Academic & Scientific Articles
Permanent URI for this communityhttp://dl.cerist.dz/handle/CERIST/3
Browse
28 results
Search Results
Item Leveraging Learners' Activity Logs for Course Reading Analytics Using Session-Based Indicators(Inderscience, 2019) Sadallah, Madjid; Encelle, Benoît; Maredj, Azze-Eddine; Prié, YannickA challenge that course authors face when reviewing their contents is to detect how to improve their courses in order to meet the expectations of their learners. In this paper, we propose an analytical approach that exploits learners' logs of reading to provide authors with insightful data about the consumption of their courses. We first model reading activity using the concept of reading-session and propose a new and efficient session identification. We then elaborate a list of indicators computed using learners' reading sessions that allow to represent their behaviour and to infer their needs. We evaluate our proposals with course authors and learners using logs from a major e-learning platform. Interesting results were found. This demonstrates the effectiveness of the approach in identifying aspects and parts of a course that may prevent it from being easily read and understood, and for guiding the authors through the analysis and review tasks.Item Towards reading session-based indicators in educational reading analytics(Springer, 2015-09) Sadallah, Madjid; Encelle, Benoît; Maredj, Azze-Eddine; Prié, YannickIt is a challenging task to identify eLearning courses parts that have to be revised to best suit learners' requirements. Reading being one of the most salient learning activities, one way of doing so is to study how learners consume courses. We intend to support course authors (e.g. teachers) during courses revision by providing them with reading indicators. We use the concept of reading session to denote a learner's active reading period, and we provide several associated reading indicators. In our server-side approach, reading sessions and indicators are calculated using web server logs. We evaluate the relevance of our proposals using logs from a major French eLearning platform. Results are promising: calculated reading sessions are theoretically more precise than other best applicable approaches, and course authors consider suggested indicators to be appropriate to courses revision. Using reading sessions and associated indicators could facilitate authors' work of course reengineering.Item Towards Reading Session-based indicators in Educational Reading(CERIST, 2015-06) Sadallah, Madjid; Encelle, Benoît; Maredj, Azze-Eddine; Prié, YannickIt is a challenging task to identify eLearning courses parts that have to be revised to best suit learners’ requirements. Reading being one of the most salient learning activities, one way of doing so is to study how learners consume courses. We intend to support course authors (e.g. teachers) during courses revision by providing them with reading indicators. We use the concept of reading session to denote a learner’s active reading period, and we provide several associated reading indicators. In our server-side approach, reading sessions and indicators are calculated using web server logs. We evaluate the relevance of our proposals using logs from a major French eLearning platform. Results are promising: calculated reading sessions are theoretically more precise than other best applicable approaches, and course authors consider suggested indicators to be appropriate to courses revision. Using reading sessions and associated indicators could facilitate authors’ work of course reengineering.Item CSP-based adaptation of multimedia document composition(Mohan S. Kankanhalli, Tao Li, Wei Wang, 2015-02) Maredj, Azze-Eddine; Tonkin, NourredineWe propose an approach for the dynamic adaptation of multimedia documents modeled by an over-constrained constraint satisfaction problem (OCSP). In addition the solutions that it provides for the problem of determining the relations that do not comply with the user profile and the problem of the combinatorial explosion when searching for alternative relations, it insures a certain quality of service to the presentation of the adapted document: (i) If the required constraints are not satisfied, no document is generated, unlike other approaches that generates even if the presentation of the adapted document is completely different from the initial one, (ii) The definition of the constraints hierarchy (strong constraints and medium constraints) maintains as much as possible of the initial document relations in the adapted one. As result, the adapted presentations are consistent and close to those of the initial ones.Item CSP-based Adaptation of Multimedia Documents Presentation(CERIST, 2014-11) Maredj, Azze-Eddine; Tonkin, NourredineWe propose an approach for the dynamic adaptation of multimedia documents modelled by an over-constrained constraint satisfaction problem (OCSP). In addition the solutions that it provides for the problem of determining the relations that do not comply with the user profile and the problem of the combinatorial explosion when searching for alternative relations, this approach insures a certain quality of service to the presentation of the adapted document: (i) If the required constraints are not satisfied, no document is generated, unlike other approaches that generates even if the presentation of the adapted document is completely different from the initial one, (ii) The definition of the constraints hierarchy (strong constraints and medium constraints) for the document relations maintains as much as possible of the initial document relations in the adapted one. As result, the presentations of the adapted documents are consistent and close to those of the initial documents.Item XML_GFD : Un Générateur dynamique de Formulaires XLM Valides DTD(CERIST, Alger, 2004) Maredj, Azze-Eddine; Khouatmi-Boukhatem, Samia; Adjerad, Halima DouniazedActuellement, Internet est l’outil par excellence pour la diffusion et l’échange d’informations. Il est aujourd’hui au centre d’un ensemble de nouveaux besoins qui le placent au cœur d’un ensemble de défis technologiques. Une des conditions pour accomplir ces évolutions, est que la structuration et la description des données diffusées et échangées sur le Web doivent être rigoureuses et normalisées. De nouvelles technologies sont donc nécessaires. C’est pourquoi qu’un grand espoir est bâti sur la technologie XML qui est pressentie comme une solution aux insuffisances de HTML. Toutefois, et malgré la profusion d’éditeurs XML, tout le monde s’accorde à dire qu’ils sont dans leur majeure partie complexes et destinés à des usagers ayant des connaissances et des qualifications requises dans le domaine. Par conséquent, il en résulte pour les entreprises désirant s’approprier cette technologie, un coût de production élevé qui peut leurs représenter une contrainte insurmontable. Dans cet article, nous allons présenter un générateur dynamique de formulaires pour l’édition de documents Xml valides-DTD, qui se veut une solution pour une production accessible sans contrainte de profil et à moindre coût.Item Intégration des données multimédias dans les Systèmes d`Information Géographique(CERIST, Alger, 2001) Maredj, Azze-Eddine; Saib, A.; Djermouni, A.La grande croissance des besoins et des exigences des utilisateurs en terme de nouvelles applications dans le domaine des Systèmes d`Information Géographique ( SIG) obéit à une conséquence logique, due essentiellement au développement considérable de la technologie numérique, grâce à laquelle, la cohabitation du texte, de l`image , du son et de la vidéo est rendue possible. Cependant la diversité et la richesse de cette information multimédia pose le problème de son intégration, de sa gestion et de sa présentation au sein d`un même système. Dans cet article, une approche pour la prise en charge de ce problème est proposée. Elle est basée sur une gestion - création, mise à jour et exploitation - d`un réseau d`information hypermédiaItem Décopage automatique de la vidéo en plans(CERIST, Alger, 2001) Maredj, Azze-Eddine; Saadi, F.; Meddour, D.Dans cet article nous présentons une approche de découpage de la vidéo en plans basée sur l’utilisation d’histogrammes globaux d’intensité. Cette technique a été améliorée par l’introduction des techniques statistiques servant à la détection du changement de plans. Le problème de détection des différentes transitions progressives a été résolu par l’utilisation d’une technique à deux seuils. L’approche présentée permet de retrouver l’essentiel de la structure temporelle de la vidéo. Nous étayons à la fin notre démarche par les résultats d’exemples expérimentaux dûment sélectionnés.Item Une approche basée sur le simplexe pour le formatage spatial de documents multimédia interactifs(IEEE, 2004-03) Maredj, Azze-Eddine; Ider, A.; Hammour, AchourL'objectif de ce papier est de montrer comment utiliser les techniques de programmation par contraintes, particulièrement la technique basée sur le simplexe, pour le formatage spatial des documents multimédia interactifs. Nous présentons dans la suite de ce papier le formalisme de la programmation par contrainte basée sur le simplexe, puis nous décrivons la nature des relations spatiales définies dans notre formateur ainsi que son implémentation avec le résolveur Cassowary. Nous nous intéressons principalement au problème de la spécification incrémentale du placement spatial relatif.Item Extending the Conceptual Neighborhood Graph of the Relations for the Semantic Adaptation of Multimedia Documents(CERIST, 2011-05) Maredj, Azze-Eddine; Tonkin, NourredineThe recent developments in computing and communication technology permit to users to access multimedia documents with variety of devices (PCs, PDAs, mobile phones…) having heterogeneous capabilities. This diversification of supports has trained the need to adapt multimedia documents according to their execution contexts. A semantic framework for multimedia document adaptation based on the conceptual neighborhood graphs was proposed. In this framework, adapting consists on finding another specification that satisfies the target constraints and which is as close as possible from the initial document. In this paper, we propose a new way of building the conceptual neighborhood graphs to best preserve the proximity between the adapted and the original documents and to deal with more elaborated relations models by integrating the relations relaxation graphs that permit to handle the delays and the distances defined within the relations.
- «
- 1 (current)
- 2
- 3
- »