Search results for "Databases"
showing 10 items of 937 documents
Architectural Reconstruction of 3D Building Objects through Semantic Knowledge Management
2010
International audience; This paper presents an ongoing research which aims at combining geometrical analysis of point clouds and semantic rules to detect 3D building objects. Firstly by applying a previous semantic formalization investigation, we propose a classification of related knowledge as definition, partial knowledge and ambiguous knowledge to facilitate the understanding and design. Secondly an empirical implementation is conducted on a simplified building prototype complying with the IFC standard. The generation of empirical knowledge rules is revealed and semantic scopes are addressed both in the bottom up manner along the line of geometry --> topology --> semantic, and a vice ver…
Access and Annotation of Archaeological Corpus via a Semantic Wiki
2010
Semantic wikis have shown their ability to allow knowledge management and collaborative authoring. They are particularly appropriate for scientific collaboration. This paper details the main concepts and the architecture of WikiBridge, a semantic wiki, and its application in the archaelogical domain. Archaeologists primarily have a document-centric work. Adding meta-information in the form of annotations has proved useful to enhance search. WikiBridge combines models and ontologies to increase data consistency within the wiki. Moreover, it allows several types of annotations: simple annotations, n-ary relations and recursive annotations. The consistency of these annotations is checked synch…
Propose Semantic Formalization for 3D Reconstruction of Architectural
2010
International audience; Archi3D project is a successful practice well proved by engineering practices. In this paper, we propose to reconstruct semantics for the purpose of reconstruct 3D architecture in Archi3D fundamentally. The formalization approach starts from several hypotheses on semantics which include: there is a core mechanism of semantics which is not limited to conceptual expression level; and a complete expression of semantics necessaries the ―implicitexplicit‖ transition of human side knowledge, etc. The necessity and feasibility concerning applying the proposed method and technology to the practice of Archi3D is discussed systemically by way of semantics revelations on some …
Information indexing and recommendation : toward a precise description if items by an ontological approach based on business domain modeling : applic…
2015
Effective management of large amounts of information has become a challenge increasinglyimportant for information systems. Everyday, new information sources emerge on the web. Someonecan easily find what he wants if (s)he seeks an article, a video or a specific artist. However,it becomes quite difficult, even impossible, to have an exploratory approach to discover newcontent. Recommender systems are software tools that aim to assist humans to deal withinformation overload. The work presented in this Phd thesis proposes an architecture for efficientrecommendation of news. In this document, we propose an architecture for efficient recommendationof news articles. Our ontological approach relie…
Adding Semantic Extension to Wikis for Enhancing Cultural Heritage Applications
2011
International audience; Wikis are appropriate systems for community-authored content. In the past few years, they show that are particularly suitable for collaborative works in cultural heritage. In this paper, we highlight how wikis can be relevant solutions for building cooperative applications in domains characterized by a rapid evolution of knowledge. We will point out the capabilities of semantic extension to provide better quality of content, to improve searching, to support complex queries and finally to carry out di fferent type of users. We describe the CARE project and explain the conceptual modeling approach. We detail the architecture of WikiBridge, a semantic wiki which allows …
Query-preserving watermarking of relational databases and XML documents
2011
Watermarking allows robust and unobtrusive insertion of information in a digital document. During the last few years, techniques have been proposed for watermarking relational databases or Xml documents, where information insertion must preserve a specific measure on data (for example the mean and variance of numerical attributes). In this article we investigate the problem of watermarking databases or Xml while preserving a set of parametric queries in a specified language, up to an acceptable distortion. We first show that unrestricted databases can not be watermarked while preserving trivial parametric queries. We then exhibit query languages and classes of structures that allow guarante…
HiGeoMes: Distributed Geodatabases in an archaeological joint research project
2013
International audience; The project 'HiGeoMes' seeks to connect knowledge about archaeological sites in the Near East with place names in ancient sources of the 2nd millennium BC. The paper describes the digital approach to integrate textual and geographical information by emphasizing the impact of interfaces linking diverse datasets. Several OGC-based Web services provide reviewed archaeological information in a Web GIS with query capabilities. Place-related philological data are stored in an OWL-store to model the topological relations of unidentified sites. An interface integrates a graph-viewer with the Web GIS by invoking both WFS- and REST-services to spatially integrate the datasets.…
The NEUMA Project: Towards Cooperative On-line Music Score Libraries
2009
International audience
Approche préventive de la qualité des données d'importation dans le contexte de la protéomique clinique
2011
International audience; Dans le domaine biomédical, la protéomique est confrontée à des sources de données de plus en plus nombreuses et à des volumes de données très importants du fait de la multiplication des technologies dites à haut débit. L'hétérogénéité de la provenance des données implique de fait une hétérogénéité dans la représentation et le contenu de ces données. Les données peuvent aussi se révéler incorrectes ce qui engendre des erreurs sur les conclusions des expériences protéomiques. Notre approche a pour objectif de garantir la qualité initiale des données lors de leur importation dans un système d'information dédié à la protéomique. Elle est basée sur le couplage entre des …
Modèle de réseaux multiplexe pour l'étude de l'influence sur Twitter.
2019
International audience