Výsledky vyhledávání - "Ronan Tournier"

Akademický článek

Aerosol Optical Depth Measurements from a Simulated Low-Cost Multi-Wavelength Ground-Based Camera: A Clear Case over a Peri-Urban Area

Autor: Valentin Boulisset, Jean-Luc Attié, Ronan Tournier, Xavier Ceamanos, Javier Andrey, Eric Pequignot, Nicolas Lauret, Jean-Philippe Gastellu-Etchegorry

Publikováno v: Remote Sensing, Vol 16, Iss 1, p 140 (2023)

This paper highlights the advantages of an affordable multi-wavelength ground-based camera, called WaltRCam, for monitoring Aerosol Optical Depth (AOD) in a clear case over a peri-urban area. To simulate the performance of this low-cost camera, for w

Externí odkaz: https://doaj.org/article/298b1f0f81b54d32ad91762319016b07

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TournaRank: when retrieval becomes document competition

Autor: Léa Laporte, Ronan Tournier, Gilles Hubert, Yoann Pitarch, Karen Pinel-Sauvagnat

Publikováno v: Information Processing and Management
Information Processing and Management, Elsevier, 2018, 54 (2), pp.252-272. ⟨10.1016/j.ipm.2017.11.006⟩

International audience; Numerous feature-based models have been recently proposed by the information retrieval community. The capability of features to express different relevance facets (query- or document-dependent) can explain such a success story

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::963ef71d9b3adf5cc61e65bd87bafc07
https://hal.archives-ouvertes.fr/hal-02640769

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Un benchmark enrichi pour l'évaluation des entrepôts de données noSQL volumineuses et variables

Autor: Max Chevalier, Mohammed El Malki, Olivier Teste, Arlind Kopliku, Ronan Tournier

Publikováno v: Actes EDA 2017, vol. RNTI-B-13
Journees Francophones sur les Entrepots de Donnees et l'Analyse en ligne (EDA 2017)
Journees Francophones sur les Entrepots de Donnees et l'Analyse en ligne (EDA 2017), May 2017, Lyon, France. pp.11-26
HAL

National audience; Avec le développement des données massives (Big Data), de nouveaux besoins émergent dans l'évaluation des systèmes d'information décisionnels. En particulier, les bancs d'essais (benchmarks) dédiés aux entrepôts de donnée

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::89c484c7338175f2644afab8d18d3b49
https://hal.archives-ouvertes.fr/hal-02885343

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Agrégations multiples différentiées dans les bases de données multidimensionnelles

Autor: Ronan Tournier, Gilles Zurfluh, Franck Ravat, Ali Hassan, Olivier Teste

Publikováno v: Revue des Sciences et Technologies de l'Information-Série ISI : Ingénierie des Systèmes d'Information
Revue des Sciences et Technologies de l'Information-Série ISI : Ingénierie des Systèmes d'Information, Lavoisier, 2013, 18 (2), pp.75-101. ⟨10.3166/isi.18.2.75-102⟩

National audience; De nombreux modèles ont été proposés pour la modélisation de données multidimensionnelles dans les entrepôts. Ces propositions considèrent une même fonction d’agrégation pour déterminer les valeurs d’une mesure aux d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe5b17deda784a0e3a3668f9614e8382
https://doi.org/10.3166/isi.18.2.75-102

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Document-oriented data warehouses: Models and extended cuboids, extended cuboids in oriented document

Autor: Max Chavalier, Ronan Tournier, Mohammed El Malki, Olivier Teste, Arlind Kopliku

Publikováno v: RCIS
Publons

Within the Big Data trend, there is an increasing interest in Not-only-SQL systems (NoSQL). These systems are promising candidates for implementing data warehouses particularly due to the data structuration/storage possibilities they offer. In this p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b91e10bdc06c8c3e5e1a54b39e83b384
https://doi.org/10.1109/rcis.2016.7549351

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Document-oriented Models for Data Warehouses - NoSQL Document-oriented for Data Warehouses

Autor: Max Chevalier, Olivier Teste, Mohammed El Malki, Arlind Kopliku, Ronan Tournier

Publikováno v: ICEIS (1)
Scopus-Elsevier

There is an increasing interest in NoSQL (Not Only SQL) systems developed in the area of Big Data as candidates for implementing multidimensional data warehouses due to the capabilities of data structuration/storage they offer. In this paper, we stud

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9107ea643cefa9d55637294f139ba83
https://doi.org/10.5220/0005830801420149

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Document-oriented data warehouses : complex hierarchies and summarizability

Autor: Arlind Kopliku, Mohammed El Malki, Ronan Tournier, Olivier Teste, Max Chevalier

Publikováno v: Lecture Notes in Electrical Engineering ISBN: 9789811016264
UNet

There is an increasing interest in implementing data warehouses with NoSQL document-oriented systems. In the ideal case, data can be analysed on different dimensions. These dimensions follow strict hierarchies that we can use to roll-up and drill-dow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23c36d130dee4fdabf07b52bd627884c
https://oatao.univ-toulouse.fr/18796/

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Finding an application-appropriate model for XML data warehouses

Autor: Franck Ravat, Gilles Zurfluh, Ronan Tournier, Olivier Teste

Publikováno v: Information Systems. 35:662-687

Decision support systems help the decision making process with the use of OLAP (On-Line Analytical Processing) and data warehouses. These systems allow the analysis of corporate data. As OLAP and data warehousing evolve, more and more complex data is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c1c5fe7f9fb1374f2bb9efac6448444
https://doi.org/10.1016/j.is.2009.12.002

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Fonctions d'agrégation pour l'analyse en ligne (OLAP) de données textuelles. Fonctions TOP_KWket AVG_KW opérant sur des termes

Autor: Geneviève Pujolle, Ronan Tournier, Olivier Teste, Franck Ravat

Publikováno v: Ingénierie des systèmes d'information. 13:61-84

For more than a decade, researches on OLAP and Multidimensional DataBases (MDB) have generated methodologies, tools and resource management systems for the analysis of numerical data. With the growing availability of digital documents, there is a nee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6e8371825fbdfea8dedafe28ecff9485
https://doi.org/10.3166/isi.13.6.61-84

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