Enviaments recents

  • A case study on cooperative car data for traffic state estimation in an urban network 

    Montero Mercadé, Lídia; Pacheco, Meritxell; Barceló Bugeda, Jaime; Homoceau, Silvio; Casanovas Garcia, Josep (2016)
    Text en actes de congrés
    Accés obert
    The use of Floating Car Data (FCD) as a particular case of Probe Vehicle Data (PVD) has been the object of extensive research for estimating traffic conditions, travel times and Origin to Destination trip matrices. It ...
  • Web simulation training environment for aircraft resource planning in wildfire events 

    Figueras Jové, Jaume; Guasch Petit, Antonio; Casanovas Garcia, Josep (2015)
    Comunicació de congrés
    Accés obert
    This poster presents a simulation tool developed in cooperation with the Catalonia firefighting authority to provide a training environment for firefighter air operations commanders in wildfire events. In case of a wildfire ...
  • Big data design 

    Abelló Gamazo, Alberto (Association for Computing Machinery (ACM), 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    It is widely accepted today that Relational databases are not appropriate in highly distributed shared-nothing archi- tectures of commodity hardware, that need to handle poorly structured heterogeneous data. ...
  • GROM: a general rewriter of semantic mappings 

    Mecca, Giansalvatore; Rull Fort, Guillem; Santoro, Donatello; Teniente López, Ernest (Universität Konstanz, 2016)
    Comunicació de congrés
    Accés obert
    We present GROM, a tool conceived to handle high-level schema mappings between semantic descriptions of a source and a target database. GROM rewrites mappings between the virtual, view-based semantic schemas, in terms of ...
  • TINTIN: a Tool for INcremental INTegrity checking of Assertions in SQL Server 

    Oriol Hilari, Xavier; Teniente López, Ernest; Rull, Guillem (2016)
    Comunicació de congrés
    Accés obert
    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)
    Text en actes de congrés
    Accés obert
    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 ...
  • Incremental checking of OCL constraints with aggregates through SQL 

    Oriol Hilari, Xavier; Teniente López, Ernest (Springer, 2015)
    Text en actes de congrés
    Accés obert
    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 ...
  • Verification and validation of UML artifact-centric business process models 

    Estañol Lamarca, Montserrat; Sancho Samsó, María Ribera; Teniente López, Ernest (Springer, 2015)
    Text en actes de congrés
    Accés obert
    This paper presents a way of checking the correctness of artifact-centric business process models defined using the BAUML framework. To ensure that these models are free of errors, we propose an approach to verify (i.e. ...
  • An integrated Computational framework for the estimation of dynamic OD trip matrices 

    Barceló Bugeda, Jaime; Montero Mercadé, Lídia (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Origin-Destination (OD) trip matrices describe the patterns of traffic behavior across the network and play a key role as primary data input to many traffic models. OD matrices are a critical requirement, either in static ...
  • 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 ...

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