Ara es mostren els items 1-20 de 40

    • 3D-PP: A tool for discovering conserved three-dimensional protein patterns 

      Valdés Jiménez, Alejandro; Larriba Pey, Josep; Núñez Vivanco, Gabriel; Reyes Parada, Miguel (2019-06-28)
      Article
      Accés obert
      Discovering conserved three-dimensional (3D) patterns among protein structures may provide valuable insights into protein classification, functional annotations or the rational design of multi-target drugs. Thus, several ...
    • 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
      Accés obert
      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 ...
    • An inside analysis of a genetic-programming based optimizer 

      Muntés Mulero, Víctor; Aguilar Saborit, Josep; Larriba Pey, Josep; Zuzarte, Calisto; Markl, Volker (Institute of Electrical and Electronics Engineers, 2006)
      Text en actes de congrés
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      The use of evolutionary algorithms has been proposed as a powerful random search strategy to solve the join order problem. Specifically, genetic programming used in query optimization has been proposed as an alternative ...
    • Anonymizing data via polynomial regression 

      Nin Guerrero, Jordi; Pont Tuset, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor (2007)
      Text en actes de congrés
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      The amount of confidential information accessible through the Internet is growing continuously. In this scenario, the improvement of anonymizing methods becomes crucial to avoid revealing sensible information of individuals. ...
    • Automated construction and analysis of political networks via open government and media sources 

      García-Olano, Diego; Arias Vicente, Marta; Larriba Pey, Josep (2016)
      Text en actes de congrés
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      We present a tool to generate real world political networks from user provided lists of politicians and news sites. Additional output includes visualizations, interactive tools and maps that allow a user to better understand ...
    • 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
      Accés restringit per política de l'editorial
      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 ...
    • Branch classification to control instruction fetch in simultaneous multithreaded architectures 

      Knijnenburg, Peter M.W.; Ramírez Bellido, Alejandro; Latorre Salinas, Fernando; Larriba Pey, Josep; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2002)
      Text en actes de congrés
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      In simultaneous multithreaded architectures many separate threads are running concurrently, sharing processor resources, thereby realizing a high utilization rate of the available hardware. However, this also implies that ...
    • Cache-aware load balancing vs. cooperative caching for distributed search engines 

      Domínguez Sal, David; Pérez Casany, Marta; Larriba Pey, Josep (IEEE Computer Society Publications, 2009-06-25)
      Text en actes de congrés
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      In this paper we study the performance of a distributed search engine from a data caching point of view. We compare and combine two different approaches to achieve better hit rates: (a) send the queries to the node which ...
    • CIGO! Mobility management platform for growing efficient and balanced smart city ecosystem 

      Mrazovic, P.; Rubia Galera, Ivan de la; Urmeneta, J.; Balufo, C.; Tapias Guillen, Ricard; Matskin, M.; Larriba Pey, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
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      The massive amount of tourists, citizens and traffic in big cities usually collapse busy areas causing transport inefficiency, unbalanced economic growth, crime, and nuisance among citizens and visitors. Therefore, the ...
    • Code layout optimizations for transaction processing workloads 

      Ramírez Bellido, Alejandro; Barroso, Luiz A; Gharachorloo, Kourosh; Cohn, Robert; Larriba Pey, Josep; Lowney, P. Geoffrey; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2001)
      Text en actes de congrés
      Accés obert
      Commercial applications such as databases and Web servers constitute the most important market segment for high-performance servers. Among these applications, on-line transaction processing (OLTP) workloads provide a ...
    • Cooperative cache analysis for distributed search engines 

      Domínguez Sal, David; Pérez Casany, Marta; Larriba Pey, Josep (2010)
      Article
      Accés restringit per política de l'editorial
      In this paper, we study the performance of a distributed search engine from a data caching point of view using statistical tools on a varied set of configurations. We study two strategies to achieve better performance: ...
    • Design and evaluation of tridiagonal solvers for vector and parallel computers 

      Larriba Pey, Josep (Universitat Politècnica de Catalunya, 1995-03-10)
      Tesi
      Accés obert
    • DEX: High-performance exploration on large graphs for information retrieval 

      Martínez Bazán, Norbert; Muntés Mulero, Víctor; Gómez Villamor, Sergio; Nin Guerrero, Jordi; Sánchez Martínez, Mario; Larriba Pey, Josep (2007)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Link and graph analysis tools are important devices to boost the richness of information retrieval systems. Internet and the existing social networking portals are just a couple of situations where the use of these tools ...
    • Efficient graph management based on bitmap indices 

      Martínez Bazán, Norbert; Muntés Mulero, Víctor; Gómez Villamor, Sergio; Domínguez Sal, David; Águila Lorente, Miguel Ángel; Larriba Pey, Josep (Association for Computing Machinery (ACM), 2012)
      Text en actes de congrés
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      The increasing amount of graph like data from social networks, science and the web has grown an interest in analyzing the relationships between different entities. New specialized solutions in the form of graph databases, ...
    • Fetching instruction streams 

      Ramírez Bellido, Alejandro; Santana Jaria, Oliverio J.; Larriba Pey, Josep; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2002)
      Text en actes de congrés
      Accés obert
      Fetch performance is a very important factor because it effectively limits the overall processor performance. However there is little performance advantage in increasing front-end performance beyond what the back-end can ...
    • High quality, scalable and parallel community detection for large real graphs 

      Prat Pérez, Arnau; Domínguez Sal, David; Larriba Pey, Josep (Association for Computing Machinery (ACM), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...
    • Hybrid in-memory and on-disk tables for speeding-up table accesses 

      Guisado Gámez, Joan; Wolski, Antoni; Zuzarte, Calisto; Larriba Pey, Josep; Muntés Mulero, Víctor (Springer, 2010)
      Text en actes de congrés
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      Main memory database management systems have become essential for response-time-bounded applications, such as those in telecommunications systems or Internet, where users frequently access a table in order to get information ...
    • 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)
      Comunicació de congrés
      Accés obert
    • Improving microaggregation for complex record anonymization 

      Pont Tuset, Jordi; Nin Guerrero, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor (Springer Verlag, 2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Microaggregation is one of the most commonly employed microdata protection methods. This method builds clusters of at least k original records and replaces the records in each cluster with the centroid of the cluster. ...
    • Increasing polynomial regression complexity for data anonymization 

      Nin Guerrero, Jordi; Pont Tuset, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor (IEEE Computer Society, 2007)
      Text en actes de congrés
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      Pervasive computing and the increasing networking needs usually demand from publishing data without revealing sensible information. Among several data protection methods proposed in the literature, those based on linear ...