Ara es mostren els items 19-38 de 40

    • 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
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      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
      Accés obert
      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 ...
    • Instruction fetch architectures and code layout optimizations 

      Ramírez Bellido, Alejandro; Larriba Pey, Josep; Valero Cortés, Mateo (2001-11)
      Article
      Accés obert
      The design of higher performance processors has been following two major trends: increasing the pipeline depth to allow faster clock rates, and widening the pipeline to allow parallel execution of more instructions. Designing ...
    • Intensive crossovers: Improving quality in a genetic query optimizer 

      Muntés Mulero, Víctor; Aguilar Saborit, Josep; Zuzarte, Calisto; Larriba Pey, Josep (International Centre for Numerical Methods in Engineering (CIMNE), 2006)
      Text en actes de congrés
      Accés obert
      Database schemas and user queries are continuously growing with the need for storing and accessing large amounts of structured information. Among the several proposals to deal with Large Join Query Problem, genetic optimizers ...
    • Introduction to graph databases 

      Larriba Pey, Josep; Martínez Bazán, Norbert; Domínguez Sal, David (2014-09-08)
      Capítol de llibre
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      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, ...
    • 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)
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      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 ...
    • Memory-, bandwidth-, and power-aware multi-core for a graph database workload 

      Trancoso, Pedro; Martínez Bazán, Norbert; Larriba Pey, Josep (Springer, 2011)
      Comunicació de congrés
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      Processors have evolved to the now de-facto standard multicore architecture. The continuous advances in technology allow for increased component density, thus resulting in a larger number of cores on the chip. This, in ...
    • Multi-vehicle route planning for efficient urban freight transport 

      Mrazovic, Petar; Eser, Elif; Ferhatosmanoglu, Hakan; Larriba Pey, Josep; Matskin, Mihhail (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés obert
      The urban parking spaces for loading/unloading are typically over-occupied, which shifts delivery operations to traffic lanes and pavements, increases traffic, generates noise, and causes pollution. We present a data ...
    • On the use of semantic blocking techniques for data cleansing and integration 

      Nin Guerrero, Jordi; Muntés Mulero, Víctor; Martínez Bazán, Norbert; Larriba Pey, Josep (IEEE Computer Society, 2007)
      Text en actes de congrés
      Accés obert
      Record Linkage (RL) is an important component of data cleansing and integration. For years, many efforts have focused on improving the performance of the RL process, either by reducing the number of record comparisons ...
    • Optimization of instruction fetch for decision support workloads 

      Ramírez Bellido, Alejandro; Larriba Pey, Josep; Navarro García, Carlos; Serrano, Xavier; Valero Cortés, Mateo; Torrellas, Josep (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      Instruction fetch bandwidth is feared to be a major limiting factor to the performance of future wide-issue aggressive superscalars. In this paper, we focus on database applications running decision support workloads. We ...
    • Parameter determination of ONN (Ordered Neural Networks) 

      Pont Tuset, Jordi; Medrano Gracia, Pau; Nin Guerrero, Jordi; Larriba Pey, Josep; Muntés Mulero, Víctor (2007)
      Report de recerca
      Accés obert
      The need for data privacy motivates the development of new methods that allow to protect data minimizing the disclosure risk without losing information. In this paper, we propose a new protection method for numerical data ...
    • Producer-consumer: the programming model for future many-core processors 

      Prat Pérez, Arnau; Domínguez Sal, David; Larriba Pey, Josep; Troncoso, Pedro (Springer, 2013)
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      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 ...
    • Put three and three together: Triangle-driven community detection 

      Prat Pérez, Arnau; Domínguez Sal, David; Brunat Blay, Josep Maria; Larriba Pey, Josep (Association for Computing Machinery (ACM), 2016-02-01)
      Article
      Accés obert
      Community detection has arisen as one of the most relevant topics in the field of graph data mining due to its applications in many fields such as biology, social networks, or network traffic analysis. Although the existing ...
    • Recurrent autoencoder with skip connections and exogenous variables for traffic forecasting 

      Herruzo Sánchez, Pedro; Larriba Pey, Josep (Proceedings of Machine Learning Research (PMLR), 2020)
      Comunicació de congrés
      Accés obert
      The increasing complexity of mobility plus the growing population in cities, together with the importance of privacy when sharing data from vehicles or any device, makes traffic forecasting that uses data from infrastructure ...
    • Semantic blocking for record linkage 

      Nin Guerrero, Jordi; Muntés Mulero, Víctor; Martínez Bazán, Norbert; Larriba Pey, Josep (IOS Press, 2007)
      Text en actes de congrés
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      Record Linkage (RL) is an important component of data cleaning and integration and data processing in general. For years, many efforts have focused on improving the performance of the RL process, either by reducing the ...
    • Social based layouts for the increase of locality in graph operations 

      Prat Pérez, Arnau; Domínguez Sal, David; Larriba Pey, Josep (2011)
      Article
      Accés restringit per política de l'editorial
      Graphs provide a natural data representation for analyzing the relationships among entities in many application areas. Since the analysis algorithms perform memory intensive operations, it is important that the graph ...
    • Software trace cache 

      Ramírez Bellido, Alejandro; Larriba Pey, Josep; Valero Cortés, Mateo (2005-01)
      Article
      Accés obert
      We explore the use of compiler optimizations, which optimize the layout of instructions in memory. The target is to enable the code to make better use of the underlying hardware resources regardless of the specific details ...
    • The effect of code reordering on branch prediction 

      Ramírez Bellido, Alejandro; Larriba Pey, Josep; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      Branch prediction accuracy is a very important factor for superscalar processor performance. The ability to predict the outcome of a branch allows the processor to effectively use a large instruction window, and extract a ...
    • Trace cache redundancy: red and blue traces 

      Ramírez Bellido, Alejandro; Larriba Pey, Josep; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      The objective of this paper is to improve the use of the hardware resources of the trace cache mechanism, reducing the implementation cost with no performance degradation. We achieve that by eliminating the replication of ...
    • Transistor count and chip-space estimation of simplescalar-based microprocessor model 

      Steinhaus, Marc; Kolla, Reiner; Larriba Pey, Josep; Ungerer, Theo; Valero Cortés, Mateo (2001)
      Text en actes de congrés
      Accés obert
      This paper proposes a chip space and transistor count estimation tool, which receives its input from the baseline architecture and the configuration file of the microarchitecture performance simulator sim-outorder of the ...