Now showing items 1-20 of 24

    • Artificial neural networks as emerging tools for earthquake detection 

      Rojas, Otilio; Otero Calviño, Beatriz; Alvarado, Leonardo; Mus, Sergi; Tous Liesa, Rubén (2019)
      Article
      Open Access
      As seismic networks continue to spread and monitoring sensors become more ef¿cient, the abundance of data highly surpasses the processing capabilities of earthquake interpretation analysts. Earthquake catalogs are fundamental ...
    • Assessing the participatory design of a project-based course on computer network applications 

      Freitag, Fèlix; Tous Liesa, Rubén; Navarro Moldes, Leandro
      Conference report
      Open Access
      New teaching methodologies which foster student involvement, such as project-based learning, are nowadays part of the study curriculum of many engineering schools. Project-based learning courses, however, often build upon ...
    • Automated curation of brand-related social media images with deep learning 

      Tous Liesa, Rubén; Gómez Parada, Mauro; Poveda, Jonatan; Cruz, Leonel; Wust, Otto; Makni, Mouna; Ayguadé Parra, Eduard (2018-10)
      Article
      Open Access
      This paper presents a work consisting in using deep convolutional neural networks (CNNs) to facilitate the curation of brand-related social media images. The final goal is to facilitate searching and discovering user-generated ...
    • CBIR - Content based information retrieval in Optical Biopsies 

      Tous Liesa, Rubén; Ferrer-Roca, Olga; Delgado Mercè, Jaime (2010)
      Conference report
      Restricted access - publisher's policy
      The present paper describes the design and usage of an Internet medical image search engine based on the queryby-example paradigm and the multimedia standard ISO-15938-12:2008. The system, which allows combining Content ...
    • Distributed training of deep neural networks with spark: The MareNostrum experience 

      Cruz, Leonel; Tous Liesa, Rubén; Otero Calviño, Beatriz (Elsevier, 2019-07-01)
      Article
      Restricted access - publisher's policy
      Deployment of a distributed deep learning technology stack on a large parallel system is a very complex process, involving the integration and configuration of several layers of both, general-purpose and custom software. ...
    • Dynamic configuration of partitioning in spark applications 

      Gounaris, Anastasios; Kougka, Georgia; Tous Liesa, Rubén; Tripiana, Carlos; Torres Viñals, Jordi (2017-07-01)
      Article
      Open Access
      Spark has become one of the main options for large-scale analytics running on top of shared-nothing clusters. This work aims to make a deep dive into the parallelism configuration and shed light on the behavior of parallel ...
    • How MPEG Query Format enables advanced multimedia functionalities 

      Carreras Coch, Anna; Tous Liesa, Rubén; Delgado Mercè, Jaime (2009)
      Conference report
      Open Access
      In December 2008, ISO/IEC SC29WG11 (more commonly known as MPEG) published the ISO/IEC 15938-12 standard, i.e. the MPEG Query Format (MPQF), providing a uniform search&retrieval interface for multimedia repositories. While ...
    • La Influencia del orden de las preguntas en los exámenes de primer curso 

      López Álvarez, David; Cortés Martínez, Jordi; Fernández Barta, Montserrat; Parcerisa Bundó, Joan Manuel; Tous Liesa, Rubén; Tubella Murgadas, Jordi (Universitat Jaume I. Escola Superior de Tecnologia i Ciències Experimentals, 2013-07-10)
      Conference report
      Open Access
      El orden de las preguntas en un examen no debería tener influencia en sus resultados. Sin embargo, los autores tenemos la sensación de que los estudiantes de primero suelen ser secuenciales a la hora de resolver los ...
    • JPSearch: new international standard providing interoperable framework for image search and sharing 

      Yoon, Kyoungro; Kim, Youngseop; Park, Je-Ho; Delgado Mercè, Jaime; Yamada, Akio; Dufaux, Frederic; Tous Liesa, Rubén (2012-08)
      Article
      Restricted access - publisher's policy
      For the last 15 years, there have been various research and great advances in the field of content-based search and retrieval of images. In this paper, we present an overview of the JPSearch Standard, which is a recently ...
    • Long short-term memory networks for earthquake detection in Venezuelan regions 

      Mus León, Sergi; Gutiérrez Escobar, Norma; Tous Liesa, Rubén; Otero Calviño, Beatriz; Cruz de la Cruz, Stalin Leonel; Llácer Giner, David; Alvarado Bermúdez, Leonardo; Rojas, Otilio (Springer, 2019)
      Conference lecture
      Open Access
      Reliable earthquake detection and location algorithms are necessary to properly catalog and analyze the continuously growing seismic records. This paper reports the results of applying Long Short-Term Memory (LSTM) networks ...
    • Modelo en red de los contenidos mediáticos en la era de los dispositivos inteligentes 

      Morales Morante, Luís Fernando; Mas Manchón, Lluís; Tous Liesa, Rubén (2016-01-01)
      Article
      Open Access
      The changes in the information technologies of the last two decades, represented by the democratization of the Internet and the availability of portable and intelligent handhelds, is associated with new business, communication ...
    • Multimedia big data computing for in-depth event analysis 

      Tous Liesa, Rubén; Torres Viñals, Jordi; Ayguadé Parra, Eduard (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      While the most part of ”big data” systems target text-based analytics, multimedia data, which makes up about 2/3 of internet traffic, provide unprecedented opportunities for understanding and responding to real world ...
    • Query by image medical training: optical biopsy with confocal endoscopy (OB-CEM) 

      Ferrer-Roca, Olga; Duval, Vinicius; Delgado Mercè, Jaime; Rolim, Claudio; Tous Liesa, Rubén (2010)
      Conference report
      Open Access
      The use of Optical Biopsies-OB (in the present case Confocal endomicroscopy-CEM) is limited due to difficulties to interpret images. The OB-CEM are taken by endoscopists, not trained in microscopic morphology which is ...
    • Query formats for multimedia applications ISO/IEC 15938-12 (MPEG Query Format) & ISO/IEC 24800 (JPSearch) 

      Tous Liesa, Rubén (2009)
      Conference report
      Restricted access - publisher's policy
      Digital images are being generated, distributed and stored worldwide at an ever increasing rate. This is increasing the urgency of solving and standardizing solutions for challenging questions surrounding image repositories. ...
    • Real-time logo detection in brand-related social media images 

      Orti, Oscar; Tous Liesa, Rubén; Gómez Parada, Mauro; Poveda, Jonatan; Cruz de la Cruz, Stalin Leonel; Wust, Otto (Springer, 2019)
      Conference report
      Open Access
      This paper presents a work consisting in using deep convolutional neural networks (CNNs) for real-time logo detection in brand-related social media images. The final goal is to facilitate searching and discovering ...
    • Reliable scholarly objects search and interchange framework 

      Torres Padrosa, Víctor; Tous Liesa, Rubén; Delgado Mercè, Jaime (2010)
      Conference report
      Open Access
      Authors of scholarly objects might fear that there is a potential risk that the original material they publish in online sites or that they submit for evaluation to scientific journals or conferences is used by others as ...
    • Spark deployment and performance evaluation on the MareNostrum supercomputer 

      Tous Liesa, Rubén; Gounaris, Anastasios; Tripiana, Carlos; Torres Viñals, Jordi; Girona Turell, Sergi; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Becerra Fontal, Yolanda; Carrera Pérez, David; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      In this paper we present a framework to enable data-intensive Spark workloads on MareNostrum, a petascale supercomputer designed mainly for compute-intensive applications. As far as we know, this is the first attempt to ...
    • Standardized interoperable image retrieval 

      Döller, Mario; Stegmaier, Florian; Kosch, Harald; Tous Liesa, Rubén; Delgado Mercè, Jaime (2010)
      Conference report
      Restricted access - publisher's policy
      Digital still images are generated, distributed and stored worldwide at an ever increasing rate. Yet, the large number of available metadata description formats prevents consistent and efficient access to image repositories. ...
    • Standards for query formalization in mobile visual search 

      Tous Liesa, Rubén; Delgado Mercè, Jaime (2011)
      Conference report
      Open Access
      The research around visual search is gaining relevance due to the evolution in the generation and usage of digital images. A signifi cant push comes from the mobile visual search topic, due to the widespread proliferation ...
    • Standards for query formalization in mobile visual search 

      Tous Liesa, Rubén; Delgado Mercè, Jaime (Springer, 2012-05-04)
      Part of book or chapter of book
      Restricted access - publisher's policy
      The research around visual search is gaining relevance due to the evolution in the generation and usage of digital images. A significant push comes from the mobile visual search topic, due to the widespread proliferation ...