• A software reference architecture for semantic-aware big data systems 

      Nadal Francesch, Sergi; Herrero Otal, Víctor; Romero Moral, Óscar; Abelló Gamazo, Alberto; Franch Gutiérrez, Javier; Vansummeren, Stijn; Valerio, Danilo (2016-06-13)
      Article
      Accés obert
      Context: Big Data systems are a class of software systems that ingest, store, process and serve massive amounts of heterogeneous data, from multiple sources. Despite their undisputed impact in current society, their ...
    • Construcció de cubs de dades usant MapReduce sobre clústers 

      Herrero Otal, Víctor (Universitat Politècnica de Catalunya, 2014-01-22)
      Projecte/Treball Final de Carrera
      Accés obert
      En aquest projecte es posen a prova tres algorismes d'accés diferents contra una base de dades clau-valor com l'HBase per tal de trobar aquells factors que poden implicar un millor o pitjor rendiment de cada algorisme i ...
    • Evaluation of data placement optimizations in in-memory databases 

      Herrero Otal, Víctor (Universitat Politècnica de Catalunya, 2016-10-20)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
    • NOSQL design for analytical workloads: Variability matters 

      Herrero Otal, Víctor; Abelló Gamazo, Alberto; Romero Moral, Óscar (Springer, 2016)
      Text en actes de congrés
      Accés obert
      Big Data has recently gained popularity and has strongly questioned relational databases as universal storage systems, especially in the presence of analytical workloads. As result, co-relational alternatives, commonly ...
    • 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., ...