Raouzaiou, N. Tsapatsoulis, K. Karpouzis, S. Kollias,
Parameterized facial expression synthesis based on MPEG-4, EURASIP Journal on Applied Signal Processing, vol. 2002, no 10, pp. 1021-1038, 2002. [|pdf|]
 

2001

N. Tsapatsoulis, Y. Avrithis, S. Kollias
Facial Image Indexing in Multimedia Databases,
Pattern Analysis and Applications, vol. 4, issue 2/3, pp 93-107, 2001. [|pdf|]

R. Cowie, E. Douglas-Cowie, N. Tsapatsoulis, G. Votsis, S. Kollias, W. Fellenz, J. Taylor
Emotion Recognition in Human-Computer Interaction, IEEE Signal Processing Magazine, no. 1, pp.32-80, January 2001. [|pdf|]
 

2000

K. Karpouzis, N. Tsapatsoulis, A. Raouzaiou, G. Mosxovitis, S. Kollias
Enhancing Nonverbal Human Computer Interaction with Expression Recognition, ACM SIGCAPH Bulletin, ACM Press, NY, USA, issue 67, pp. 1-9, June 2000. [|pdf|]

F. Schnorrenberg, N. Tsapatsoulis, C. Pattichis, C. Schizas, S. Kollias, M. Vassiliou, K. Kyriacou
Improved Detection of Breast Cancer Nuclei using Modular Neural Networks, IEEE Engineering in Medicine and Biology, vol. 19, no.1, pp. 49-63, January / February 2000. [|pdf|]
 

1998

K. Karpouzis, G. Votsis, N. Tsapatsoulis, S. Kollias
Compact 3D Model Generation based on 2D Views of Human Faces: Application to Face Recognition, Machine Graphics & Vision, vol. 7, no 1/2, pp. 75-85, 1998. [|pdf|]

Book Chapters

2014

Z. Theodosiou, N. Tsapatsoulis
Image Retrieval Using Keywords: The Machine Learning Perspective, in Semantic Multimedia Analysis and Processing, Ed. by E. Spyrou, D. Iakovides, P. Mylonas, CRC Press / Taylor & Francis, June 2014, pp. 3 -30. [|book link|]
 

2013

A. Lanitis, N. Tsapatsoulis, A. Maronidis
Review Of Ageing With Respect To Biometrics And Diverse Modalities, in Age Factors in Biometric Processing, Ed. by M. Fairhust, The Institution of Engineering and Technology, 2013, pp. 17 -36. [|book link|]
 

2009

A. Kounoudes, N. Tsapatsoulis, Z. Theodosiou, M. Milis
POLYBIO: Multimodal Biometric Data Acquisition Platform and Security System, in Biometrics and Identity Management, Ed. by B. Schouten, N. C. Juul, A. Drygajlo, M. Tistarelli, Spinger-Verlag, 2009, pp. 216-227. [|pdf|]

 

2007

N. Tsapatsoulis, S. Kasderidis, J. G. Taylor
An Attention-based Architecture for Context Switch Detection, in The Disappearing Computer, Ed. by N. Streitz, A. Kameas, I. Mavrommati, Spinger-Verlag, 2007, pp. 205-229. [|pdf|]

C.S. Pattichis, F. Schnorrenberg, N. Tsapatsoulis, C.N. Schizas, M. Pattichis, K. Kyriacou
A Biopsy Analysis Support System for the Detection and Classification of Breast Cancer Nuclei, in Emerging Technologies in Breast Imaging and its Applications, Ed. by J.S. Suri, R. Rangayan, S. Laxminarayan, American Scientific Publishers, 2007. [|pdf|]
 

2006

K. Karpouzis, A. Drosopoulos, S. Ioannou, A. Raouzaiou, N. Tsapatsoulis, S. Kollias
An overview of Facial Expression and Gesture Analysis for Emotionally-rich Man-machine Interaction, Encyclopedia of Information Science and Technology, Mehdi Khosrow-Pour (ed.), Volume I-III, Idea Group Publ., 2006.
 

2005

K. Karpouzis, A. Raouzaiou, A. Drosopoulos, T. Balomenos, N. Tsapatsoulis, S.Kollias, R. Cowie
Facial Expression and Gesture Analysis for Emotionally-rich Man-Machine Interaction, 3D Modeling and Animation: Synthesis and Analysis Techniques for the Human Body, N. Sarris and M. G. Strintzis (eds), Idea-Group Inc., 2005
 

2002

N. Tsapatsoulis, A. Raouzaiou, S. Kollias, R. Cowie and E. Douglas-Cowie
Emotion Recognition and Synthesis based on MPEG-4 FAPs, MPEG-4 Facial Animation, Chapter 9, Igor Pandzic, R. Forchheimer (eds), John Wiley & Sons, UK, 2002. [|pdf|]

M. Pertselakis, N. Tsapatsoulis
An Intelligent Agent based Approach for Service Discovery in Wireless Ad-hoc Networks, Advances in Communications and Software Technologies, World Scientific and Engineering Society Press, pp. 134-139, 2002. [|pdf|]
 

1999

M. Leonidou, N. Tsapatsoulis, S. Kollias
Face Recognition based on Multiple Representations: Splitting the Error Space Advances in Intelligent Systems – Concepts Tools and Applications, PART III: Image Processing and Video Based Systems, Kluwer Academic Publishers, 1999

W. Fellenz, J. Taylor, N. Tsapatsoulis, S. Kollias
Comparing Template-based, Feature-based and Supervised Classification of Facial Expressions from Static Images, Computational Intelligence and Applications, World Scientific and Engineering Society Press, 1999.

Conference Proceedings

2019

N. Tsapatsoulis, V. Anastasopoulou, K. Ntalianis
The central community of Twitter ego-networks as a means for fake influencer detection, Proceedings of the 4th IEEE Cyber Science and Technology Congress (CyberSciTech 2019), pp. 177-184, Fukuoka, Japan, August 2019.

N. Tsapatsoulis, V. Anastasopoulou
Cyberbullies in Twitter: A Focused Review, Proceedings of the 14th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP 2019), pp. xx-yy, Larnaca, Cyprus, June 2019.

Th. Anagnostopoulos, K. Ntalianis, N. Tsapatsoulis
IoT-enabled Ambulances Assisting Citizens' Well-being after Earthquake Disasters in Smart Cities, Proceedings of the 12th IEEE International Conference on Internet of Things (iThings-2019 ), pp. xx-yy, Atlanta, USA, July 2019.

2018

A. Argyrou, S. Giannoulakis, N. Tsapatsoulis
Topic modelling on Instagram hashtags: An alternative way to Automatic Image Annotation?, Proceedings of the 13th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP 2018 ), pp. 61-67, Zaragoza, Spain, September 2018.

C. Djouvas, A. Antoniou, N. Tsapatsoulis
Improving Social Vote Recommendation in VAAs: The effects of political profile augmentation and classification method, Proceedings of the 13th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP 2018 ), pp. 1-6, Zaragoza, Spain, September 2018.

S. Zenonos, A. Tsirtsis, N. Tsapatsoulis
Twitter Influencers or Cheated Buyers?, Proceedings of the 3rd IEEE Cyber Science and Technology Congress (CyberSciTech 2018 ), pp. 236-242, Athens, Greece, August 2018.

S. Giannoulakis, N. Grammalidis, N. Tsapatsoulis
Metadata for intangible cultural heritage: the case of folk dances, Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018), pp. 634-645, Funchal, Madeira - Portugal, January 2018.

2017

S. Giannoulakis, N. Tsapatsoulis, K. Ntalianis
Identifying image tags from Instagram hashtags using the HITS algorithm, Proceedings of the IEEE CyberSciTech 2017, pp. 89-94, Orlando, Florida, November 2017.

N. Tsapatsoulis, C. Djouvas
Feature extraction for tweet classification: Do the humans perform better?, Proceedings of the 12th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP 2017), pp. 53-58, Bratislava, Slovakia, July 2017.

N. Tsapatsoulis, M. Agathokleous
Forecasting elections from VAA data: What the undecided would vote?, Proceedings of the 12th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP 2017), pp. 46-52, Bratislava, Slovakia, July 2017.

K. Ntalianis, N. Tsapatsoulis
Multiresolution Organization of Social Media Users’ Profiles: Fast Detection and Efficient Transmission of Characteristic Profiles, Proceedings of the 10th IEEE International Conference on Cyber, Physical, and Social Computing (CPSCom'2017), pp. 37-43, Exeter, England, UK, June 2017.

Νίκος Γραμμαλίδης, Σταμάτιος Γιαννουλάκης, Νικόλας Τσαπατσούλης, Στέφανος Καμαρινόπουλος, Παναγιώτης Μπαρμπούτης, Κοσμάς Δημητρόπουλος, Αναστάσιος Δουλάμης
Ένα ολιστικό σχήμα περιγραφής δεδομένων καταγραφής παραδοσιακών χορών για την προστασία, μετάδοση και ανάπτυξη νέων εφαρμογών, Πρακτικά 2ου Πανελλήνιου Συνεδρίου Ψηφιοποίησης Πολιτιστικής Κληρονομιάς, Βόλος, Ελλάδα, Δεκέμβριος 2017.

2016

K. Ntalianis, N. Tsapatsoulis
Wall-Content Selection in Social Media: A Revelance Feedback Scheme based on Explicit Crowdsourcing, Proceedings of the 9th IEEE International Conference on Cyber, Physical, and Social Computing (CPSCom'2016), pp. 534-539, Chengdu, China, December 2016 (best paper award of CPSCom'2016).

A. Tsirtsis, N. Tsapatsoulis, M. Stamatelatos, K. Papadamou, M. Sirivianos
Cyber Security Risks for Minors: A Taxonomy and a Software Architecture, Proceedings of the 11th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP 2016), pp. 93-99, Thessaloniki, Greece, October 2016.

S. Giannoulakis, N. Tsapatsoulis
Defining and identifying stophashtags in Instagram, Proceedings of the 2nd INNS Conference on Big Data 2016 (INNS Big Data 2016), pp. 304-313, Thessaloniki, Greece, October 2016.

M. Agathokleous, N. Tsapatsoulis, C. Djouvas
Estimating party-user similarity in Voting Advice Applications using Hidden Markov Models, Proceedings of the 2016 Joint Workshop on Interfaces and Human Decision Making for Recommender Systems at RecSys'16 (10th ACM Conference on Recommender Systems), pp. 6-13, Boston, MA, USA, September 2016 [|link|].

N. Tsapatsoulis
Web Image Indexing using WICE and a learning-free Language Model. In L. Iliadis and I. Maglogiannis (Eds.): AIAI 2016, IFIP AICT 475, pp. 131–140, 2016. DOI: 10.1007/978-3-319-44944-9_12 ( also in Proceedings of the 12th IFIP International Conference on
Artificial Intelligence Applications and Innovations (AIAI 2016), pp. 131-140, Thessaloniki, Greece, September 2016) [|link|].

A. Lanitis, N. Tsapatsoulis
On the Analysis of Factors Influencing the Performance of Facial Age Progression, Proceedings of the 4th International Workshop on Biometrics and Forensics (IWBF 2016), pp. xx-yy, Limassol, Cyprus, March 2016.

2015

K. Ntalianis, N. Tsapatsoulis
Unsupervised Sports Video Particles Annotation Based on Social Latent Semantic Analysis, Proceedings of the 2015 International Conference on Image Processing (ICIP'15), pp. 222-226, Quebec, Canada, September 2015.

S. Giannoulakis, N. Tsapatsoulis
Instagram hashtags as image annotation metadata, Proceedings of the 11th International Conference on Artificial Intelligence Applications and Innovations (AIAI'15), pp. 206-220, Bayonne/Biarritz, France, September 2015.

A. Lanitis, N. Tsapatsoulis, K. Soteriou, D. Kuwahara, S. Morishima
FG2015 Age Progression Evaluation, Proceedings of the 11th IEEE International Conference on Automatic Face and Gesture Recognition (FG 2015), Ljubljana, Slovenia, May 2015.

2014

N. Tsapatsoulis, F. Mendez
Social vote recommendation: Building party models using the probability to vote feedback of VAA users, Proceedings of the 9th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP'14), pp. 124 -129, Corfu, Greece, November 2014

C. Djouvas, N. Tsapatsoulis
A View Behind the Scene: Data Structures and Software Architecture of a VAA, Proceedings of the 9th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP'14), pp. 136 -141, Corfu, Greece, November 2014

A. Lanitis, N. Tsapatsoulis
Assessing Facial Age Similarity: A Framework for Evaluating the Robustness of Different Feature Sets, Proceedings of the 2014 International Conference of the Biometrics Special Interest Group (BIOSIG 2014) , pp. 251 - 258, Darmstadt, Germany, September 2014.

M. Agathokleous, N. Tsapatsoulis
Learning User Models in Multi-criteria Recommender Systems, Proceedings of the 15th International Conference on Engineering Applications of Neural Networks (EANN 2014), pp. 205 - 216, Sofia, Bulgaria, September 2014.

A. Lanitis, N. Tsapatsoulis, A. Maronidis
On the Application of Biometric Techniques for Locating Damaged Artworks, Proceedings of the BIOMET 2014 International Workshop on Biometrics , pp. 246 - 257, Sofia, Bulgaria, June 2014.

A. Lanitis, N. Tsapatsoulis
Lessons Learned from the Application of Biometric-tests on a Real Case Involving Identity Verification of a Missing Child, Proceedings of the 2nd International Workshop on Biometrics and Forensics (IWBF 2014), pp. 1 - 6, Valetta, Malta, March 2014 [|link|].

2013

P. Kaimakis, N. Tsapatsoulis
Background Modeling Methods for Visual Detection of Maritime Targets, Proceedings of the 4th ACM/IEEE ARTEMIS 2013 International Workshop on Analysis and Retrieval of Tracked Events and Motion in Imagery Streams (in conjunction with ACM Multimedia 2013), pp. 67 - 76, Barcelona, Spain, October 2013.

Z. Theodosiou, N. Tsapatsoulis
Spatial Histogram of Keypoints, Proceedings of the 2013 IEEE International Conference on Image Processing (ICIP 2013), pp. 2924-2928, Melbourne, Australia, September 2013 [pdf].

K. Ntalianis, A. Doulamis, N. Doulamis, N. Tsapatsoulis
Video Abstraction in Social Media: Augmenting Facebooks’s EdgeRank Algorithm in Video Content Presentation, Proceedings of the 2013 IEEE International Conference on Image Processing (ICIP 2013), pp. 2684-2688, Melbourne, Australia, September 2013 [pdf].

M. Agathokleous, N. Tsapatsoulis, I. Katakis
On the quantification of missing value impact on Voting Advice Applications. L. Iliadis, H. Papadopoulos, and C. Jayne (Eds.): EANN 2013, Part I, CCIS 383, pp. 496–505, Springer Berlin Heidelberg 2013 [link].

K. Raftopoulos, K. Ntalianis, P. Tzouveli, N. Tsapatsoulis, A. Parker-Wood, M. Ferecatu
Watermark Resynchronization: An Efficient Approach Based on Eulerian Tours around a Robust Skeleton. Lecture Notes in Computer Science, Volume 8099/2013, pp 211-214, Springer Berlin Heidelberg 2013 (Proceedings of the 14th Joint IFIP TC6 and TC11 Conference on Communications and Multimedia Security - CMS 2013, Magdeburg, Germany, September 2013) [link].

M. Agathokleous, N. Tsapatsoulis
Voting Advice Applications: Missing value estimation using matrix factorization and collaborative filtering, IFIP Advances in Information and Communication Technology, Volume 412/2013, pp. 20-29, Springer Berlin Heidelberg 2013 (Proceedings of the 9th International Conference on Artificial Intelligence Applications and Innovations - AIAI 2013, Paphos, Cyprus, September 2013) [link].

2012

I. Katakis, N. Tsapatsoulis, V. Triga, C. Tziouvas, F. Mendez
Clustering Online Poll Data: Towards a Voting Assistance System, Proceedings of the 7th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP'12), pp. 54-59, Luxembourg, December 2012 [ link ].

G. Tryfou, Z. Theodosiou, N. Tsapatsoulis
Web image context extraction based on semantic representation of web page visual segments, Proceedings of the 7th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP'12), pp. 63-67, Luxembourg, December 2012 [ link ].

Z. Theodosiou, C. Kasapi, N. Tsapatsoulis
Semantic Gap Between People: An Experimental Investigation based on Image Annotation, Proceedings of the 7th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP'12), pp. 73-77, Luxembourg, December 2012 [ link ].

K. Ntalianis, E. Sardis, N. Tsapatsoulis, A. Doulamis, P. Rizomiliotis
Multiocular Surveilance of Wide Dynamic Environments Based on Optical Vision, Event
Modelling and End-to-End Data Encryption, Proceedings of the first International Workshop on Management and Security technologies for Cloud Computing 2012 (ManSec-CC 2012), in conjunction with the 2012 IEEE GlobeCom, pp. , Anaheim, California, USA, December 2012.

A. Doulamis, E. Sardis, N. Tsapatsoulis, K. Ntalianis, N. Matsatsinis
Computer vision based sea borders surveillance, Proceedings of Applied Computing 2012 (AC'12), pp. , Madrid, Spain, October 2012.

Z. Theodosiou, N. Tsapatsoulis
Modelling crowdsourcing originated keywords within the athletics domain, Proceedings of the 8th International Conference on Artificial Intelligence Applications and Innovations (ΑΙΑΙ '12), pp. 404-413, Chalkidiki, Greece, September 2012 [ link ].

G. Tryfou, N. Tsapatsoulis
Extraction of web image information: semantic or visual cues?, Proceedings of the 8th International Conference on Artificial Intelligence Applications and Innovations (ΑΙΑΙ '12), pp. 368-373, Chalkidiki, Greece, September 2012 [ link ].

G. Tryfou, N. Tsapatsoulis
Using Visual Cues for the Extraction of Web Image Semantic Information, Proceedings of the 2012 International Conference on Theory and Practice of Digital Libraries (TPDL 2012), pp. 396-401, Paphos, Cyprus, September 2012.

G. Tryfou, N. Tsapatsoulis
Image indexing based on web page segmentation and clustering, Proceedings of the 11th International Conference on Applications of Computer Engineering (ACE '12), pp. 90-95, Athens, Greece, March 2012 [ pdf ] (best paper award of ACE'12)

Z. Theodosiou, N. Tsapatsoulis
On the creation of visual models for keywords through crowdsourcing, Proceedings of the 11th International Conference on Applications of Computer Engineering (ACE '12), pp. 96-100, Athens, Greece, March 2012 [ pdf ]

2011

Z. Theodosiou, N. Tsapatsoulis
Crowdsourcing Annotation: Modelling keywords using low level features, Proceedings of the 5th International Conference on Internet Multimedia Systems Architecture and Application (IEEE IMSAA 11), Bangalore, India, December 2011

Z. Theodosiou, O. Georgiou, N. Tsapatsoulis
Evaluating annotators consistency with the aid of an innovative database schema, Proceedings of the 6th International Workshop on Semantic Media Adaptation and Personalization (SMAP 2011), pp. 74-78, Vigo, Spain, December 2011 [|pdf|]

2010

A. Lanitis, N. Tsapatsoulis
A general framework for selecting biometric features for automatic user profiling, in Proceedings of the 5th International Workshop on Semantic Media Adaptation and Personalization (SMAP 2010), pp. 50-56, Limassol, Cyprus, December 2010 [|link|]

Z. Theodosiou, O. Georgiou, N. Tsapatsoulis, A. Kounoudes, M. Milis
Annotation of Cultural Heritage Documents Based on XML Dictionaries and Data Clustering, Proceedings of EuroMed 2010, (Lecture Notes in Computer Science, 2010, Volume 6436/2010, pp. 306-317), Limassol, Cyprus, November 2010 [|pdf|]

K. Ntalianis, A. Doulamis, N. Tsapatsoulis
Automatic Annotation of Image Databases based on Implicit Interaction and Visual Concept Modeling, Proceedings of the ACM Multimedia 2010, Firenze, Italy, October 2010

O. Georgiou, N. Tsapatsoulis
The importance of similarity metrics for representative users identification in Recommender Systems, in Proceedings of the 6th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2010) (IFIP Advances in Information and Communication Technology, 2010, Volume 339/2010, pp. 12-21), Larnaca, Cyprus, September 2010 [|pdf|]

Z. Theodosiou, N. Tsapatsoulis, S. Bujak-Pietrek, I. Szadkowska-Stanczyk,
Airborne asbestos fibers detection in microscope images using re-initialization free active contours, Proceedings of the 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2010), pp.4785-4788, Buenos Aires, Argentina, September 2010 [|pdf|]

O. Georgiou, N. Tsapatsoulis
Improving the scalability of recommender systems by clustering using genetic algorithms, in Proceedings of the 20th International Conference on Artificial Neural Networks (ICANN 2010) (Lecture Notes in Computer Science, 2010, Volume 6352/2010, pp. 442-449), Thessaloniki, Greece, September 2010 [|pdf|]

A. Lanitis, N. Tsapatsoulis
On the Quantification of Aging Effects on Biometric Features, in Proceedings of the 6th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2010) (IFIP Advances in Information and Communication Technology, 2010, Volume 339/2010, pp. 360-367), Larnaca, Cyprus, September 2010 [|pdf|]

2009

N. Tsapatsoulis, Z. Theodosiou
Object Classification using the MPEG-7 visual descriptors: An experimental evaluation using state of the art data classifiers, in Proceedings of the 19th International Conference on Artificial Neural Networks (ICANN 2009), Limassol, Cyprus, September 2009 (Lecture Notes in Computer Science, 2009, Volume 5769/2009, pp. 905-912 [|pdf|]).

Z. Theodosiou, A. Kounoudes, N. Tsapatsoulis, M. Milis
MuLVAT: A Video Annotation Tool based on XML-dictionaries and Shot Clustering, in Proceedings of the 19th International Conference on Artificial Neural Networks (ICANN 2009), Limassol, Cyprus, September 2009 (Lecture Notes in Computer Science, 2009, Volume 5769/2009, pp. 913-922 [|pdf|])

K. Ntalianis, A. Doulamis, N. Tsapatsoulis, N. Doulamis
Unsupervised Clustering of Clickthrough Data for Automatic Annotation of Multimedia Content, in Proceedings of the 19th International Conference on Artificial Neural Networks (ICANN 2009), Limassol, Cyprus, September 2009 (Lecture Notes in Computer Science, 2009, Volume 5769/2009, pp. 895-904 [|pdf|])

N. Tsapatsoulis
A Hierarchical Classification Scheme for Semantic Image Annotation, in Proceedings of the 1st International Conference on Advances in Multimedia (MMEDIA 2009), pp. 194-200, Colmar, France, July 2009 [|pdf|].

N. Tsapatsoulis
Health monitoring through an attention-based agent, in Proceedings of the 16th International Conference on Systems, Signals and Image Processing (IWSSIP 2009), pp. 1-5, Chalkida, Greece, June 2009 [|pdf|].

N. Tsapatsoulis, C. Pattichis
Palm geometry biometrics: A score-based fusion approach, in Proceedings of the 1st Workshop on Artificial Intelligence Approaches for Biometric Template Creation and Multibiometrics Fusion, in conjunction with AIAI'09, Thessaloniki, Greece, April 2009 [|pdf|].

2008

D. Vogiatzis, N. Tsapatsoulis
Modeling User Networks in Recommender Systems, in Proceedings of the 3rd International Workshop on Semantic Media Adaptation and Personalization (SMAP 2008), pp. 106-111, Prague, Czech Republic, December 2008 [|pdf|].

K. Ntalianis, A. Doulamis, N. Tsapatsoulis, N. Doulamis
Human action analysis, annotation and modeling in video streams based on implicit user interaction, in Proceedings of the ACM Multimedia (AREA 2008 Workshop), pp. 65-72, Vancouver, Canada, October 2008.

K. Papadopoulos, N. Tsapatsoulis, A. Lanitis, A. Kounoudes
The History Of Commandaria: Digital Journeys Back To Time, in Proceedings of the 14th International Conference on Virtual Systems and Multimedia (VSMM 2008), Limassol, Cyprus, October 2008.

2007

N. Tsapatsoulis, S. Petridis
Classifying Images from Athletics based on Spatial Relations, in Proceedings of the 2nd International Workshop on Semantic Media Adaptation and Personalization, London, UK, pp.92-97, December 2007 [|pdf|]

N. Tsapatsoulis, C. Pattichis, K. Rapantzikos
Biologically inspired Region Of Interest Selection for Low Bit-rate Video Coding, in Proceedings of the IEEE International Conference on Image Processing (ICIP 2007), San Antonio, Texas, USA, Part III, pp. 33-336, September 2007 [|pdf|]

N. Tsapatsoulis, S. Petridis, S. J. Perantonis
On the use of spatial relations between objects for image classification, in Proceedings of the 4th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2007), Athens, Greece, September 2007 (IFIP Advances in Information and Communication Technology, Volume 247/2007, Springer, pp. 347-356 [|pdf|]).

N. Tsapatsoulis, C. Loizou, C. Pattichis
Region of Interest Video Coding for Low bit-rate Transmission of Carotid Ultrasound Videos over 3G Wireless Networks, in Proceedings of the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2007), Lyon, France, pp. 3717-3720, August 2007 [|pdf|].

D. Vogiatzis, N. Tsapatsoulis
Clustering Microarray Data with Space Filling Curves, International Workshop on Fuzzy Logic and Applications (WILF 2007), Genoa, Italy, July 2007. [|pdf|]

2006

S. Petridis, N. Tsapatsoulis

Semantics Extraction from Multimedia Content: The BOEMIE Architecture, in Proceeding of the 1st International conference on Semantics and digital Media Technology (SAMT 2006), December 2006, Athens, Greece. [|pdf|]

N. Tsapatsoulis, K. Rapantzikos
Wavelet Based Estimation of Saliency Maps in Visual Attention Algorithms, Lecture Notes in Computer Science, Springer Berlin / Heidelberg, Vol. 4132/2006, pp. 538-547, Book: Artificial Neural Networks – ICANN 2006.

D. Vogiatzis, N. Tsapatsoulis
Missing Value Estimation for DNA Microarrays with Mutliresolution Schemes, Lecture Notes in Computer Science, Springer Berlin / Heidelberg, Vol. 4132/2006, pp. 141-150, Book: Artificial Neural Networks – ICANN 2006.

N. Tsapatsoulis, K. Rapantzikos, Y. Avrithis
Priority Coding for Video-telephony Applications based on Visual Attention, in Proc. of the 2nd International Mobile Multimedia Communications Conference (MobiMedia 2006), Alghero, Sardinia, Italy, September 2006. [|pdf|]

N. Tsapatsoulis, C. Pattichis, A. Kounoudes, C. Loizou, A. Constantinides, J. G. Taylor
Visual Attention based Region of Interest Coding for Video-telephony Applications, in Proc. of the 5th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP’06), Patras, Greece, July 2006. [|pdf|]

2005

K. Rapantzikos, N. Tsapatsoulis
Enhancing the Robustness of skin-based Face Detection Schemes through a Visual Attention Architecture, Proceedings of the 2005 IEEE International Conference on Image Processing (ICIP 2005), vol. 2, pp. 1298-1301, Genova, Italy, September 2005.

M. Wallace, N. Tsapatsoulis
Combining GAs and RBF Neural Networks for Fuzzy Rule Extraction from Numerical Data, in Proceedings of the International Conference on Artificial Neural Networks (ICANN 2005), Warsaw, Poland, September 2005 (Lecture Notes in Computer Science, 2005, Volume 3697/2005, pp. 521-526) [|pdf|]

D. Vogiatzis, N. Tsapatsoulis
Active Learning with Wavelets for Microarray Data, in Proceedings of the International Workshop on Fuzzy Logic and Applications (WILF 2005), Crema, Italy, September 2005. [|pdf|]

N. Tsapatsoulis, D. Vogiatzis
InUbiHealth: Intelligent Artefacts for Ubiquitous Health Monitoring, in Proceedings of the 5th International Network Conference (INC 2005), Samos, Greece, 5-7 July 2005. [|pdf|]

2004

K. Rapantzikos, N. Tsapatsoulis, Y. Avrithis
Spatiotemporal Visual Attention Architecture for Video Analysis, in Proceedings of the MMSP’04, pp. 83-86, Siena, Italy, September 2004 [|pdf|].

S. Ioannou, A. Raouzaiou, K. Karpouzis, M. Pertselakis, N. Tsapatsoulis, S. Kollias
Adaptive Rule-Based Facial Expression Recognition, in Lecture Notes in Artificial Intelligence, vol. 3025, Springer-Verlag, pp. 466 - 475, 2004 [|pdf|].

T. Balomenos, M. Pertselakis, E. McMahon, N. Tsapatsoulis
On the Estimation of Car Driver Profiles in Proceedings of the 1st Int. Conf. “From Scientific Computing to Computational Engineering” IC-SCCE, Athens, Greece, September 2004 [|pdf|]

M. Wallace, A. Raouzaiou, N. Tsapatsoulis
Facial Expression Classification based on MPEG-4 FAPs: The use of evidence and prior knowledge for uncertainty removal, in Proceedings of the FUZZ-IEEE 2004 Conference, vol. 1, pp. 51-54, Budapest, Hungary, 2004. [|pdf|]

2003

G. Tsechpenakis, K. Rapantzikos, N. Tsapatsoulis, S. Kollias
Object Tracking in Clutter and Partial Occlusion through Rule-Driven Utilization of Snakes, in Proceedings of the IEEE International Conference on Multimedia and Expo (ICME’03), vol. 3, pp. 69-72, Baltimore, MD, USA, 2003 [|pdf|].

N. Tsapatsoulis, M. Wallace, S. Kasderidis
Improving the Performance of Resource Allocation Networks through Hierarchical Clustering of High Dimensional Data, in Proceedings of the 13th International Conference on Artificial Neural Networks (ICANN'03), Istanbul, Turkey, 2003 (Lecture Notes in Computer Science, Volume 5769/2003, Springer, pp. 867-874 [|pdf|])

S. Kasderidis, J. G. Taylor, N. Tsapatsoulis, D. Malchiodi
Drawing Attention to the Dangerous, in Proceedings of the 13th International Conference on Artificial Neural Networks (ICANN'03), Istanbul, Turkey, 2003 (Lecture Notes in Computer Science, Volume 5769/2003, Springer, pp. 909-916 [|pdf|])

A. Raouzaiou, S. Ioannou, K. Karpouzis, N. Tsapatsoulis, S. Kollias, R. Cowie
An Intelligent Scheme for Facial Expression Recognition, in Proceedings of the 13th International Conference on Artificial Neural Networks (ICANN'03), Istanbul, Turkey, 2003 (Lecture Notes in Computer Science, Volume 5769/2003, Springer, pp. 867-874 [|pdf|])

M. Pertselakis, N. Tsapatsoulis, S. Kollias, A. Stafylopatis
An Adaptive Resource Allocating Neural Fuzzy Inference System, in Proceedings of the IEEE Intelligent Systems Application to Power Systems (ISAP’03), Lemnos, Greece, 2003. [|pdf|]

M. Pertselakis, N. Tsapatsoulis,
Service Discovery in Ubiquitous Computing: A first step towards sensor-based Context Identification, in Proceedings of the workshop on "Networking and Communication in the context of Disappearing Computer" held in the framework of the “Tales of the Disappearing Computer”, pp. 333-346, Santorini, Greece, June 2003. [|pdf|]

K. Rapantzikos, N. Tsapatsoulis
On the Implementation of Visual Attention Architectures, in Proceedings of the workshop on "Networking and Communication in the context of Disappearing Computer" held in the framework of the “Tales of the Disappearing Computer”, pp. 333-346, Santorini, Greece, June 2003. [|pdf|]

T. Balomenos, K. Rapantzikos, N. Tsapatsoulis
On the use of ECG waveforms for Health Status Estimation, in Proceeding of the “Tales of the Disappearing Computer”, pp. 69-72, Santorini, Greece, June 2003. [|pdf|]

A. Raouzaiou, K. Karpouzis, N. Tsapatsoulis, S. Kollias
Emotion Representation for Virtual Environments, in Proceedings of the 7th International Conference on Telecommunications, ConTEL2003, pp. 375-382, Zagreb, Croatia, June 2003. [|pdf|]

T. Balomenos, N. Tsapatsoulis, S. Kollias, S. Kasderidis, J. G. Taylor
Attention-driven Artificial Agents, in Proceedings of the European Symposium on Intelligent Technologies, Hybrid Systems and their implementation on Smart Adaptive Systems (EUNITE’03), Oulu, Finland, July 2003. [|pdf|]

P. Tzouveli, N. Tsapatsoulis, S. Kollias, M. Michaelidou
On the Development of User Adapted e-learning Schemes for Teachers, in Proceedings of the 3rd International Conference on "New Horizons in Industry and Education", Santorini, Greece, August 2003. [|pdf|]

2002

P. Tzouveli, K. Ntalianis, N. Tsapatsoulis, S. Kollias
Automatic Face Region Watermarking Using Qualified Significant Wavelet Trees, in Proceedings of 9th International Workshop on Systems, Signal and Image Processing (IWSSIP’02), Manchester, UK, November 2002. [|pdf|]

A. Raouzaiou, N. Tsapatsoulis, V. Tzouvaras, G. Stamou, S. Kollias
A Hybrid Intelligence System for Facial Expression Recognition, in Proceedings of EUNITE 2002: Special Session on Multimedia Technologies and Ontologies, Albufeira, Portugal, September 2002. [|pdf|]

2001

G. Votsis, N. Doulamis, A. Doulamis, N. Tsapatsoulis, S. Kollias
A Neural-Network-Based Approach to Adaptive Human Computer Interaction, in Proceedings of the ICANN01, pp. 1054-1059, Vienna, Austria, August 2001.

A. Raouzaiou, N. Tsapatsoulis, S. Kollias
Parameterized Facial Expression Synthesis for Videoconferencing Applications, in Proceedings of Intl. Workshop on Very Low Bitrate Video Coding (VLBV01), pp. 83-90, Athens, Greece, October 2001. [|pdf|]

2000

N. Tsapatsoulis, Y. Avrithis, S. Kollias
Efficient Face Detection for Multimedia Applications, in Proceedings of the ICIP-2000, vol.2, pp. 247 –250, Vancouver, BC, Canada, September 2000, [|pdf|]

Y. Avrithis, N. Tsapatsoulis, S. Kollias
Color-Based Retrieval of Facial Images, in Proceedings of the EUSIPCO-2000, Tampere, Finland, September 2000. [|pdf|]

N. Tsapatsoulis, K. Karpouzis, G. Stamou, F. Piat, S. Kollias
A Fuzzy System for Emotion Classification based on the MPEG-4 Facial Definition Parameter Set, in Proceedings of the EUSIPCO-2000, Tampere, Finland, September 2000. [|pdf|]

Y. Avrithis, N. Tsapatsoulis, S. Kollias
Broadcast News Parsing Using Visual Cues: A Robust Face Detection Approach, in Proceedings of the IEEE International Conference on Multimedia and Expo (ICME2000), vol. 3, pp. 1469-1472, New York City, NY, July 2000 [|pdf|].

F. Piat, N. Tsapatsoulis
Exploring the Time Course of Facial Expressions with a Fuzzy System in Proceedings of the IEEE International Conference on Multimedia and Expo (ICME2000), vol. 2, pp. 615-618, New York City, NY, July 2000 [|pdf|].

N. Tsapatsoulis, S. Kollias
Face Detection in Color Images and Video Sequences, in Proceedings of the IEEE MELECON 2000 Mediterranean Electrotechnical Conference, vol. 2, pp. 498-502, Nicosia, Cyprus, May 2000 [|pdf|]

K. Karpouzis, N. Tsapatsoulis, S. Kollias
Moving to Continuous Facial Expression Space using the MPEG-4 Facial Definition Parameter (FDP) Set, in Proceedings of the Electronic Imaging 2000 Conference of SPIE, San Jose, CA, USA, January 2000. [|pdf|]

1999

I. Stefanakis, A. Doulamis, N. Doulamis, N. Tsapatsoulis
A Multiresolution Model of Iterative Regularized Image Restoration, in Proceedings of the ICIIS’99, pp. 512-518, Washington D.C., USA, November 1999 [|pdf|]

N. Tsapatsoulis, Y. Avrithis, S. Kollias
On the use of Radon Transform for Facial Expression Recognition, in Proceedings of the ISAS/SCI’99, Orlando, Florida, USA, July 1999. [|pdf|]

1998

N. Tsapatsoulis, M. Leonidou, S. Kollias
Facial Expression Recognition Using HMM with Observation Dependent Transition Matrix, in Proceedings of the MMSP’98, pp. 89-95, Redondo Beach, California, USA, December 1998 [|pdf|]

M. Leonidou, N. Tsapatsoulis, S. Kollias
An Illumination Invariant Face Recognition Algorithm, in Proceedings of the JCIS’98, Durham, North Carolina, USA, October 1998. [|pdf|]

N. Tsapatsoulis, V. Alexopoulos, S. Kollias
A Vector Based Approximation of KLT and its Application to Face Recognition, in Proceedings of the EUSIPCO’98, Rhodes, Greece, September 1998. [|pdf|]

G. Votsis, N. Tsapatsoulis, K. Karpouzis, S. Kollias
A Simplified Representation of 3D Human Faces adapted from 2D Images, in Proceedings of the NMBIA’98, Glasgow, UK, July 1998. [|pdf|]

N. Tsapatsoulis, N. Doulamis, A. Doulamis, S. Kollias
Face Extraction from Non-Uniform Background and Recognition in Compressed Domain, in Proceedings of the ICASSP’98, vol. 5, pp. 2701-2704, Seattle WA, U.S.A., May 1998 [|pdf|]

1997

N. Tsapatsoulis, F. Schnorrenberg, C. Pattichis, S. Kollias
An Image Analysis System for Automated Detection of Breast Cancer Nuclei, in Proceedings of the ICIP’97, vol. 3, pp. 512-515, Santa Barbara, U.S.A., October 1997 [|pdf|]

N. Tsapatsoulis, K. Karpouzis, G. Votsis, S. Kollias
Analysis by synthesis of facial images based on frontal and profile views, in Proceedings of the IWSNHC3DI’97, Rhodes, Greece, September 1997 [|pdf|]

N. Tsapatsoulis, F. Schnorrenberg, C. Pattichis, S. Kollias, C. Schizas
A Neural Network Assisted Algorithm for Automated Detection of Breast Cancer Nuclei, in Proceedings of the DSP’97, vol. 1, pp. 269-272, Santorini, Greece, July 1997 [|pdf|]

N. Doulamis, N. Tsapatsoulis, A. Doulamis, A. Tsiodras, S. Kollias
Markovian models for the output of real world MPEG-1 encoders, in Proceedings of the 2nd Erlangen Symposium “Advances in Digital Communications”, Erlangen, Germany, April 1997. [|pdf|]

1996

A. Doulamis, N. Tsapatsoulis, N. Doulamis, S. Kollias
Innovative techniques for the recognition of faces based on multiresolution analysis and morphological filtering, in Proceedings of the IWISP’96, Manchester, U.K., November 1996.

• CIS 164: Statistics for the Social Sciences
• CIS 306: Search in the Internet and Social Media
• CIS 473: Collective Intelligence
• CIS 485: Social Network Analysis