Now showing items 1-20 of 40

  • Adding semantic modules to improve goal-oriented analysis of data warehouses using I-star 

    Mate, Alejandro; Trujillo Mondejar, Juan Carlos; Franch Gutiérrez, Javier (2014-02-01)
    Article
    Open Access
    The success rate of data warehouse (DW) development is improved by performing a requirements elicitation stage in which the users' needs are modeled. Currently, among the different proposals for modeling requirements, there ...
  • A framework for building OLAP cubes on graphs 

    Ghrab, Amine; Romero Moral, Óscar; Skhiri, Sabri; Vaisman, Alejandro; Zimányi, Esteban (Springer, 2015)
    Conference report
    Open Access
    Graphs are widespread structures providing a powerful abstraction for modeling networked data. Large and complex graphs have emerged in various domains such as social networks, bioinformatics, and chemical data. However, ...
  • A framework for multidimensional indexes on distributed and highly-available data stores 

    Cugnasco, Cesare; Becerra Fontal, Yolanda (Barcelona Supercomputing Center, 2015-05-05)
    Conference report
    Open Access
    No-relational databases are nowadays a common solution when dealing with a huge data set and massive query workload. These systems have been redesigned from scratch in order to achieve scalability and availability at ...
  • A modularization proposal for goal-oriented analysis of data warehouses using I-star 

    Maté, Alejandro; Trujillo, Juan; Franch Gutiérrez, Javier (Springer, 2011)
    Conference report
    Restricted access - publisher's policy
    The success rate of Data Warehouse (DW) development is improved by performing a requirements elicitation stage in which the users’ needs to be fulfilled by the DW are modeled. Currently, among the different proposals for ...
  • An approach for alert raising in real-time data warehouses 

    López, Maximiliano Ariel; Nadal Francesch, Sergi; Djedaini, Mahfoud; Marcel, Patrick; Peralta, Verónika; Furtado, Pedro (2015)
    Conference report
    Open Access
    This work proposes an approach for alert raising within a real-time data warehouse environment. It is based on the calculation of confidence intervals for measures from historical facts. As new facts arrive to the data ...
  • Aplicació de gestió (ERP) de contactes i esdeveniments per l’EPSEVG 

    Escribano Gómez, Jesús Manuel (Universitat Politècnica de Catalunya, 2010-06-28)
    Master thesis (pre-Bologna period)
    Open Access
    Amb aquest projecte final de carrera es vol millorar la gestió dels contactes dels diferents usuaris de l’EPSEVG, així com facilitar la gestió i creació d’esdeveniments i campanyes Els treballadors de l’EPSEVG es relacionen ...
  • A requirement-driven approach to the design and evolution of data warehouses 

    Jovanovic, Petar; Romero Moral, Óscar; Simitsis, Alkis; Abelló Gamazo, Alberto; Mayorova, Daria (2014-08-01)
    Article
    Restricted access - publisher's policy
    Designing data warehouse (DW) systems in highly dynamic enterprise environments is not an easy task. At each moment, the multidimensional (MD) schema needs to satisfy the set of information requirements posed by the business ...
  • A unified view of data-intensive flows in business intelligence systems : a survey 

    Jovanovic, Petar; Romero Moral, Óscar; Abelló Gamazo, Alberto (2016-12)
    Article
    Open Access
    Data-intensive flows are central processes in today’s business intelligence (BI) systems, deploying different technologies to deliver data, from a multitude of data sources, in user-preferred and analysis-ready formats. ...
  • Building a Data Warehouse for the global WHO information and surveillance system to control/eliminate Chagas disease 

    Viñas Navas, Jaume (Universitat Politècnica de Catalunya, 2014-01-17)
    Master thesis (pre-Bologna period)
    Open Access
    The objective of the project is to document the software requirements to build the Data Warehouse of the global Chagas disease. The main tasks under the project are the definition of the software requirements specification ...
  • Cronometraje y clasificación de rallies slot 

    De Haro Ruiz, Pablo; Llinàs Gea, Roger; Mazariegos Canellas, Salvador (Universitat Politècnica de Catalunya, 2005-04)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    La finalidad de este proyecto final de carrera ha sido la de diseñar e implementar un sistema de gestión y medición de tiempos para los campeonatos de Rally Slot. El diseño de dicho sistema se realiza con el fin de ser ...
  • Data setup for water distribution system supervision 

    Pérez Magrané, Ramon; Grau, Sergi; Jimenez, Victor; Martínez, Xavier; Tomas, Ricard (2017)
    Conference report
    Open Access
    The availability of on-line data coming from the water distribution systems (WDS) allows the monitoring of such critical infrastructures. Nevertheless the huge amount of data that come to the control centre implies an ...
  • ETL Testing Analyzer 

    Murar, Claudiu-Ionut (Universitat Politècnica de Catalunya, 2014-12-22)
    Master thesis
    Open Access
    ETL testing techniques are nowadays widely used into the data integration process. These techniques refer to the ability of being able to check whether the information that is loaded into the data warehouse has correctly ...
  • Gestión de construcción de piscinas 

    Gallardo Sánchez, Jessica (Universitat Politècnica de Catalunya, 2011)
    Master thesis (pre-Bologna period)
    Open Access
    El objetivo de este proyecto de final de carrera es la elaboración de un software de gestión para la informatización de una empresa de construcción de piscinas que nunca ha utilizado software para llevar a cabo sus funciones ...
  • Graph BI & analytics: current state and future challenges 

    Ghrab, Amine; Romero Moral, Óscar; Jouili, Salim; Skhiri, Sabri (Springer, 2018)
    Conference report
    Open Access
    In an increasingly competitive market, making well-informed decisions requires the analysis of a wide range of heterogeneous, large and complex data. This paper focuses on the emerging field of graph warehousing. Graphs ...
  • Hecuba: NoSql made easy 

    Alomar, Guillem; Becerra Fontal, Yolanda; Torres Viñals, Jordi (Barcelona Supercomputing Center, 2015-05-05)
    Conference report
    Open Access
    Non-relational databases are nowadays a common solution when dealing with huge data set and massive query work load. These systems have been redesigned from scratch in order to achieve scalability and availability at ...
  • Implementation of the multidimensional schemas integration method ORE 

    Mayorova, Daria (Universitat Politècnica de Catalunya, 2013-12-18)
    Master thesis
    Open Access
    The goal of the project is the implementation of the semi-automatic method, named ORE, for creating multidimentional schemas for data warehouses by integrating information requirements in an iterative way.
  • Integrating ETL processes from information requirements 

    Romero Moral, Óscar; Jovanovic, Petar; Simitsis, Alkis; Abelló Gamazo, Alberto (Springer, 2012)
    Conference report
    Restricted access - publisher's policy
    Data warehouse (DW) design is based on a set of requirements expressed as service level agreements (SLAs) and business level objects (BLOs). Populating a DW system from a set of information sources is realized with ...
  • Interactive multidimensional modeling of linked data for exploratory OLAP 

    Gallinucci, Enrico; Golfarelli, Matteo; Rizzi Bach, Stefano; Abelló Gamazo, Alberto; Romero Moral, Óscar (Elsevier, 2018-09)
    Article
    Restricted access - publisher's policy
    Exploratory OLAP aims at coupling the precision and detail of corporate data with the information wealth of LOD. While some techniques to create, publish, and query RDF cubes are already available, little has been said ...
  • La figura de l'administrador de dades 

    Campderrich, Benet (Asociación de Técnicos de Informática, 1978-11)
    Article
    Open Access
  • Leak detection in a DMA, a real application of flow modelling 

    Jiménez, Víctor; Grau, Sergi; Pérez Magrané, Ramon (2017)
    Conference report
    Open Access
    This paper presents a versatile methodology to calculate parameters that characterise the demand of a DMA. This parameters are used for the leak modelling so that a predictive model is built and trained with historical ...