Ara es mostren els items 72-82 de 82

    • Table identification and reconstruction in spreadsheets 

      Koci, Elvis; Thiele, Maik; Romero Moral, Óscar; Lehner, Wolfgang (Springer, 2017)
      Text en actes de congrés
      Accés obert
      Spreadsheets are one of the most successful content generation tools, used in almost every enterprise to perform data transformation, visualization, and analysis. The high degree of freedom provided by these tools results ...
    • Table recognition in spreadsheets via a graph representation 

      Koci, Elvis; Thiele, Maik; Lehner, Wolfgang; Romero Moral, Óscar (2018)
      Text en actes de congrés
      Accés obert
      Spreadsheet software are very popular data management tools. Their ease of use and abundant functionalities equip novices and professionals alike with the means to generate, transform, analyze, and visualize data. As a ...
    • The knowledge graph lifecycle in NTT DATA 

      Flores Herrera, Javier de Jesús; Jamin, Emmanuel; Nadal Francesch, Sergi; Romero Moral, Óscar (CEUR-WS.org, 2022)
      Comunicació de congrés
      Accés obert
      The Semantic Business Unit (SEMBU) in NTT DATA aims to increase the semantic interoper ability and accessibility of European institutions’ data projects by following Linked Open Data (LOD) principles to build controlled ...
    • TopoGraph: an end-to-end framework to build and analyze graph cubes 

      Ghrab, Amine; Romero Moral, Óscar; Skhiri, Sabri; Zimányi, Esteban (2021-02)
      Article
      Accés obert
      Graphs are a fundamental structure that provides an intuitive abstraction for modeling and analyzing complex and highly interconnected data. Given the potential complexity of such data, some approaches proposed extending ...
    • Towards exploratory OLAP on linked data 

      Abelló Gamazo, Alberto; Gallinucci, Enrico; Golfarelli, Matteo; Rizzi Bach, Stefano; Romero Moral, Óscar (2016)
      Text en actes de congrés
      Accés obert
      In the context of exploratory OLAP, coupling the information wealth of linked data with the precision and detail of corporate data can greatly improve the effectiveness of the decision-making process. In this paper we ...
    • Towards information profiling: data lake content metadata management 

      Al-serafi, Ayman Mounir Mohamed; Abelló Gamazo, Alberto; Romero Moral, Óscar; Calders, Toon (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés obert
      There is currently a burst of Big Data (BD) processed and stored in huge raw data repositories, commonly called Data Lakes (DL). These BD require new techniques of data integration and schema alignment in order to make the ...
    • Towards next generation BI systems : the analytical metadata challenge 

      Varga, Jovan; Romero Moral, Óscar; Pedersen, Torben; Thomsen, Christian (Springer, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Next generation Business Intelligence (BI) systems require integration of heterogeneous data sources and a strong user-centric orientation. Both needs entail machine-processable metadata to enable automation and allow end ...
    • Towards scalable data discovery 

      Flores Herrera, Javier de Jesús; Nadal Francesch, Sergi; Romero Moral, Óscar (OpenProceedings, 2021)
      Comunicació de congrés
      Accés obert
      We study the problem of discovering joinable datasets at scale. We approach the problem from a learning perspective relying on profiles. These are succinct representations that capture the underlying characteristics of the ...
    • Tuning small analytics on Big Data: Data partitioning and secondary indexes in the Hadoop ecosystem 

      Romero Moral, Óscar; Herrero Otal, Víctor; Abelló Gamazo, Alberto; Ferrarons, Jaume (2015-12)
      Article
      Accés obert
      In the recent years the problems of using generic storage (i.e., relational) techniques for very specific applications have been detected and outlined and, as a consequence, some alternatives to Relational DBMSs (e.g., ...
    • Using semantic web technologies for exploratory OLAP: A survey 

      Abelló Gamazo, Alberto; Romero Moral, Óscar; Pedersen, Torben; Berlanga, Rafael; Nebot, Victoria; Aramburu, María José; Simitsis, Alkis (2015-02-01)
      Article
      Accés obert
    • XLIndy: interactive recognition and information extraction in spreadsheets 

      Koci, Elvis; Kuban, Dana; Luetting, Nico; Olwig, Dominik; Thiele, Maik; Gonsior, Julius; Lehner, Wolfgang; Romero Moral, Óscar (Association for Computing Machinery (ACM), 2019)
      Text en actes de congrés
      Accés obert
      Over the years, spreadsheets have established their presence in many domains, including business, government, and science. However, challenges arise due to spreadsheets being partially-structured and carrying implicit ...