El grup DAMA-UPC s'especialitza en la gestió de grans volums de dades amb especial èmfasi en el rendiment i la qualitat de les dades. Té en compte les necessitats del kernel de la base de dades, centrant-se especialment en l'optimitzador i el motor d'execució, o el repositori de dades bàsic ubicat per sobre del sistema de fitxers del SO. Les seves habilitats permeten la millora del rendiment en aplicacions executades amb les dades en memòria i en aplicacions executades amb les dades a disc.

DAMA-UPC és membre de la Xarxa IT pertanyent al Departament d'Industria de la Generalitat de Catalunya des del començament del 2005.

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Recent Submissions

  • Introduction to graph databases 

    Larriba Pey, Josep; Martínez Bazán, Norbert; Dominguez Sal, David (2014-09-08)
    Part of book or chapter of book
    Restricted access - publisher's policy
    The use of graphs in analytic environments is getting more and more widespread, with applications in many different environments like social network analysis, fraud detection, industrial management, knowledge analysis, ...
  • High quality, scalable and parallel community detection for large real graphs 

    Prat Pérez, Arnau; Dominguez Sal, David; Larriba Pey, Josep (Association for Computing Machinery (ACM), 2014)
    Conference report
    Restricted access - publisher's policy
    Community detection has arisen as one of the most relevant topics in the field of graph mining, principally for its applications in domains such as social or biological networks analysis. Different community detection ...
  • Automatic multi-partite graph generation from arbitrary data 

    Álvarez García, Sandra; Baeza Yates, Ricardo; Brisaboa, Nieves R.; Larriba Pey, Josep; Pedreira, Oscar (2014-08-22)
    Article
    Restricted access - publisher's policy
    In this paper we present a generic model for automatic generation of basic multi-partite graphs obtained from collections of arbitrary input data following user indications. The paper also presents GraphGen, a tool that ...
  • Two-way replacement selection 

    Martínez Palau, Xavier; Domínguez Sal, David; Larriba Pey, Josep (Association for Computing Machinery (ACM), 2010-09-01)
    Article
    Restricted access - publisher's policy
    The performance of external sorting using merge sort is highly dependent on the length of the runs generated. One of the most commonly used run generation strategies is Replacement Selection (RS) because, on average, it ...
  • Using genetic algorithms for attribute grouping in multivariate microaggregation 

    Balasch Masoliver, Jordi; Muntés Mulero, Víctor; Nin Guerrero, Jordi (2014-01-01)
    Article
    Open Access
    Anonymization techniques that provide k-anonymity suffer from loss of quality when data dimensionality is high. Microaggregation techniques are not an exception. Given a set of records, attributes are grouped into ...
  • A discussion on the design of graph database benchmarks 

    Domínguez Sal, David; Martínez Bazán, Norbert; Muntés Mulero, Víctor; Baleta Ferrer, Pedro; Larriba Pey, Josep (2011)
    Article
    Open Access
    Graph Database Management systems (GDBs) are gaining popularity. They are used to analyze huge graph datasets that are naturally appearing in many application areas to model interrelated data. The objective of this paper ...
  • Massive query expansion by exploiting graph knowledge bases for image retrieval 

    Guisado Gámez, Joan; Domínguez Sal, David; Larriba Pey, Josep (Association for Computing Machinery (ACM), 2014)
    Conference report
    Restricted access - publisher's policy
    Annotation-based techniques for image retrieval suffer from sparse and short image textual descriptions. Moreover, users are often not able to describe their needs with the most appropriate keywords. This situation is a ...
  • Producer-consumer: the programming model for future many-core processors 

    Prat Pérez, Arnau; Domínguez Sal, David; Larriba Pey, Josep; Troncoso, Pedro (Springer, 2013)
    Conference report
    Restricted access - publisher's policy
    The massive addition of cores on a chip is adding more pressure to the accesses to main memory. In order to avoid this bottleneck, we propose the use of a simple producer-consumer model, which allows for the temporary ...
  • Hybrid tables for speeding-up data accesses in hybrid database management systems 

    Guisado Gámez, Joan; Wolski, Antoni; Zuzarte, Calisto; Larriba Pey, Josep; Muntés Mulero, Víctor (2011)
    Conference lecture
    Open Access
  • Generalized median string computation by means of string embedding in vector spaces 

    Jiang, Xiaoyi; Wentker, Jöran; Ferrer Sumsi, Miquel (2012-11-01)
    Article
    Restricted access - publisher's policy
    In structural pattern recognition the median string has been established as a useful tool to represent a set of strings. However, its exact computation is complex and of high computational burden. In this paper we propose ...

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