Browsing Conference papers by Title

Now showing items 23-42 of 85

  • Dynamic Topology Control for WSNs in Critical Environments 

    Zinonos, Zinon; Vassiliou, Vasos; Ioannou, Christiana; Koutroullos, Marios (IEEE, 2011)
    Plant automation and control are mission-critical applications and require timely and reliable data delivery, which is difficult to provide using a wireless technology. This is especially more difficult in industrial ...

  • Dynamic Two-Stage Image Retrieval from Large Multimodal Databases 

    Arampatzis, Avi; Zagoris, Konstantinos; Chatzichristofis, Savvas A. (Springer-Verlag, 2011)
    Content-based image retrieval (CBIR) with global features is notoriously noisy, especially for image queries with low percentages of relevant images in a collection. Moreover, CBIR typically ranks the whole collection, ...

  • Empowering Responsible Online Gambling by Real-time Persuasive Information Systems 

    Drosatos, George; Nalbadis, Fotis; Arden-Close, Emily; Baines, Victoria; Bolat, Elvira; Vuillier, Laura; Kostoulas, Theodoros; Wasowska, Sonia; Bonello, Maris; Palles, Jane; McAlaney, John; Phalp, Keith; Ali, Raian (IEEE, 2018-05)
    Online gambling, unlike other mediums of problem-atic and addictive behaviours, such as tobacco and alcohol, offers unprecedented opportunities for building information systems that are able to monitor and understand a ...

  • Enhancing Deniability against Query-Logs 

    Arampatzis, Avi; Efraimidis, Pavlos S.; Drosatos, George (Springer, 2011)
    We propose a method for search privacy on the Internet, focusing onenhancing plausible deniability against search engine query-logs. The method ap-proximates the target search results, without submitting the intended query ...

  • Extracting Intention from Web Queries– Application in eHealth Personalization 

    Drosatos, G.; Arampatzis, A.; Kaldoudi, E. (Springer, Cham, 2015-06)
    Personalizing healthcare applications requires capturing patient specific information, including medical history, health status, and mental aspects such as behaviors, intentions, and attitudes. This paper presents a ...

  • FCTH: Fuzzy color and texture histogram. A low level feature for accurate image retrieval 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis (IEEE (Institute of Electrical and Electronics Engineers , United States), 2008)
    This paper deals with the extraction of a new low level feature that combines, in one histogram, color and texture information. This feature is named FCTH - Fuzzy Color and Texture Histogram - and results from the combination ...

  • Fusion vs. Two-Stage for Multimodal Retrieval 

    Arampatzis, Avi; Zagoris, Konstantinos; Chatzichristofis, Savvas A. (Springer, 2011)
    We compare two methods for retrieval from multimodal collections. The first is a score-based fusion of results, retrieved visually and textually. The second is a two-stage method that visually re-ranks the top-K results ...

  • A fuzzy rule based control system for fast line following robots. 

    Eleftheriou, G.; Doitsidis, L.; Zinonos, Zinon; Chatzichristofis, Savvas A. (IEEE, 2020-06-17)
    This paper focuses on the optimization of the line-tracking and following control technique used in high speed autonomous movable IoT devices such as line-following robotic vehicles. A fusion of a new pro-active / feed-forward ...

  • General Data Format Security Extensions for Biomedical Signals 

    Daukantas, S.; Marozas, V.; Drosatos, G.; Kaldoudi, E.; Lukosevicius, A. (2018)
    Biosignals recorded using personal health devices and stored in General Data Format (GDF) are vulnerable when the data is transferred, processed and stored to the external servers. The aforementioned vulnerabilities influence ...

  • Generalized setting equations for the memory elements of sequential machines. Self-independence criteria. 

    Philokyprou, G.; Gaitanis, N. (Informatica, 1976)
    This paper is concerned with formal derivation of generalized setting (excitation) equations of the flip-flop memory elements of a sequential machine. The equations are expressed in terms of four normalized transition ...

  • Golden Retriever - A Java Based Open Source Image Retrieval Engine 

    Tsochatzidis, Lazaros T.; Iakovidou, Chrysanthi; Chatzichristofis, Savvas A.; Boutalis, Yiannis (ACM, 2013)
    Golden Retriever Image Retrieval Engine (GRire) is an open source light weight Java library developed for Content Based Image Retrieval (CBIR) tasks, employing the Bag of Visual Words (BOVW) model. It provides a complete ...

  • Health Information Exchange with Blockchain amid Covid-19-like Pandemics 

    Christodoulou, Klitos; Christodoulou, Panayiotis; Zinonos, Zinon; Carayiannis, Elias G.; Chatzichristofis, Savvas A. (ΙΕΕΕ, 2020-06-17)
    The COVID-19 pandemic is stress-testing existing health information exchange systems. There exists an increasing demand for sharing patient information and efficiently responding to patient medial data requests. Current ...

  • How much does a zero-permission Android app know about us? 

    Dimitriadis, Antonios; Drosatos, George; Efraimidis, Pavlos S. (2019-11)
    Android devices contain a vast amount of personal data of their owners. These data are stored on the device and are protected by the Android permission scheme. Android apps can obtain access to specific data items by ...

  • Hybrid scheme for fast and accurate image retrieval based on color descriptors 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis (ACTA Press, Canada, 2007)
    This paper proposes a new image retrieval system, thatuses only color features and it's based on a hybrid scheme which combines crisp and fuzzy techniques, in order to retrieve color based similar images. The system ...

  • Identification and Retrieval of DNA Genomes Using Binary Image Representations Produced by Cellular Automata 

    Konstantinidis, K.; Amanatiadis, A.; Chatzichristofis, Savvas A.; Sandaltzopoulos, R.; Sirakoulis, G. Ch. (IEEE (Computer Society), 2014)
    We have developed a novel method for the identification and retrieval of DNA sequences which are represented as binary images. This type of representation emanates from the evolution of one-dimensional nucleotide arrays ...

  • img(Anaktisi): A Web Content Based Image Retrieval System 

    Zagoris, Konstantinos; Chatzichristofis, Savvas A. (IEEE, 2009)
    img(Anaktisi) is a C#/.NET content base image retrieval application suitable for the web. It provides efficient retrieval services for various image databases using as a query a sample image, an image sketched by the ...

  • Img(Rummager): An Interactive Content Based Image Retrieval System 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis; Lux, Mathias (IEEE (Institute of Electrical and Electronics Engineers , United States), 2009)
    This paper presents an image retrieval suite called img(Rummager) which brings into effect a number of new as well as state of the art descriptors. The application can execute an image search based on a query image, either ...

  • Integrating Medical Scientific Knowledge with the Semantically Quantified Self 

    Third, Allan; Gkotsis, George; Kaldoudi, Eleni; Drosatos, George; Portokallidis, Nick; Roumeliotis, Stefanos; Domingue, John (International Semantic Web Conference, 2016-09-23)
    The assessment of risk in medicine is a crucial task, and depends on scientific knowledge derived by systematic clinical studies on factors affecting health, as well as on particular knowledge about the current status of ...

  • Inter-Mobility Support in Controlled 6LoWPAN Networks 

    Zinonos, Zinon; Vassiliou, Vasos (IEEE, 2011)
    The research and industrial community started to think of more complex application scenarios for wireless sensor networks, where the use of mobile sensor nodes is essential. The support of mobile sensor nodes in such ...

  • Investigate via internet the personal values in life and how determine the consumer's environmental behavior 

    Oikonomou, Stefanos; Drosatos, George; Papadopoulos, Theocharis; Oikonomou, Maria (2009-10)
    Everyday the following question is posed: Are businesses more successful when they adapt green strategies in producing and marketing their products?. To address this issue, we should investigate to what determines the ...