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Short Bio
I am currently Senior Product Manager at ThousandEyes (part of Cisco). I am also an external collaborator at the Broadband Communications Research Group (CBA) from UPC BarcelonaTech, where I obtained my Ph.D. in Computer Science about network traffic analysis and classification using Deep Packet Inspection and Machine Learning techniques.Publications
Tomasz Bujlow, Valentín Carela-Español, Josep Solé-Pareta, and Pere Barlet-Ros: "A survey on web tracking: Mechanisms, implications, and defenses", Proceedings of the IEEE (2017) 105: 1476. [pdf][press][doi] ©IEEE
José Suárez-Varela, Pere Barlet-Ros, and Valentín Carela-Español: "A NetFlow/IPFIX implementation with OpenFlow", TERENA Networking Conference, Linz, Austria, May 2017. [pdf]
Valentín Carela-Español, Pere Barlet-Ros, Albert Bifet, and Kensuke Fukuda. "A streaming flow-based technique for traffic classification applied to 12+1 years of Internet traffic", Telecommunication Systems (2016) 63: 191. [pdf] [doi] ©Springer
Tomasz Bujlow, Valentín Carela-Español, and Pere Barlet-Ros: "Independent Comparison of Popular DPI Tools for Traffic Classification", Computer Networks (2015) 76: 75. [pdf] [doi] ©Elsevier
Valentín Carela-Español, Pere Barlet-Ros, Oriol Mula-Valls, and Josep Solé-Pareta: "An automatic traffic classification system for network operation and management", Network and Systems Management (2015) 23: 401. [pdf] [doi] ©Springer
Valentín Carela-Español:"Network Traffic Classification: From Theory to Practice", Ph.D. thesis, Universitat Politècnica de Catalunya BarcelonaTech, October 2014. [pdf][slides]
Valentín Carela-Español, Tomasz Bujlow, and Pere Barlet-Ros: "Is Our Ground-Truth for Traffic Classification Reliable?", In Proceedings of 15th International Passive and Active Measurement Conference (PAM 14), Los Angeles, CA, USA, March 2014 and Lecture Notes in Computer Science (2014) 8362: 98. [pdf] [doi] ©Springer
Tomasz Bujlow, Valentín Carela-Español, and Pere Barlet-Ros: "Extended Independent Comparison of Popular Deep Packet Inspection (DPI) Tools for Traffic Classification", Technical Report, UPC-DAC-RR-CBA-2014-1, Jan. 2014. [pdf]
Juan Molina, Valentín Carela-Español, Ralf Hoffmann, Klaus Degner, and Pere Barlet-Ros. "Empirical analysis of traffic to establish a profiled flow termination timeout", In Proceedings of 9th IEEE International Wireless Communications and Mobile Computing Conference (IWCMC-TRAC), Cagliari, Italy, July 2013. [pdf] [doi] ©IEEE
Tomasz Bujlow, Valentín Carela-Español, and Pere Barlet-Ros: "Comparison of Deep Packet Inspection (DPI) tools for traffic classification", Technical Report, UPC-DAC-RR-CBA-2013-3, June 2013. [pdf]
Dimitri Papadimitriou, Florin Coras, Alberto Rodriguez, Valentin Carela, Davide Careglio, Lluís Fàbrega, Pere Vilà, Piet Demeester: "Iterative Research Method Applied to the Design and Evaluation of a Dynamic Multicast Routing Scheme", FP7 FIRE/EULER 2012: pp. 107-126 [doi]
Valentín Carela-Español, Pere Barlet-Ros, Albert Cabellos-Aparicio, and Josep Solé-Pareta: "Analysis of the impact of sampling on NetFlow traffic classification", Computer Networks (2011) 55: 1083. [pdf] [doi] ©Elsevier
Valentín Carela-Español, Pere Barlet-Ros, Marc Solé-Simó, Alberto Dainotti, Walter de Donato, and Antonio Pesacapé: "K-dimensional trees for continuous traffic classification", In Proceedings of International Workshop on Traffic Monitoring and Analysis (TMA), Zurich, Switzerland, April 2010 and Lecture Notes in Computer Science (2010) 6003: 141 [pdf] [doi] ©Springer
Valentín Carela-Español, Pere Barlet-Ros, and Josep Solé-Pareta: "Traffic classification with Sampled NetFlow", Technical Report, UPC-DAC-RR-CBA-2009-6, Feb. 2009. [pdf]
Valentín Carela-Español and Pere Barlet-Ros: "Identification of network applications based on machine learning techniques", Technical Report, UPC-DAC-RR-CBA-2009-2, Feb. 2009. [pdf]
Pere Barlet-Ros, Valentín Carela-Español, Josep Solé-Pareta: "Identification of Network Applications based on Machine Learning Techniques", TERENA Networking Conference, Brugge, Belgium, May 2008. [pdf]
Research and Innovation Projects
EPIC: Improving Employability through Internationalisation and Collaboration (ERASMUS+, ref. 2017-1-DK01-KA203-034287, 2017-2020).
SHIELD: Securing against intruders and other threats through a NFV-enabled environment (H2020 - DS-04-2015, ref. 700199, 2016-2018).
SDN-Polygraph: Cloud-based Monitoring Service for Software Defined Networks (H2020 - SME instrument phase 2, ref. 726763, 2016-2018).
Polygraph: SDN-Visor (NEOTEC, ref. SNEO-20151456, 2016-2017).
COLIBRI: Collaboration and Innovation for Better, Personalized and IT-supported Teaching (ERASMUS+, ref. 2015-1-DK01-KA103-004251, 2014-2017).
NOMADS: A novel paradigm for network monitoring and data sharing (MINECO, TEC2011-27474, 2011-2015).
SDN-Polygraph: Cloud-based Visibility Service for Software Defined Networks (H2020 - SME instrument phase 1, ref. 673922, 2015).
POLYTEST: Experimentation with Network Polygraph in the Fed4FIRE testbed (Fed4FIRE-SME-3, 2015).
SMARTxAC: Traffic monitoring and analysis system for the Catalan RREN (CESCA, 2004-2013).
COST-TMA: Traffic monitoring and analysis (COST, 2008-2012).
Research Stays
Internship at the Fukuda Lab in the National Institute of Informatics (NII) in Tokyo, Japan, under the supervision of Prof. Kensuke Fukuda. March 2013 - August 2013.
Short-Term Scientific Mission at the University of Napoli Federico II, Napoli, under the supervision of Dr. Alberto Dainotti and Prof. Antonio Pescape. June 2009 - July 2009.
Supervised Master Students
Juan Molina Rodriguez (Master thesis)