• Using tags Associated to Resources to Build Ontologies 

    Keddari, Djalila; Mellah, Hakima; Benna, Amel
    In : Rapports de recherche internes, (CERIST, Alger, 2014-06-18)
    Social tagging has recently emerged in the collaborative web as a support shared resources organization allowing users to categorize these resources, that can be web pages, video, or images, by associating them with keywords, called tags. However, the use of uncontrolled tags poses several problems, namely ambiguity, ...
  • Using tags Associated to Resources to Build Ontologies 

    Keddari, Djalila; Mellah, Hakima; Benna, Amel
    In : Workshop on 7th Natural Language Processing and Ontology Engineering (NLPOE 2014), (Pologne, 2014-08-11)
    Social tagging has recently emerged in collaborative web (Web 2.0) as a support shared resources organization allowing users to categorize these resources (web pages, video, images) by associating them with keywords, called tags. However, the use of uncontrolled tags poses several problems, namely ambiguity, writing ...
  • Utilisation des cartes auto-organisatrices de Kohonen dans la recherche documentaire 

    Bessai, Fatma-Zohra; Guergab, Mohamed; Krelifaoui, Mohamed
    In : Revue d'Information Scientifique et Technique (RIST), (CERIST, Alger, 2003)
    La quantité toujours croissante de données textuelles nécessite un effort constant pour la mise au point de méthode de stockage et de consultation afin que la totalité des informations conservées reste accessible de manière satisfaisante. Dans ce travail nous nous intéressons à la conception et la réalisation d’un système ...
  • VANET's Mobility Models and Overtaking: An Overview 

    Djenouri, Djamel; Nekka, Elmalik; Soualhi, Wassim
    In : 3rd International Conference on Information and Communication Technologies: From Theory to Applications, (IEEE, Damascus, Syria, 2008-04)
    The most important feature of vehicular ad hoc networks (VANETs) is the high mobility of nodes, which makes the mobility model one of the most important parameters that should be carefully selected when evaluating any protocol. To correctly and faithfully evaluate protocols in a simulation study, the model should be as ...
  • Vectorial Information Structuring for Documents Filtering and Diffusion 

    Nouali, Omar; Krinah, Abdelghani
    In : The International Arab Journal of Information Technology (IAJIT), (Zarqa Private University, 2008)
    Information retrieval tries to identify relevant documents for an information need. The problems that an IR system should deal with include document indexing (which tries to extract important content from a document), user needs analysis (similar to document indexing but applied to a query), and their internal representation ...
  • Verbose Query Reduction by Learning to Rank for Social Book Search Track 

    Chaa, Messaoud; Nouali, Omar; Bellot, Patrice
    In : Rapports de recherche internes, (CERIST, Alger, 2016-07)
    In this paper, we describe our participation in the INEX 2016 Social Book Search Suggestion Track (SBS). We have exploited machine learning techniques to rank query terms and assign an appropriate weight to each one before applying a probabilistic information retrieval model (BM15). Thereafter, only the top-k terms are ...
  • Vers un langage de haut niveau pour la recherche d’information multimédia 

    Amrane, Abdesalam
    In : Mémoires de Magister, (Université Abderrahmane Mira, Bejaia, 2013)
    L‘indexation multimédia vise à mieux représenter l‘information présente dans le multimédia, en d‘autre terme c‘est extraire la sémantique d‘un contenu multimédia. La sémantique peut être extraite soit à partir du texte environnant ou à partir du contenu visuel. L‘indexation par le texte souffre du problème d‘ambiguïté ...
  • Vérification formelle des propriétés de sécurité des logiciels 

    Mohand Oussaïd, Linda
    In : Mémoires de Magister, (Institut National de Formation en Informatique (INI), Oued Smar, El Harrach - Alger, 2006)
    Cette thèse présente une démarche de vérification formelle des propriétés de sécurité des logiciels. En effet, après étude des approches possibles : preuve formelle et model checking, nous avons identifié le model checking comme étant l'approche la plus adéquate pour notre problématique. Ainsi, la démarche proposée est ...
  • Watermarking of Compressed Video based on DCT Coefficients and Watermark Preprocessing 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : International Conference on Imaging Theory and Applications, (Algarve-Portugal, 2011-03-05)
    Considering the importance of watermarking of compressed video, several watermarking methods have been proposed for authentication, copyrights protection or simply for a secure data carrying through the Internet. Applied to the H.264/AVC video standard, in most of cases, these methods are based on the use of the ...
  • Watermarking of compressed video based on DCT coefficients and watermark preprocessing 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2010-12)
    Considering the importance of watermarking of compressed video, several watermarking methods have been proposed for authentication, copyrights protection or simply for a secure data carrying through the Internet. Applied to the H.264/AVC video standard, in most of cases, these methods are based on the use of the quantized ...
  • Watermarking of H.264 Coded Video Based on the Shifted-Histogram Technique 

    Bouchama, Samira; Hamami, Latifa; Qadri, Muhammad Tahir; Ghanbari, Mohammed
    In : International Journal of Latest Trends in Computing (IJLTC), (2010-12)
    Reversible video watermarking through shifted histogram of the quantized coefficients of the H.264/AVC coded video is introduced. In CIF sequences, the embedded data of a capacity of more than 2500 bits in I frame is possible and can exceed 7000 bits if we also exploit about 10 P frames in the GOP for the embedding. While ...
  • Watermarking techniques applied to H264/AVC video standard 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : International Conference on Information Science and Applications, (Seoul-Korea, 2010-04-21)
    Video watermarking describes the process of embedding information in video to satisfy applications such as the protection of intellectual property and the control of video authentication. In this field, researchers orient their investigations towards the new video standard H264/AVC which is increasingly used because ...
  • Watermarking techniques applied to H264/AVC video standard 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2010-02)
    Video watermarking describes the process of embedding information in video to satisfy applications such as the protection of intellectual property and the control of video authentication. In this field, researchers orient their investigations towards the new video standard H264/AVC which is increasingly used because of ...
  • Wearable Health Monitoring Systems: An Overview of Design Research Areas 

    Boulemtafes, Amine; Badache, Nadjib
    In : (Springer International Publishing, paris, 2016)
  • Wearable Health Monitoring Systems: An Overview of Design Research Areas 

    Boulemtafes, Amine; Badache, Nadjib
    In : (Springer International Publishing, 2016)
    In order to be effective and helping towards improving quality of living of people, design and development of wearable health monitoring systems needs to satisfy a number of medical and non-medical criteria’s while taking in consideration resource limitations and fulfilling ergonomic constraints. This study with the aim ...
  • Web 2.0 et bibliothèques 

    Loukem, Mohamed El Hadi; Aliouali, Nadia
    In : (Centre de recherche sur l'information scientifique et technique - CERIST, 2016-04)
    Le monde de l’information connaît un contexte de transformations intenses. La dématérialisation de l’information et l’accès via internet participent à rendre les bibliothèques de moins en moins visibles et incitent l’usager à se détourner des médiateurs traditionnels d’informations. Le web 2.0 est un nouveau genre ...
  • Web Services based Approach for Integrating Multimedia Content 

    Lebib, Fatma-Zohra; Mellah, Hakima; Amghar, Youssef
    In : International Workshop on Web Intelligence in ICEIS, (SciTePress, Wroclaw, Poland, 2012-06-28)
    Multimedia content is derived from various autonomous, distributed and heterogeneous content sources. To address problems posed by content sources heterogeneity, a service-oriented architecture is proposed to assure a dynamic integration of multimedia content. In this work we propose a model that we call MaaS (for ...
  • Web services based approach for integrating multimedia content 

    Lebib, Fatma-Zohra; Mellah, Hakima; Amghar, Youssef
    In : Rapports de recherche internes, (CERIST, Alger, 2012-05)
    Multimedia content is derived from various autonomous, distributed and heterogeneous content sources (relational or object databases, multimedia applications, multimedia servers, etc...). To address problems posed by content sources heterogeneity, a service-oriented architecture is proposed to assure a dynamic integration ...
  • Web services classification for disaster management and risk reduction 

    Laachemi, Abdelouahab; Boughaci, Dalila
    In : (IEEE Xplore, Munster, Germany, 2017-12-11)
    A disaster is a disruption of the society functioning that can interrupt essential services of our live. It has an important impact on human, material, economic and environment. There a several kind of disaster such as: natural, environmental emergencies and contagious disease that affects health and so on. We need ...
  • WebVR based Interactive Visualization of Open Health Data 

    HADJAR, Hayet; Meziane, Abdelkrim; GHERBI, Rachid; Setitra, Insaf; Zeghichi, Seyf eddine; Lahmil, Abdessalam
    In : Rapports de recherche internes, (CERIST, Alger, 2018-04-22)
    Visualization and manipulation of complex and multivariate data in virtual worlds is important for both holders of these data and for their users. Indeed, Virtual Reality helps to make multidimensional data more intelligible and to bring useful information and knowledge. Offering Virtual Reality to browsers, also known ...