• A parametrized algorithm that implements sequential, causal, and cache memory consistencies 

      Jiménez, Ernesto; Fernández Anta, Antonio; Cholvi Juan, Vicente
      In this paper, we present an algorithm that can be used to implement sequential, causal, or cache consistency in distributed shared memory (DSM) systems. For this purpose it includes a parameter that allows us to choose ...
    • Viewpoint-driven simplification using mutual information 

      Castelló Boscá, Pascual; Sbert Casasayas, Mateu; Chover Sellés, Miguel; Feixas, Miguel
      In this paper, a new viewpoint-based simplification approach is proposed for polygonal meshes. This approach is driven by an information-theoretic measure, viewpoint mutual information. Our algorithm applies the best ...
    • Optimizing the management of continuous level of detail models on GPU 

      Ripollés Mateu, Oscar Enrique; Chover Sellés, Miguel
      In this paper we present a new continuous multiresolution framework which has been developed in view of the outstanding evolution of hardware. Our interest not only focuses on exploiting GPUs possibilities, but also on ...
    • Contextualizing data warehouses with documents 

      Pérez Martínez, Juan Manuel; Berlanga Llavori, Rafael; Aramburu Cabo, María José; Pedersen, Torben Bach
      Current data warehouse and OLAP technologies are applied to analyze the structured data that companies store in databases. The context that helps to understand data over time is usually described separately in text-rich ...
    • Log-polar mapping template design: From task-level requirements to geometry parameters 

      Traver Roig, Vicente Javier; Pla Bañón, Filiberto
      The best parameters defining the geometry of a visual sensor generally depend on the particular visual task the sensor is intended to be used in. However, translating task requirements directly into low-level geometric ...
    • Stability bounds in networks with dynamic link capacities 

      Cholvi Juan, Vicente
      We address the problem of stability in networks where the link capacities can change dynamically. We show that every network running a greedy scheduling policy is universally stable at any injection rate r < 1 / (C d), ...
    • Viewpoint-based simplification using f-divergences 

      Castelló Boscá, Pascual; Sbert Casasayas, Mateu; Chover Sellés, Miguel; Feixas, Miguel
      We propose a new viewpoint-based simplification method for polygonal meshes, driven by several f-divergences such as Kullback-Leibler, Hellinger and Chi-Square. These distances are a measure of discrimination between ...
    • On the interconnection of message passing systems 

      Álvarez, Agustín; Arévalo, Sergio; Cholvi Juan, Vicente; Fernández Anta, Antonio; Jiménez, Ernesto
      One of the most important abstractions for designing distributed programs is the broadcast facility. In this paper, we study the interconnection of distributed message passing systems. We have shown that totally ordered ...
    • Analysis and placement of storage capacity in large distributed video servers 

      Cholvi Juan, Vicente; Segarra Sola, José Vicente
      In this paper, we study how to distribute storage capacity along a hierarchical system with cache-servers located at each node. This system is intended to deliver stored video streams in a video-on-demand way, ensuring ...
    • Evaluation of color prediction models in the decoration of ceramic tiles 

      Latorre Carmona, Pedro; Peris Fajarnés, Guillermo; Defez, B.; Tortajada, I.; Brusola Simon, Fernando
    • A Tool for the Creation and management of level-of-detail models for 3D applications 

      Ripollés Mateu, Oscar Enrique
      Real-time visualization of 3D scenes is a very important feature of many computer graphics solutions. Current environments require complex scenes which contain an increasing number of objects composed of thousands or ...
    • Methodology for the Implementation of Knowledge Management Systems 

      Chalmeta Rosaleñ, Ricardo; Grangel Seguer, Reyes
      Managing knowledge means managing the processes of creation, development, distribution and utilisation of knowledge in order to improve organisational performance and increase competitive capacity. However, serious ...
    • Level-of-Detail Triangle Strips for Deforming Meshes 

      Ramos Romero, Francisco; Chover Sellés, Miguel; Parus, Jindra; Kolingerova, Ivana
      Applications such as video games or movies often contain deforming meshes. The most-commonly used representation of these types of meshes consists in dense polygonal models. Such a large amount of geometry can be efficiently ...
    • Influence of color spaces over texture characterization 

      Rajadell Rojas, Olga; García Sevilla, Pedro
      Images are generally represented in the RGB color space. This is the model commonly used for most cameras and for displaying on computer screens. Nevertheless, the representation of color images using this color space has ...
    • Integrating data warehouses with web data : a survey 

      Pérez Martínez, Juan Manuel; Berlanga Llavori, Rafael; Aramburu Cabo, María José; Pedersen, Torben Bach
      This paper surveys the most relevant research on combining Data Warehouse (DW) and Web data. It studies the XML technologies that are currently being used to integrate, store, query, and retrieve Web data and their ...
    • Next-Generation Digital Earth: A position paper from the Vespucci Initiative for the Advancement of Geographic Information Science 

      Gould, Michael; Craglia, Max; Goodchild, Michael F.; Annoni, Alessandro; Camara, Gilberto; Kuhn, Werner; Mark, David; Masser, Ian; Maguire, David; Liang, Steve; Parsons, Ed
      This position paper is the outcome of a joint reflection by a group of international geographic and environmental scientists from government, industry, and academia brought together by the Vespucci Initiative for the ...
    • Safe and Economic Re-Use of Ontologies: A Logic-Based Methodology and Tool Support 

      Jiménez Ruiz, Ernesto; Cuenca Grau, Bernardo; Sattler, Ulrike; Schneider, Thomas; Berlanga Llavori, Rafael
      Driven by application requirements and using well-understood theoretical results, we describe a novel methodology and a tool for modular ontology design. We support the user in the safe use of imported symbols and in the ...
    • Learning and Forgetting with Local Information of New Objects 

      Sánchez Garreta, José Salvador; Vázquez, Fernando D.; Pla Bañón, Filiberto
      The performance of supervised learners depends on the presence of a relatively large labeled sample. This paper proposes an automatic ongoing learning system, which is able to incorporate new knowledge from the experience ...
    • Dante: A Self-Adapting Peer-to-Peer System 

      Cholvi Juan, Vicente; Rodero Merino, Luis; López, Luis; Fernández Anta, Antonio
      In this paper we introduce DANTE, an unstructured P2P system in which the topology of the underlying overlay network can be dynamically adapted to the system conditions. Such an adaption is performed by the peers in an ...
    • A Comparative Study of Simple Online Learning Strategies for Streaming Data 

      Millán Giraldo, Mónica; Sánchez Garreta, José Salvador
      Since several years ago, the analysis of data streams has attracted considerably the attention in various research fields, such as databases systems and data mining. The continuous increase in volume of data and the ...

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