• A modularization proposal for goal-oriented analysis of data warehouses using I-star 

      Maté Morga, Alejandro; Trujillo Mondéjar, Juan Carlos; Franch Gutiérrez, Javier (Springer, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...
    • 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
      Accés obert
      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 ...
    • Data mining techniques using decision tree model in materialised projection and selection view 

      Teh, Y. W. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2004)
      Article
      Accés obert
      With the availability of very large data storage today, redundant data structures are no longer a big issue. However, an intelligent way of managing materialised projection and selection views that can lead to fast access ...
    • Practical data mining in a large utility company 

      Hébrail, Georges (Institut d'Estadística de Catalunya, 2001)
      Article
      Accés obert
      We present in this paper the main applications of data mining techniques at Electricité de France, the French national electric power company. This includes electric load curve analysis and prediction of customer ...
    • SMART: An application framework for real time big data analysis on heterogeneous cloud environments 

      Anjos, Julio C.S. dos; Assunção, Marcos D.; Bez, Jean; Geyer, Claudio; Pignaton de Freitas, Edison; Carissimi, Alexandre; Costa, João Paulo C. L.; Fedak, Gilles; Freitag, Fèlix; Markl, Volker; Fergus, Paul; Pereira, Rubem (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The amount of data that human activities generate poses a challenge to current computer systems. Big data processing techniques are evolving to address this challenge, with analysis increasingly being performed using ...
    • Supporting data integration tasks with semi-automatic ontology construction 

      Touma, Rizkallah; Romero Moral, Óscar; Jovanovic, Petar (Association for Computing Machinery (ACM), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Data integration aims to facilitate the exploitation of heterogeneous data by providing the user with a unified view of data residing in different sources. Currently, ontologies are commonly used to represent this unified ...
    • The Data warehouse: a temporal database 

      Martín Escofet, Carme; Abelló Gamazo, Alberto (2002-11)
      Report de recerca
      Accés obert
      The aim of this paper is to bring together two research areas, i.e. Data Warehouses and Temporal Databases, involving representation of time. In order to achieve this goal, data warehouse and temporal database research ...