Recent Submissions

  • A framework for multidimensional design of data warehouses from ontologies 

    Romero Moral, Óscar; Abelló Gamazo, Alberto (2009-07)
    External research report
    Open Access
    Some research efforts have proposed the automation of the data warehouse design in order to free this task of being (completely) performed by an expert and facilitate the whole process. Most advanced approaches exclusively ...
  • An approach to use cooperative car data in dynamic OD matrix estimation 

    Montero Mercadé, Lídia; Barceló Bugeda, Jaime (2015-10)
    External research report
    Open Access
    Traffic management applications are supported by dynamic models whose input should be realistic real-time OD demand matrices in order to find efficient network state estimates and fore-cast their short-term evolution. OD ...
  • Incremental consolidation of data-intensive multi-flows 

    Jovanovic, Petar; Romero Moral, Óscar; Simitsis, Alkis; Abelló Gamazo, Alberto (2016-05-01)
    Article
    Open Access
    Business intelligence (BI) systems depend on efficient integration of disparate and often heterogeneous data. The integration of data is governed by data-intensive flows and is driven by a set of information requirements. ...
  • TINTIN: a Tool for INcremental INTegrity checking of Assertions in SQL Server 

    Oriol Hilari, Xavier; Teniente López, Ernest; Rull, Guillem (2016)
    Conference lecture
    Open Access
    We present TINTIN, a tool to perform efficient integrity checking of SQL assertions in SQL Server. TINTIN rewrites each assertion into a set of standard SQL queries that, given a set of insertions and deletions of tuples, ...
  • Requirement-driven creation and deployment of multidimensional and ETL designs 

    Jovanovic, Petar; Romero Moral, Óscar; Simitsis, Alkis; Abelló Gamazo, Alberto (Springer, 2012)
    Conference report
    Open Access
    We present our tool for assisting designers in the error-prone and time-consuming tasks carried out at the early stages of a data warehousing project. Our tool semi-automatically produces multidimensional (MD) and ETL ...
  • Towards a generic benchmarking platform for origin–destination flows estimation/updating algorithms: design, demonstration and validation 

    Antoniou, Constantinos; Barceló Bugeda, Jaime; Breen, Martijn; Bullejos, Manuel; Casas, Jordi; Cipriani, Ernesto; Ciuffo, Biagio; Djukic, Tamara; Hoogendoorn, Serge; Marzano, Vittorio; Montero Mercadé, Lídia; Nigro, Marialisa; Perarnau, Josep; Punzo, Vincenzo; Toledo, Tomer; van Lint, Hans (2016-05-01)
    Article
    Restricted access - publisher's policy
    Estimation/updating of origin-destination (OD) flows and other traffic state parameters is a classical, widely adopted procedure in transport engineering, both in off-line and in on-line contexts. Notwithstanding numerous ...
  • Coloured Petri net-based traffic collision avoidance system encounter model for the analysis of potential induced collisions 

    Tang, Jun; Piera, Miquel Angel; Guasch Petit, Antonio (2016-03-03)
    Article
    Open Access
    The Traffic Alert and Collision Avoidance System (TCAS) is a world-wide accepted lastresort means of reducing the probability and frequency of mid-air collisions between aircraft. Unfortunately, it is widely known that in ...
  • Individual-based modeling of tuberculosis in a user-friendly interface: Understanding the epidemiological role of population heterogeneity in a city 

    Prats Soler, Clara; Montañola Sales, Cristina; Gilabert Navarro, Joan-Francesc; Valls Ribas, Joaquim; Casanovas Garcia, Josep; Vilaplana, Cristina; Cardona Iglesias, Pere Joan; López Codina, Daniel (2016-01-01)
    Article
    Open Access
    © 2016 Prats, Montañola-Sales, Gilabert-Navarro, Valls, Casanovas-Garcia, Vilaplana, Cardona and López. For millennia tuberculosis (TB) has shown a successful strategy to survive, making it one of the world's deadliest ...
  • Incremental checking of OCL constraints with aggregates through SQL 

    Oriol Hilari, Xavier; Teniente López, Ernest (Springer, 2015)
    Conference report
    Restricted access - publisher's policy
    Valid states of data are those satisfying a set of constraints. Therefore, efficiently checking whether some constraint has been violated after a data update is an important problem in data management. We tackle this problem ...
  • Computing repairs for constraint violations in UML/OCL conceptual schemas 

    Oriol Hilari, Xavier; Teniente López, Ernest; Tort, Albert (Elsevier, 2015-06-25)
    Article
    Restricted access - publisher's policy
    Updating the contents of an information base may violate some of the constraints defined over the schema. The classical way to deal with this problem has been to reject the requested update when its application would lead ...

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