37 Hits in 8.3 sec

EIAW: Towards a Business-Friendly Data Warehouse Using Semantic Web Technologies [chapter]

Guotong Xie, Yang Yang, Shengping Liu, Zhaoming Qiu, Yue Pan, Xiongzhi Zhou
2007 Lecture Notes in Computer Science  
The main idea is to make business semantics explicit by uniformly representing the business metadata (i.e. conceptual enterprise data model and multidimensional model) with an extended OWL language.  ...  User feedback shows that OWL provides an excellent basis for the representation of business semantics in data warehouse, but many necessary extensions are also needed in the real application.  ...  In our tool, the conceptual enterprise data model is expressed by W3C's Web Ontology Language OWL, in particular, OWL-DL, and the multidimensional model is expressed by OWL-DL extended with concrete domain  ... 
doi:10.1007/978-3-540-76298-0_62 fatcat:oytor4avungk7daczq2yknhwpy

Multidimensional Integrated Ontologies: A Framework for Designing Semantic Data Warehouses [chapter]

Victoria Nebot, Rafael Berlanga, Juan Manuel Pérez, María José Aramburu, Torben Bach Pedersen
2009 Lecture Notes in Computer Science  
We also propose an ontology-driven framework to design multidimensional analysis models for Semantic Data Warehouses.  ...  The Semantic Web enables companies and organizations to gather huge amounts of valuable semantically annotated data concerning their subjects of interest.  ...  Acknowledgements This work was supported by the Danish Research Council for Technology and Production, through the framework project "Intelligent Sound" , and the Spanish National Research Project TIN2008  ... 
doi:10.1007/978-3-642-03098-7_1 fatcat:ilkhoynuojezff7vks6izvtx4i

Towards Semantic Geo/BI: A Novel Approach for Semantically Enriching Geo/BI Data with OWL Ontological Layers (OOLAP and ODW) to Enable Semantic Exploration, Analysis and Discovery of Geospatial Business Intelligence Knowledge

Belko Abdoul Aziz Diallo, West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), Competence Centre, Ouagadougou, Burkina Faso, Aziz Diallo, Frédéric Hubert, Sylvie Daniel
2018 International Journal of Information Engineering and Electronic Business  
To contribute in filling up the semantic gap in data warehouses and OLAP data cubes, and enable semantic exploration and reasoning on them, this paper highlights the need for semantically augmenting Geo  ...  /BI data with convenient semantic relations, and provides OWL-based ontologies (ODW and OOLAP) which are capable of replicating data warehouses (respectively OLAP data cubes) in the form semantic data  ...  We also thank Université Laval and especially the Center for Research in Geomatics (CRG) and the Faculty of Forestry, Geography and Geomatics for their support and their funding.  ... 
doi:10.5815/ijieeb.2018.06.01 fatcat:p6qs6aqddrbxnpgqf6oktzo4zm

A framework for multidimensional design of data warehouses from ontologies

Oscar Romero, Alberto Abelló
2010 Data & Knowledge Engineering  
This second goal is the main reason for choosing ontologies instead of other conceptual formalizations, as ontology languages provide reasoning services that will facilitate the automation of our task.  ...  In this paper, we introduce our approach for automatically deriving the multidimensional schema from a domain ontology.  ...  For instance, we can extend the data warehouse and OLAP concepts to other areas like the Semantic Web, where ontologies play a key role providing a common vocabulary.  ... 
doi:10.1016/j.datak.2010.07.007 fatcat:iv7z7xm3crculdhvnmkf5attru

Dimensional enrichment of statistical linked open data

Jovan Varga, Alejandro A. Vaisman, Oscar Romero, Lorena Etcheverry, Torben Bach Pedersen, Christian Thomsen
2016 Journal of Web Semantics  
On-Line Analytical Processing (OLAP) is a data analysis technique typically used for local and well-prepared data.  ...  The use of semantic web technologies for this context is especially encouraged by the Linked Data initiative.  ...  Acknowledgments This research has been funded by the European Commission through the Erasmus Mundus Joint Doctorate "Information Technologies for Business Intelligence -Doctoral College" (IT4BI-DC) and  ... 
doi:10.1016/j.websem.2016.07.003 fatcat:rghuepxvxvcfzbwak554ye52pa

Resource space model, OWL and database

Hai Zhuge, Yunpeng Xing, Peng Shi
2008 ACM Transactions on Internet Technology  
This article investigates the mappings between three typical semantic models: the Web ontology language (OWL), relational database model, and resource space model (a classification-based semantic model  ...  To support advanced applications on the future Web, we suggest integrating the resource space, OWL, and databases to form a powerful semantic platform that enables different semantic models to enhance  ...  Thanks also go to all team members of the China Knowledge Grid Research Group for their help and cooperation.  ... 
doi:10.1145/1391949.1391954 fatcat:dv3gu3wrzvb2fa5h5oxaj6ncge

Open Access Semantic Aware Business Intelligence [chapter]

Oscar Romero, Alberto Abelló
2014 Lecture Notes in Business Information Processing  
Semantic-aware formalisms (such as RDF and ontology languages) have been successfully put in practice in approaches such as Linked Data, whereas movements like Open Data have stressed the need of a new  ...  The vision of an interconnected and open Web of data is, still, a chimera far from being accomplished.  ...  More expressive semantic descriptions have been also proposed by adopting logic-based frameworks: DAML+OIL 8 and the Ontology Web Language (OWL) 9 .  ... 
doi:10.1007/978-3-319-05461-2_4 fatcat:6zuy6jqqgzeehp5co3vxta4l7i

Semantic Metadata for Supporting Exploratory OLAP [article]

Jovan Varga
2016 Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet  
This research has been funded by the European Commission through the Erasmus Mundus Joint Doctorate "Information Technologies for Business Intelligence -Doctoral College" (IT4BI-DC) and it has been partly  ...  Acknowledgments This research has been funded by the European Commission through the Erasmus Mundus Joint Doctorate "Information Technologies for Business Intelligence -Doctoral College" (IT4BI-DC) and  ...  Abstract Publication and sharing of multidimensional (MD) data on the Semantic Web (SW) opens new opportunities for the use of On-Line Analytical Processing (OLAP).  ... 
doi:10.5278/ fatcat:2jvgnvvmznh7dk7dap2aipiiii

Semantic-Based RFID Data Management [chapter]

Roberto De Virgilio, Eugenio Di Sciascio, Michele Ruta, Floriano Scioscia, Riccardo Torlone
2010 Unique Radio Innovation for the 21st Century  
On the other hand, facing on data management issues, a proposal is formulated for an effective off-line multidimensional analysis of huge amounts of RFID data generated and stored along the supply chain  ...  on the fly without depending on a centralized infrastructure.  ...  Semantic-based matchmaking Semantic-based object discovery is grounded on Description Logics (DLs) which provides the Ontology Web Language (OWL-DL) semantics.  ... 
doi:10.1007/978-3-642-03462-6_6 fatcat:kqvytoysi5azzfkwae4brnfzau

Natural language reporting for ETL processes

Alkis Simitsis, Dimitrios Skoutas, Malú Castellanos
2008 Proceeding of the ACM 11th international workshop on Data warehousing and OLAP - DOLAP '08  
In a previous work, we have relaxed the former difficulty by working on the automation of the conceptual design leveraging Semantic Web technology.  ...  Several models have been proposed for the conceptual design and representation of ETL processes, but all share two inconveniences: they require intensive human effort from the designers to create them,  ...  Reasoning tasks, such as inferring subsumption relationships between the ontology classes, are performed by Pellet (http://pellet., an open-source OWL-DL reasoner.  ... 
doi:10.1145/1458432.1458444 dblp:conf/dolap/SimitsisSC08 fatcat:cvmjtftr4ndztbqashtv7rwwpu

Ontology driven search of compound IDs

Alberto Abelló, Oscar Romero
2011 Knowledge and Information Systems  
In this paper, we propose an approach for discovering meaningful identifiers driven by domain ontologies.  ...  Many works have been introduced in the literature for discovering meaningful identifiers (i.e., guaranteeing the entity identity according to the semantics of the universe of discourse), but all of them  ...  We would also like to thank Tomas Aluja for his help on statistical issues, Maria C. Keet for her insights and Joan Marc Montesó for the implementation of the algorithm.  ... 
doi:10.1007/s10115-011-0418-0 fatcat:nvnjzsgz5bfplgjcsbidr2c5jm

Knowledge Graphs [article]

Aidan Hogan, Eva Blomqvist, Michael Cochez, Claudia d'Amato, Gerard de Melo, Claudio Gutierrez, José Emilio Labra Gayo, Sabrina Kirrane, Sebastian Neumaier, Axel Polleres, Roberto Navigli, Axel-Cyrille Ngonga Ngomo (+6 others)
2021 arXiv   pre-print
After some opening remarks, we motivate and contrast various graph-based data models and query languages that are used for knowledge graphs.  ...  We summarise methods for the creation, enrichment, quality assessment, refinement, and publication of knowledge graphs.  ...  Acknowledgements: We thank the attendees of the Dagstuhl Seminar on "Knowledge Graphs" for discussions that inspired and influenced this paper, and all those that make such seminars possible.  ... 
arXiv:2003.02320v5 fatcat:ab4hmm2f2bbpvobwkjw4xbrz4u

Data cube and cloud resources as platform for seamless geospatial computation

Giuliano Andrea Pagani, Luca Trani
2018 Proceedings of the 15th ACM International Conference on Computing Frontiers - CF '18  
Please note the following terms and conditions of use: This work is protected by copyright and other intellectual property rights, which are retained by the thesis author, unless otherwise stated.  ...  This thesis has been submitted in fulfilment of the requirements for a postgraduate degree (e.g. PhD, MPhil, DClinPsychol) at the University of Edinburgh.  ...  OWL is a language designed to represent formal, machine-readable semantics and enable assertion and reasoning. "An OWL ontology may include descriptions of classes, properties and their instances.  ... 
doi:10.1145/3203217.3205861 dblp:conf/cf/PaganiT18 fatcat:6dtd24cgibfx5ob3qkykfgbjvq

Flexible Integration and Efficient Analysis of Multidimensional Datasets from the Web

Benedikt Kämpgen
A mapping between the common model of data cubes and QB to use existing OLAP engines for efficient queries over datasets from the Web. 2.  ...  The broad acceptance of the RDF Data Cube Vocabulary (QB) for publishing multidimensional datasets and of Online Analytical Processing (OLAP) interfaces for intuitive and interactive knowledge discovery  ...  Users can then map domain-specific OWL ontologies from the Semantic Web to this OWL ontology using DL constructs.  ... 
doi:10.5445/ksp/1000047013 fatcat:jivaxlbyujgbtkqirbcpfxawxm

An approach for pipelining nested collections in scientific workflows

Timothy M. McPhillips, Shawn Bowers
2005 SIGMOD record  
Acknowledgments The author sincerely thanks Georg Gottlob and Nicola Leone, who worked with him on these issues since 1999, when they jointly defined the notion of hypertree decompositions.  ...  Moreover, he thanks Gianluigi Greco for his recent contribution to the weighted extension, and Alfredo Mazzitelli for his valuable work in designing and implementing the tools for experiments.  ...  A semantic type represents an ontology concept, expressed in description logic (e.g., in OWL-DL). 6 Optionally, hybrid types permit structural types and semantic types to be linked through semantic annotations  ... 
doi:10.1145/1084805.1084809 fatcat:sgtpcat7vzc3veb4dx2jgskpte
« Previous Showing results 1 — 15 out of 37 results