TypeChapitres d'ouvrages scientifiques
The maritime environment still represents an unexploited potential for modelling, management and understanding of mobility data. The environment is diverse, open but partly ruled, and covers a large spectrum of ships from small sailing-boats to super tankers which generally exhibit type-related behaviours. Similarly to terrestrial or aerial domains, several real-time positioning systems, such as the Automatic Identification System (AIS), have been developed for keeping track of vessel movements. However the huge amounts of data provided by these reporting systems are rarely used for knowledge discovery. This chapter aims at discussing different aspects of maritime mobilities understanding. This chapter enables readers to, first, understand the intrinsic behaviour of maritime positioning systems and then proposes a methodology to illustrate the different steps leading to trajectory patterns for the understanding of outlier detection.
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AFYOUNI, Imad; RAY, Cyril; CLARAMUNT, Christophe (2012-06)This paper surveys indoor spatial models developed for research fields ranging from mobile robot mapping, to indoor location-based services (LBS), and most recently to context-aware navigation services applied to indoor ...
AFYOUNI, Imad; RAY, Cyril; ILARRI, Sergio; CLARAMUNT, Christophe (Elsevier, 2014)Continuous location-dependent queries are key elements for the development of location-based and context aware services. While most works on location-dependent query processing have been mainly oriented towards outdoor ...
A spatio-temporal modelling approach for the study of the connectivity and accessibility of the Guangzhou metropolitan network CHEN, Shaopei; CLARAMUNT, Christophe; RAY, Cyril (Elsevier, 2014)The urban growth of large cities in China is at a critical stage with the booming of the economy and impressive increase of the population and traffic demand. This paper studies and qualifies the growth and accessibility ...
MILIOU, Anastasia; VODAS, Marios; PELEKIS, Nikos; THEODORIDIS, Yannis; RAY, Cyril; KARKALETSIS, Vangelis; PETRIDIS, Sergios; MILIOU, Anastasia (University of Piraeus, 2013)Reducing ship accidents at sea is important to all economic, environmental, and cultural sectors of Greece. Despite an increase in traffic and national monitoring, ships formulate routes according to their best judgment ...
AFYOUNI, Imad; RAY, Cyril; CLARAMUNT, Christophe; ILARRI, Sergio (Lavoisier, 2015)Cet article développe une représentation de données spatiales d’un environnement intérieur dit “indoor” qui tient compte des dimensions contextuelles centrées sur l’utilisateur et aborde les enjeux de gestion de données ...