Research

My research work focuses on applications of machine learning and data towards efficient computing, quality of service on web-services, and autonomic Cloud applications management. I have been working at the LARCA Research Group (Laboratori d'Algorí­smica Relacional, Complexitat i Aprenentatge) at LSI-UPC and also in the HPC-Autonomic (High Performance Computing Group) at DAC-UPC. Also I am at the Barcelona Supercomputing Center BSC, in the group of Autonomic Business Systems, part of the Microsoft Research team.

Projects

Grants Received for Study and Research

  • FPI-MICINN 2009 – 2013 (Spanish Ministry of Science) : Ph.D. studies, at LARCA-UPC research group.
  • ICE 2006 – 2007 (Institute for Education Sciences – UPC) : Degree Thesis, at Autonomic-HPC research group.
  • BEQUES UNIVERS 2004 – 2007 (UPC) : Administrative support, at Facultat Informàtica de Barcelona (FIB).

Publications

Journals and Book Chapters
  1. Josep Ll. Berral, Nicolas Poggi, David Carrera, Aaron Call, Rob Reinauer, Daron Green. “ALOJA: A Framework for Benchmarking and Predictive Analytics in Big Data Deployments”. IEEE Transactions on Emerging Topics in Computing - Special Issue PP(99): 1-12 (2015). ISSN 2168-6750. arXiv:1511.02037. arXiv, DOI
  2. Luis Velasco, Adrian Asensio, Josep Lluis Berral, Edoardo Bonetto, Francesco Musumeci, Víctor López. “Elastic operations in federated datacenters for performance and cost optimization.” Elsevier Computer Communications 50: 142-151 (2014). ISSN 0140-3664. DOI
  3. Luis Velasco, Adrian Asensio, Alberto Castro, Josep Lluis Berral, David Carrera, Víctor López, Juan P. Fernández Palacios. “Cross-stratum orchestration and flexgrid optical networks for data center federations.” IEEE Network 27(6): 23-30 (2013). ISSN 0890-8044. DOI
  4. Josep Ll. Berral, Iñigo Goiri, Ramon Nou, Ferran Julià, Josep O. Fitó, Jordi Guitart, Ricard Gavaldà, Jordi Torres, “Toward Energy-Aware Scheduling Using Machine Learning” Energy-Efficient Distributed Computing Systems, Chapter 8. Editors: Albert Y. Zomaya, Young Choon Lee, July 2012. ISBN 9780470908754. PDF DOI
  5. Iñigo Goiri, Josep Ll. Berral, J. Oriol Fitó, Ferran Julià, Ramon Nou, Jordi Guitart, Ricard Gavaldà, Jordi Torres, “Energy-efficient and multifaceted resource management for profit-driven virtualized data centers” Future Generation Computer Systems.5-28, pp.718-731.05/2012. ISSN 0167-739X. DOI
  6. Nicolas Poggi, Toni Moreno, Josep Lluis Berral, Ricard Gavaldà, Jordi Torres, “Self-Adaptive Utility-Based Web Session Management.” Computer Networks.53-10, pp.1712-1721.07/2009. ISSN 1389-1286. DOI
  7. Nicolas Poggi, Toni Moreno, Josep Ll. Berral, Ricard Gavaldà and Jordi Torres, “Web Customer Modeling for Automated Session Prioritization on High Traffic Sites.” Lecture notes in computer science.4511, pp.450-454.06/2007. ISSN 0302-9743. DOI
Publications in International Conferences and Workshops
  1. Josep Ll. Berral, Nicolas Poggi. “Database Integrated Analytics using R: Initial Experiences with SQL-Server + R”. The IEEE International Conference on Data Mining (IEEE ICDM 2016), Barcelona, Spain, December 12-15 2016. PDF, DOI, PPT
  2. Nicolas Poggi, Josep Ll. Berral, Thomas Fenech, David Carrera, Jose Blakeley, Umar Farooq Minhas, and Nikola Vujic. “The state of SQL-on-Hadoop in the Cloud”. The IEEE International Conference on Big Data (IEEE BigData 2016), Washington DC, USA, December 5-8 2016. DOI
  3. Nicolas Poggi, Josep Ll. Berral, David Carrera. “ALOJA: a Benchmarking and Predictive Platform for Big Data Performance Analysis”. The Sixth Workshop on Big Data Benchmarking (6th WBDB). June 16-17, 2015 in Toronto, Canada. DOI
  4. Nicolas Poggi, Josep Ll. Berral, David Carrera, Aaron Call, Rob Reinauer, Nikola Vujic, Daron Green, José Blakeley, Fabrizio Gagliardi. “From Performance Profiling to Predictive Analytics while Evaluating Hadoop Cost-Efficiency in ALOJA”. The IEEE International Conference on Big Data (IEEE BigData 2015), Santa Clara (CA), USA, Oct. 29-Nov. 1 2015. DOI
  5. Josep Ll. Berral, Nicolas Poggi, David Carrera, Aaron Call, Rob Reinauer, Daron Green. “ALOJA-ML: A Framework for Automating Characterization and Knowledge Discovery in Hadoop Deployments”. The 21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2015), Sydney, Australia, August 10-13 2015. arXiv:1511.02030. arXiv, DOI, PPT
  6. Josep Ll. Berral, Íñigo Goiri, Thu Nguyen, Ricard Gavaldà, Jordi Torres, Ricardo Bianchini. “Building Low-Cost Green DataCenters”. The International Conference on Distributed Computer Systems (ICDCS 2014). PDF DOI, PPT
  7. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “Power-aware Multi-DataCenter Management using Machine Learning”. The 42rd International Conference on Parallel Processing - Workshop on Power-aware Algorithms, Systems, and Architectures (ICPP - PASA), 2013. PDF, DOI, PPT
  8. Luis Velasco, Adrià Asensio, Josep Ll. Berral, Alberto Castro, Victor López, “Towards a Carrier SDN: An example for Elastic Inter-Datacenter Connectivity”. European Conference on Optical Communication (ECOC), 2013. DOI
  9. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “Empowering Automatic Data-Center Management with Machine Learning”. The 28th ACM Symposium on Applied Computing (SAC 2013) Data-Mining track, Coimbra, Portugal, March 18-22 2013. PDF, DOI, Extended PDF
  10. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “Adaptive Scheduling on Power-Aware Managed Data-Centers using Machine Learning”. The IEEE International Conference on GRID Computing (GRID 2011), Lyon, France, September 22-23 2011. PDF, DOI, PPT
  11. Iñigo Goiri, J. Oriol Fitó, Ferran Julià, Ramón Nou, Josep Ll. Berral, Jordi Guitart, and Jordi Torres. “Multifaceted Resource Management for Dealing with Heterogeneous Workloads in Virtualized Data Centers ”. The 11th ACM/IEEE International Conference on Grid Computing (GRID 2010), Brussels, Belgium, October 25-29, 2010. DOI
  12. Iñigo Goiri, Ferran Julià , Ramón Nou, Josep Ll. Berral, Jordi Guitart and Jordi Torres. “Energy-aware Scheduling in Virtualized Datacenters”. IEEE International Conference on Cluster Computing (CLUSTER 2010), Heraclion (Creta), Greece, September 20 - 24, 2010. DOI
  13. Javier Alonso, Josep Ll. Berral, Ricard Gavaldà and Jordi Torres. “Adaptive on-line software aging prediction based on Machine Learning”. The 40th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2010), Chicago (IL), USA, June 28 - July 1, 2010. DOI
  14. Javier Alonso, Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “J2EE Instrumentation for software aging root cause application component determination with AspectJ”. 15th IEEE Workshop on Dependable Parallel, Distributed and Network-Centric Systems (DPDNS 2010), Atlanta (GA), USA, April 19-23 2010. DOI, PPT
  15. Josep Ll. Berral, Iñigo Goiri, Ramon Nou, Ferran Julià, Jordi Guitart, Ricard Gavaldà, Jordi Torres. “Towards energy-aware scheduling in data centers using machine learning”. 1st ACM/SIGCOM Intl. Conf. on Energy-Efficient Computing and Networking (eEnergy 2010), Passau, Germany, April 13-15 2010. PDF, DOI, PPT
  16. Josep Ll. Berral, Nicolas Poggi, Javier Alonso, Ricard Gavaldà, Jordi Torres, Manish Parashar. “Adaptive Distributed Mechanism Against Flooding Network Attacks Based on Machine Learning.” 1st ACM Workshop on Artificial Intelligence on Security (AISec 2008), Alexandria (VA), USA, October 27th 2008. PDF, DOI, PPT
  17. Jordi Torres, David Carrera, Vicenç Beltran, Nicolas Poggi, Josep Ll. Berral, Ricard Gavaldà, Eduard Ayguadé, Toni Moreno, Jordi Guitar, “Tailoring resources: Energy efficient consolidation strategy goes beyond virtualization.” The International Conference on Autonomic Computing (ICAC 2008), Chicago (IL), USA, 2 to 6 of July, 2008, IEEE International Conference on Autonomic Computing. DOI
  18. Nicolas Poggi, Josep Ll. Berral, Toni Moreno, Ricard Gavaldà, Jordi Torres, “Automatic Detection and Banning of Content Stealing Bots for E-commerce.” Workshop on Machine Learning in Adversarial Environments for Computer Security, British Columbia, Canada, December the 8th, 2007, The Neural Information Processing Systems (NIPS 2007) Foundation (Proceedings of the NIPS Machine Learning in Adversarial Environments for Computer Security 2007). PDF
  19. Toni Moreno, Nicolas Poggi, Josep Ll. Berral, Ricard Gavaldà and Jordi Torres, “Policy-based autonomous bidding for overload management in eCommerce websites.” Group Decision and Negotiation Meeting - GDN Section of INFORMS, Montreal, Canada, 14-1 of May, 2007, Group Decision and Negotiation, INFORMS (Proceedings of the Group Decision and Negotiation 2007, pages 162-166). PDF, LINK
  20. Nicolas Poggi, Toni Moreno, Josep Ll. Berral, Ricard Gavaldà and Jordi Torres, “Web Customer Modeling for Automated Session Prioritization on High Traffic Sites.” 11th International Conference on User Modeling (UM 2007), Corfu, Grece, 25-29 of June, 2007. User Modeling Inc. (Lecture Notes in Computer Science, Volumen 4511 pp.450-454.06/2007. ISSN 0302-9743, Springer). DOI
National Conferences
  • Josep Ll. Berral, Javier Alonso, Nicolas Poggi, Ricard Gavaldà, Manish Parashar, Jordi Torres, “Distributed Learning Mechanism Against Flooding Network Attacks.” XIX Jornadas de Paralelismo, Castelló, Spain, 17-19 of September, 2008. PDF, LINK
Invited Talks and Tutorials
  • Josep Ll. Berral. “A Quick View on Current Techniques and Machine Learning Algorithms for Big Data Analytics”. ICTON - Intl. Conf. Transparent Optical Networks. Trento, Italy, July 13th, 2016. DOI PPT
Technical Reports and Extended Versions
  1. Luis Velasco, Adrià Asensio, Josep Ll. Berral, Eduardo Bonetto, F. Musumeci, Victor López. “Elastic Operations in Federated Datacenters for Performance and Cost Optimization”. Research Report number: UPC-DAC-RR-CBA-2013-2, May 2013. LINK
  2. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “Modeling cloud resources using Machine Learning”. Research Report number: UPC-LSI-13-7-R, March 2013. LINK
  3. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “Empowering Automatic Data-Center Management with Machine Learning”. Extended version SAC 2013. Research Report number: UPC-LSI-13-1-R, January 2013. LINK
  4. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “Adaptive Scheduling on Power-Aware Managed Data-Centers using Machine Learning” Extended Version GRID 2011. Research Report number: UPC-LSI-11-7-R, July 2011. LINK
  5. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “'Living In Barcelona' Li-BCN Workload 2010” Research Report number: UPC-LSI-11-1-T, January 2011. LINK
  6. Josep Ll. Berral, Ricard Gavaldà, Jordi Torres. “An Integer Linear Programming Representation for DataCenter Power-Aware Management” Research Report number: UPC-LSI-10-21-R, November 2010. LINK
  7. Ferran Julià, Jordi Roldan, Ramon Nou, Oriol Fitó, Alex Vaqué, Iñigo Goiri, Josep Ll. Berral. “EEFSim: Energy Efficency Simulator” Research Report number: UPC-DAC-RR-CAP-2010-15, June 2010. LINK
  8. Nicolas Poggi, Toni Moreno, Josep Lluis Berral, Ricard Gavaldà, Jordi Torres. “Web customer modeling for automated session prioritization on high traffic sites.” Registered Version UM 2007. Research Report number UPC-DAC-RR-CAP-2006-23, November 2006. LINK
Demos and Seminars
  • J. Ll. Berral. “Big Data Analytics using Apache Spark”. BSC - RDA European Summer School Courses. Barcelona, Spain, May 26th, 2017. PDF
  • J. Ll. Berral. “Big Data Analytics using Apache Spark”. BSC - PRACE Advanced Training Courses. Barcelona, Spain, February 9th, 2017. PDF
  • J. Ll. Berral. “Power-aware Multi-DataCenter Management using Machine Learning”. UPC - Master in Information Technologies. Barcelona, Spain, October 9, 2013. PDF
  • J. Ll. Berral. “Adaption and Learning on Data-Centers and Cloud Systems”. UPC - European Master in Distributed Computing. Barcelona, Spain, May 13, 2011. PDF
  • J. Guitart, I. Goiri, F. Julià, M. Macías, D. Carrera, Y. Becerra, V. Beltran, J. Polo, D. de Nadal, U. Kiran, J.O. Fitó, G. Reig, R. Badia, J. Ejarque, E. Ayguadé, J. Alonso, J.Ll. Berral, R. Gavaldà, N. Poggi, and J. Torres. “EMOTIVE CLOUD: The BSC Engine for Cloud Solutions”. 6th IEEE International Conference on Autonomic Computing (ICAC 2009). Barcelona, Spain, June 15-19, 2009.
Publications with Academic Purposes
  • Josep Ll. Berral. “Self-Adaption and Learning on the Cloud: Since the Grid until Now.”. In: J. Torres, I. Goiri, M. Macias (Eds.), "Execution Environments for Distributed Computation Issues", Chapter 5, Pages 117-135. Lulu.com publisher, 2008. ISBN: 978-1-4092-1787-9.
Theses and Final Degree Project
  • Josep Lluís Berral García. “Improved Management of Data-Center Systems using Machine Learning” (Ph.D. Thesis on Computer Sciences) November 22th, 2013. PDF PPT
  • Josep Lluís Berral García. “Distributed Framework Against Flooding Attacks Based on Machine Learning” (M.Sc. Computer Architecture, Networks and Systems) July 8th, 2008.
  • Josep Lluís Berral García. “Sistema d'Admissió de Clients Autoadaptatiu en un entorn Web” (Final Degree on Informatics [5 year programme]) June 27th, 2007.
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