Fields of expertise
MissionKarl Aberer works on foundations, algorithms and infrastructures for distributed information management, including peer-to-peer overlay networks, semantic interoperability, trust management and applications to scientific and sensor data management. His particular interest is on decentralized system architectures, self-organization mechanisms and emergent structures in decentralized information systems.
BiographyKarl Aberer received his PhD in mathematics in 1991 from the ETH Zürich. From 1991 to 1992 he was postdoctoral fellow at the International Computer Science Institute (ICSI) at the University of California, Berkeley. In 1992, he joined the Integrated Publication and Information Systems institute (IPSI) of GMD in Germany, where he was leading the research division Open Adaptive Information Management Systems. In 2000 he joined EPFL as full professor. Since 2005 he is the director of the Swiss National Research Center for Mobile Information and Communication Systems (NCCR-MICS, www.mics.ch). He is member of the editorial boards of VLDB Journal, ACM Transaction on Autonomous and Adaptive Systems and World Wide Web Journal. He has been consulting for the Swiss government in research and science policy as a member of the Swiss Research and Technology Council (SWTR) from 2003 - 2011.
CURRENT WORKenvironmental monitoring and participatory sensing:
Linking the virtual world to our physical environment through wireless sensing is one of the most fundamental developments that information technology has been undergoing. We are exploring techniques of managing data captured by sensors in a sustainable way, involving communities into the sensing tasks, and providing support for properly interpreting the captured data. More information
semantic interoperability in decentralized systems:
Probably one of the most persistent problems in information management is semantic interoperability. This is true for classical business computing as well as for community platforms. We believe that this problem is grounded in the question of how to establish communication among autonomous entities in a self-organizing way. More information
trust management and social networks :
A fundamental and pressing problem in our information infrastructure us the establishment of trusted relationships. Web advertising, social networking and community platforms are examples where trust and the related question of privacy are questions of primordial importance. We are investigating a wide range of statistical, machine learning and game-theoretic techniques for enabling trusted interaction in today's Web. More information
fair resource sharing in self-organizing systems :
Optimizing resource usage in a distributed system with autonomous participants comes down to the problem of assuring fairness of resource availability. We study distributed algorithms and mechanisms to enable fair resource sharing in a variety of environments, such as peer-to-peer systems, cloud computing platforms and community sensing. . More information
Karl Aberer's research is funded by the Swiss National Science Foundation, the European Commission, and industrial partners.
Towards Enabling Probabilistic Databases for Participatory Sensing2014. 10th IEEE International Conference on Collaborative Computing: Networking, Applications and Worksharing, Miami, Florida, United States, October 22–25, 2014. p. 114-123.
Special Issue on Privacy and Trust Management in Cloud and Distributed SystemsIEEE Transactions On Information Forensics And Security. 2013. DOI : 10.1109/Tifs.2013.2259431.
Analyzing Trust Management Impact to Optimal Adversarial Attacks in Recommender Systems2010
Using identity premium for cooperation enforcement and whitewashing prevention in rational environments2010
Privacy-aware and highly-available OSN profiles2010. 6th International Workshop on Collaborative Peer-to-Peer Systems (COPS 2010) at the 19th IEEE International Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises (WETICE 2010). p. 211-216. DOI : 10.1109/WETICE.2010.40.
Impact of Trust Management and Information Sharing to Adversarial Cost in Ranking Systems2010. 4th IFIP WG 11.11 International Conference on Trust Management (IFIPTM 2010), Morioka, Iwate, Japan, June 14-18, 2010.
Impact of Trust Management and Information Sharing to Adversarial Cost in Ranking Systems2010
Effective Usage of Computational Trust Models in Rational Environments2008. Web Intelligence Conference (WI-IAT'08), Sydney, Australia, December 9-12, 2008.
Probabilistic Estimation Quality Ratings of Online Services2008
Effective Usage of Computational Trust Models in Rational Environments2008
A Probabilistic Framework for Decentralized Management of Trust and Quality2007. Eleventh International Workshop on Cooperative Information Agents (CIA 2007), in cooperation with ACM SIGWeb, ACM SIGArt, ACM SIGKDD, and ACM SIGCHI, Delft University of Technology, Delft, The Netherlands, September 19 - 21, 2007. p. 328-342. DOI : 10.1007/978-3-540-75119-9_23.
Towards P2P-based Semantic Web Service Discovery with QoS Support2006. Workshop on Business Processes and Services (BPS), in conjunction with the Third International Conference on Business Process Management, Nancy, France, September 6-7, 2005, Nancy, France, September 6-7, 2005. p. 18-31. DOI : 10.1007/11678564_3.
Probabilistic Estimation of Peers’ Quality and Behaviors for Subjective Trust Evaluation2006
A Search Engine for QoS-enabled Discovery of Semantic Web Services2006
P2P Reputation Management : Probabilistic Estimation vs Social NetworksComputer Networks. 2006. DOI : 10.1016/j.comnet.2005.07.003.
QoS-based Service Selection and Ranking with Trust and Reputation Management2005. 2005 International Conference on Cooperative Information Systems (CoopIS), 31 Oct - 4 Nov 2005, Agia Napa, Cyprus., Agia Napa, Cyprus., 31 Oct - 4 Nov 2005. p. 446-483.
On the Convergence of Structured Search, Information Retrieval and Trust Management in Distributed Systems2005. Third German Conference on Multi-Agent System Technologies (MATES), Koblenz, September 11-13, 2005.
QoS-based Service Selection and Ranking with Trust and Reputation Management2005
Towards P2P-based Semantic Web Service Discovery with QoS Support2005
Possibilities for Managing Trust in P2P Networks2004
Beyond "Web of Trust": Enabling P2P E-commerce2003. IEEE Conference on E-Commerce (CEC'03), Newport Beach, California, USA, June 24-27, 2003.
Trust-Aware Cooperation2002. International Workshop on Mobile Teamwork, Vienna, 2002.
Trust-Aware Delivery of Composite Goods2002. International Workshop on Agents and Peer-To-Peer Computing (AP2PC 2002), Bologna, Italy, 2002.
Trust-Aware Delivery of Composite Goods2002
Managing Trust in a Peer-2-Peer Information System2001. Ninth International Conference on Information and Knowledge Management (CIKM 2001), Atlanta, Georgia, 2001. p. 310-317.
Managing Trust in a Peer-2-Peer Information System2001
Teaching & PhD
Doctoral program in computer and communication sciences
Doctoral Program Digital Humanities
PhD StudentsBanaei Mohammadreza, Duong Chi Thang, Elmas Tugrulcan, Foroutan Eghlidi Negar, Mohammadshahi Alireza, Rappaz Jérémie, Romanou Angeliki, Smeros Panagiotis,
Past EPFL PhD StudentsAgir Berker , Bonvin Nicolas , Budura Adriana , Catasta Michele , Cudré-Mauroux Philippe , Datta Anwitaman , Despotovic Zoran , Dubovitskaya Alevtina , Eberle Julien , Galuba Wojciech , Girdzijauskas Sarunas , Guo Tian , Gupta Amit , Haghani Parisa , Harkous Hamza , Hunkeler Urs , Jurca Oana Anca , Klemm Fabius , Narendula Rammohan , Nguyen Quoc Viet Hung , Nguyên Thành Tâm , Olteanu Alexandra , Proskurnia Julia , Punceva Magdalena , Ranvier Jean-Eudes Marie , Riahi Mehdi , Salehi Ali , Sathe Saket , Schmidt Roman , Skobeltsyn Gleb , Vu Hung Le , Wijaya Tri Kurniawan , Wu Jie , Yan Zhixian , Yerva Surender Reddy , Zhuang Hao ,
- Information Retrieval - Introduction
- Text-Based Information Retrieval (Boolean, Vector space, probabilistic)
- Inverted Files
- Distributed Retrieval
- Query Expansion
- Embedding models (LSI, word2vec)
- Link-Based Ranking
Mining Unstructured Data