Browsing by Subject "Classification"

Conference Object

AM-FM representations for the characterization of carotid plaque ultrasound Images

Christodoulou, Christodoulos I.; Pattichis, Constantinos S.; Murray, V.; Pattichis, Marios S.; Nicolaïdes, Andrew N. (2008)

Stroke is the third leading cause of death in the western world and a major cause of disability in adults. The objective of this work was to investigate the use of AM-FM representations for the characterization of carotid ...

Conference Object

Annotating web service sections with combined classification

Kapitsaki, Georgia M. (Institute of Electrical and Electronics Engineers Inc., 2014)

Web services are considered reusable elements that can be exploited stand-alone or as part of wider, generic or domain-specific, applications. With a vast variety of Web Services being offered by service providers, annotation ...

Article

Authenticity of the traditional Cypriot spirit "zivania" on the basis of 1H NMR spectroscopy diagnostic parameters and statistical analysis

Petrakis, Panos V.; Touris, Ioannis; Liouni, Maria; Zervou, Maria; Kyrikou, Ioanna; Kokkinofta, Rebecca I.; Theocharis, Charis R.; Mavromoustakos, Thomas M. (2005)

A previous publication (Kokkinofta et al. J. Agric. Food Chem. 2003, 51, 6233-6239) discussed the use of inductively coupled plasma spectroscopy to differentiate between the traditional Cypriot alcoholic beverage zivania ...

Article

Authenticity of the traditional Cypriot spirit "zivania" on the basis of metal content using a combination of coupled plasma spectroscopy and statistical analysis

Kokkinofta, Rebecca I.; Petrakis, Panos V.; Mavromoustakos, Thomas M.; Theocharis, Charis R. (2003)

Sixty-eight alcoholic beverages ranging in alcoholic degree between 40 and 55 from different countries were analyzed for their 16 most abundant metal elements using inductively coupled plasma (ICP) spectroscopy. The results ...

Article

Automated detection of pavement patches utilizing support vector machine classification

Hadjidemetriou, Georgios M.; Christodoulou, Symeon E.; Vela, Patricio A. (2016)

The efficient condition assessment of road networks is crucial to prevent pavement distresses which can cause a spectrum of detrimental effects. The need for automation of the underlying process is originated from the ...

Conference Object

Bound on the probability of HMM misclassification

Keroglou, C.; Hadjicostis, Christoforos N. (2011)

In this paper we consider the problem of classifying a sequence of observations among two known hidden Markov models (HMMs). We use a classifier that minimizes the probability of error (i.e., the probability of misclassification), ...

Conference Object

Bounds on the probability of misclassification among hidden Markov models

Keroglou, C.; Hadjicostis, Christoforos N. (2011)

Given a sequence of observations, classification among two known hidden Markov models (HMMs) can be accomplished with a classifier that minimizes the probability of error (i.e., the probability of misclassification) by ...

Article

Characterization of the traditional Cypriot spirit Zivania by means of Counterpropagation Artificial Neural Networks

Ballabio, D.; Kokkinofta, Rebecca I.; Todeschini, R.; Theocharis, Charis R. (2007)

Multivariate chemometric techniques, such as Principal Component Analysis and Discriminant Analysis, were previously used to determine the authenticity of the Cypriot traditional spirit Zivania, but these techniques revealed ...

Article

Chemometric characterization of the cypriot spirit "Zivania"

Kokkinofta, Rebecca I.; Theocharis, Charis R. (2005)

In 42 alcoholic beverages produced in Cyprus and other countries, 26 chemical and physical-chemical variables were determined by HPLC and GC chromatography, 1H NMR and ICP spectroscopy, and other techniques. Data were ...

Conference Object

Classification and data mining for hysteroscopy imaging in gynaecology

Neofytou, Marios S.; Loizou, A.; Tanos, Vasilios; Pattichis, Marios S.; Pattichis, Constantinos S. (2008)

The objective of this study was to develop a CAD system for the classification of hysteroscopy images of the endometrium (with suspicious areas of cancer), based on two data mining procedures, the C4.5 and the Hybrid ...

Conference Object

Classification of surface electromyographic signals using AM-FM features

Christodoulou, Christodoulos I.; Kaplanis, P. A.; Murray, V.; Pattichis, Marios S.; Pattichis, Constantinos S. (2009)

The objective of this study was to evaluate the usefulness of AM-FM features extracted from surface electro myographic (SEMG) signals for the assessment of neuromuscular disorders at different force levels. SEMG signals ...

Article

Computer-aided diagnosis in hysteroscopic imaging

Neofytou, Marios S.; Tanos, Vasilios; Constantinou, Ioannis P.; Kyriacou, Efthyvoulos C.; Pattichis, Marios S.; Pattichis, Constantinos S. (2015)

The paper presents the development of a computeraided diagnostic (CAD) system for the early detection of endometrial cancer. The proposed CAD system supports reproducibility through texture feature standardization, ...

Article

Enhanced HIV-1 surveillance using molecular epidemiology to study and monitor HIV-1 outbreaks among intravenous drug users (IDUs) in Athens and Bucharest

Paraskeva, D.; Paraschiv, S.; Sypsa, V.; Nikolopoulos, Georgios K.; Tsiara, Chrissa G.; Magiorkinis, Gkikas; Psichogiou, M.; Flampouris, Andreas; Mardarescu, Mariana; Niculescu, I.; Batan, Ionelia; Malliori-Minerva, Melpomeni; Otelea, D.; Hatzakis, A. (2015)

Background: A significant increase in HIV-1 diagnoses was reported among Injecting Drug Users (IDUs) in the Athens (17-fold) and Bucharest (9-fold) metropolitan areas starting 2011. Methods: Molecular analyses were conducted ...

Article

Feature mapping through maximization of the atomic interclass distances

Karatsiolis, Savvas; Schizas, Christos N. (2015)

We discuss a way of implementing feature mapping for classification problems by expressing the given data through a set of functions comprising of a mixture of convex functions. In this way, a certain pattern’s potential ...

Conference Object

From taxonomies to folksonomies: A roadmap from formal to informal modeling of medical concepts and objects

Bamidis, Panagiotis D.; Kaldoudi, E.; Pattichis, Constantinos S. (2009)

The exploitation of nomenclatures, taxonomies, terminologies and classification of medical diseases, procedures, guidelines has been pivotal to advances in the healthcare domain. Parallel to those have been evolutions in ...

Article

Global genetic variation of HIV-1 infection

Anastassopoulou, C. G.; Kostrikis, Leontios G. (2006)

Variability, both at the population (interhost) as well as at the individual (intrahost) level is a key property of HIV that stems mainly from the inherent infidelity of the reverse transcriptase enzyme that the virus uses ...

Conference Object

Hidden markov model classification based on empirical frequencies of observed symbols

Keroglou, C.; Hadjicostis, Christoforos N. (IFAC Secretariat, 2014)

Given a sequence of observations, classification among two known hidden Markov models (HMMs) can be accomplished with a classifier that minimizes the probability of error (i.e., the probability of misclassification) by ...

Article

HIV epidemiology in Greece

Nikolopoulos, Georgios K.; Paraskeva, D.; Hatzakis, A. (2008)

Greece has experienced early the effect of HIV/AIDS on morbidity and mortality. The era of highly active antiretroviral therapy has alleviated many of the consequences of the epidemic, however, HIV infection remains an ...

Article

Intracellular signalling via the AKT axis and downstream effectors is active and prognostically significant in cancer of unknown primary (CUP): A study of 100 CUP cases

Golfinopoulos, Vassilis; Pentheroudakis, George; Goussia, Anna; Siozopoulou, V.; Bobos, M.; Krikelis, D.; Cervantes, A.; Ciuleanu, T.; Marselos, M.; Fountzilas, George; Malamou-Mitsi, Vassiliki D.; Pavlidis, Nicholas (2012)

Background: Hypothesising that cancer of unknown primary (CUP) may harbour unique characteristics, we present a translational study of the immunohistochemical expression and clinical correlation of key PTEN/AKT pathway ...

Article

Motor vehicle collision fatalities involving alcohol and illicit drugs in Greece: The need for management protocols and a reassessment of surveillance

Papadopoulos, I. N.; Bonovas, Stefanos; Kanakaris, Nikolaos K.; Konstantiadou, Ioanna; Nikolopoulos, Georgios K.; Konstantoudakis, Georgios; Leukidis, Christos (2010)

Aims: The frequency and the effect of alcohol and illicit drugs on injury type, severity and location of death in motor vehicle collision (MVC) fatalities were investigated. Design: Retrospective case-control study based ...