Author: Olivier Teste
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

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Book Description

Author: Olivier Teste
Publisher:
ISBN:
Category :
Languages : fr
Pages : 12

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Book Description
CE MEMOIRE TRAITE DE LA MODELISATION CONCEPTUELLE ET DE LA MANIPULATION DES DONNEES (PAR DES ALGEBRES) DANS LES SYSTEMES D'AIDE A LA DECISION. NOTRE THESE REPOSE SUR LA DICHOTOMIE DE DEUX ESPACES DE STOCKAGE : L'ENTREPOT DE DONNEES REGROUPE LES EXTRAITS DES BASES SOURCES UTILES POUR LES DECIDEURS ET LES MAGASINS DE DONNEES SONT DEDUITS DE L'ENTREPOT ET DEDIES A UN BESOIN D'ANALYSE PARTICULIER. AU NIVEAU DE L'ENTREPOT, NOUS DEFINISSONS UN MODELE DE DONNEES PERMETTANT DE DECRIRE L'EVOLUTION TEMPORELLE DES OBJETS COMPLEXES. DANS NOTRE PROPOSITION, L'OBJET ENTREPOT INTEGRE DES ETATS COURANTS, PASSES ET ARCHIVES MODELISANT LES DONNEES DECISIONNELLES ET LEURS EVOLUTIONS. L'EXTENSION DU CONCEPT D'OBJET ENGENDRE UNE EXTENSION DU CONCEPT DE CLASSE. CETTE EXTENSION EST COMPOSEE DE FILTRES (TEMPORELS ET D'ARCHIVES) POUR CONSTRUIRE LES ETATS PASSES ET ARCHIVES AINSI QUE D'UNE FONCTION DE CONSTRUCTION MODELISANT LE PROCESSUS D'EXTRACTION (ORIGINE SOURCE). NOUS INTRODUISONS EGALEMENT LE CONCEPT D'ENVIRONNEMENT QUI DEFINIT DES PARTIES TEMPORELLES COHERENTES DE TAILLES ADAPTEES AUX EXIGENCES DES DECIDEURS. LA MANIPULATION DES DONNEES EST UNE EXTENSION DES ALGEBRES OBJET PRENANT EN COMPTE LES CARACTERISTIQUES DU MODELE DE REPRESENTATION DE L'ENTREPOT. L'EXTENSION SE SITUE AU NIVEAU DES OPERATEURS TEMPORELS ET DES OPERATEURS DE MANIPULATION DES ENSEMBLES D'ETATS. AU NIVEAU DES MAGASINS, NOUS DEFINISSONS UN MODELE CONCEPTUEL DE DONNEES MULTIDIMENSIONNELLES PERMETTANT DE REPRESENTER L'INFORMATION EN UNE CONSTELLATION DE FAITS AINSI QUE DE DIMENSIONS MUNIES DE HIERARCHIES MULTIPLES. LA MANIPULATION DES DONNEES S'APPUIE SUR UNE ALGEBRE ENGLOBANT L'ENSEMBLE DES OPERATIONS MULTIDIMENSIONNELLES ET OFFRANT DES OPERATIONS SPECIFIQUES A NOTRE MODELE. NOUS PROPOSONS UNE DEMARCHE D'ELABORATION DES MAGASINS A PARTIR DE L'ENTREPOT. POUR VALIDER NOS PROPOSITIONS, NOUS PRESENTONS UN LOGICIEL D'AIDE A LA CONCEPTION ET A LA CREATION DES ENTREPOTS DANS LE CADRE DE L'APPLICATION MEDICALE REANIMATIC.

Author: Olivier Teste (enseignant-chercheur en informatique).)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

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Book Description
CE MEMOIRE TRAITE DE LA MODELISATION CONCEPTUELLE ET DE LA MANIPULATION DES DONNEES (PAR DES ALGEBRES) DANS LES SYSTEMES D'AIDE A LA DECISION. NOTRE THESE REPOSE SUR LA DICHOTOMIE DE DEUX ESPACES DE STOCKAGE : L'ENTREPOT DE DONNEES REGROUPE LES EXTRAITS DES BASES SOURCES UTILES POUR LES DECIDEURS ET LES MAGASINS DE DONNEES SONT DEDUITS DE L'ENTREPOT ET DEDIES A UN BESOIN D'ANALYSE PARTICULIER. AU NIVEAU DE L'ENTREPOT, NOUS DEFINISSONS UN MODELE DE DONNEES PERMETTANT DE DECRIRE L'EVOLUTION TEMPORELLE DES OBJETS COMPLEXES. DANS NOTRE PROPOSITION, L'OBJET ENTREPOT INTEGRE DES ETATS COURANTS, PASSES ET ARCHIVES MODELISANT LES DONNEES DECISIONNELLES ET LEURS EVOLUTIONS. L'EXTENSION DU CONCEPT D'OBJET ENGENDRE UNE EXTENSION DU CONCEPT DE CLASSE. CETTE EXTENSION EST COMPOSEE DE FILTRES (TEMPORELS ET D'ARCHIVES) POUR CONSTRUIRE LES ETATS PASSES ET ARCHIVES AINSI QUE D'UNE FONCTION DE CONSTRUCTION MODELISANT LE PROCESSUS D'EXTRACTION (ORIGINE SOURCE). NOUS INTRODUISONS EGALEMENT LE CONCEPT D'ENVIRONNEMENT QUI DEFINIT DES PARTIES TEMPORELLES COHERENTES DE TAILLES ADAPTEES AUX EXIGENCES DES DECIDEURS. LA MANIPULATION DES DONNEES EST UNE EXTENSION DES ALGEBRES OBJET PRENANT EN COMPTE LES CARACTERISTIQUES DU MODELE DE REPRESENTATION DE L'ENTREPOT. L'EXTENSION SE SITUE AU NIVEAU DES OPERATEURS TEMPORELS ET DES OPERATEURS DE MANIPULATION DES ENSEMBLES D'ETATS. AU NIVEAU DES MAGASINS, NOUS DEFINISSONS UN MODELE CONCEPTUEL DE DONNEES MULTIDIMENSIONNELLES PERMETTANT DE REPRESENTER L'INFORMATION EN UNE CONSTELLATION DE FAITS AINSI QUE DE DIMENSIONS MUNIES DE HIERARCHIES MULTIPLES. LA MANIPULATION DES DONNEES S'APPUIE SUR UNE ALGEBRE ENGLOBANT L'ENSEMBLE DES OPERATIONS MULTIDIMENSIONNELLES ET OFFRANT DES OPERATIONS SPECIFIQUES A NOTRE MODELE. NOUS PROPOSONS UNE DEMARCHE D'ELABORATION DES MAGASINS A PARTIR DE L'ENTREPOT. POUR VALIDER NOS PROPOSITIONS, NOUS PRESENTONS UN LOGICIEL D'AIDE A LA CONCEPTION ET A LA CREATION DES ENTREPOTS DANS LE CADRE DE L'APPLICATION MEDICALE REANIMATIC.

Author: Manolis Koubarakis
Publisher: Springer Science & Business Media
ISBN: 3540405526
Category : Business & Economics
Languages : en
Pages : 362

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Book Description
This book is an introduction and source book for practitioners, graduate s- dents, and researchers interested in the state of the art and practice in spatiot- poral databases. It collects the most important and representative research c- ried out in the project CHOROCHRONOS and presents it in a uni?ed fashion. CHOROCHRONOS was a Training and Mobility Research Network funded by the European Commission with the objective to study the design, implemen- tion, and application of spatiotemporal database management systems. This book would never have been possible if it was not for the devoted work of many people. First and foremost, we would like to thank the authors of the nine chapters of this book for their hard work. We would also like to acknowledge the help of Christiane Bernard, our o?cer from the European Commission, who saw the project to its conclusion, working as hard as we did to make it a thorough success. The constructive comments and feedback of our reviewer Colette Roland (University of Paris-1) are also very much appreciated. Last, but not least, we would like to thank all the students and postdoctoral fellows who were trained during CHOROCHRONOS. We hope the time they spent at CHOROCHRONOS node institutions was rewarding and lots of fun! March 2003 Timos Sellis Manolis Koubarakis Andrew Frank, Vienna St ́ ephane Grumbach Ralf Hartmut Guting ̈ Christian Jensen Nikos Lorentzos Yannis Manolopoulos Enrico Nardelli Barbara Pernici Babis Theodoulidis Nectaria Tryfona Hans-J ̈ org Schek Michel Scholl Table of Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Author: Elzbieta Malinowski
Publisher: Springer Science & Business Media
ISBN: 3540744053
Category : Computers
Languages : en
Pages : 457

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Book Description
This exceptional work provides readers with an introduction to the state-of-the-art research on data warehouse design, with many references to more detailed sources. It offers a clear and a concise presentation of the major concepts and results in the subject area. Malinowski and Zimányi explain conventional data warehouse design in detail, and additionally address two innovative domains recently introduced to extend the capabilities of data warehouse systems: namely, the management of spatial and temporal information.

Author: Pascale Zaraté
Publisher: IOS Press
ISBN: 1586038818
Category : Business & Economics
Languages : en
Pages : 516

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Book Description
This publication presents the latest innovations and achievements of academic communities on Decision Support Systems (DSS). These advances include theory systems, computer-aided methods, algorithms, techniques and applications related to supporting decision making. The aim is to develop approaches for applying information systems technology to increase the effectiveness of decision making in situations where the computer system can support and enhance human judgements in the performance of tasks that have elements which cannot be specified in advance. Also it is intended to improve ways of synthesizing and applying relevant work from resource disciplines to practical implementation of systems that enhance decision support capability. The resource disciplines include: information technology, artificial intelligence, cognitive psychology, decision theory, organizational theory, operations research and modeling. Researchers come from the Operational Research area but also from Decision Theory, Multicriteria Decision Making methodologies, Fuzzy sets and modeling tools. Based on the introduction of Information and Communication Technologies in organizations, the decisional process is evolving from a mono actor to a multi actor situation in which cooperation is a way to make the decision.

Author: Stanisław Kozielski
Publisher: Springer Science & Business Media
ISBN: 9780387874302
Category : Business & Economics
Languages : en
Pages : 365

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Book Description
Most of modern enterprises, institutions, and organizations rely on knowledge-based management systems. In these systems, knowledge is gained from data analysis. Today, knowledge-based management systems include data warehouses as their core components. Data integrated in a data warehouse are analyzed by the so-called On-Line Analytical Processing (OLAP) applications designed to discover trends, patterns of behavior, and anomalies as well as finding dependencies between data. Massive amounts of integrated data and the complexity of integrated data coming from many different sources make data integration and processing challenging. New Trends in Data Warehousing and Data Analysis brings together the most recent research and practical achievements in the DW and OLAP technologies. It provides an up-to-date bibliography of published works and the resource of research achievements. Finally, the book assists in the dissemination of knowledge in the field of advanced DW and OLAP.

Author: Erickson, John
Publisher: IGI Global
ISBN: 1605660590
Category : Business & Economics
Languages : en
Pages : 2962

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Book Description
"This reference expands the field of database technologies through four-volumes of in-depth, advanced research articles from nearly 300 of the world's leading professionals"--Provided by publisher.

Author: Jalal Kawash
Publisher: Springer
ISBN: 3319510495
Category : Computers
Languages : en
Pages : 231

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Book Description
This book addresses the challenges of social network and social media analysis in terms of prediction and inference. The chapters collected here tackle these issues by proposing new analysis methods and by examining mining methods for the vast amount of social content produced. Social Networks (SNs) have become an integral part of our lives; they are used for leisure, business, government, medical, educational purposes and have attracted billions of users. The challenges that stem from this wide adoption of SNs are vast. These include generating realistic social network topologies, awareness of user activities, topic and trend generation, estimation of user attributes from their social content, and behavior detection. This text has applications to widely used platforms such as Twitter and Facebook and appeals to students, researchers, and professionals in the field.