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The team

Project partners:

Polish-Japanese Institute of Information Technology (PJIIT), Warsaw, Poland

PJIIT (Polish-Japanese Institute of Information Technology)
is a high-profile, private university, located in Warsaw (Poland), focused on innovative developments in computer science, interactive media art and Japanese culture studies. PJIIT attempts to combine the Japanese strive to technological quality with Polish spirit for art, creativity and independence in both research and teaching: now the number ofstudents and about 3000 in six faculties (Computer Science, Information Management, New Media Art, Social Informatics, Japanese Culture, Interior Design). PJIIT is known in Poland and abroad for its innovative profile and technological developments in user-system interaction design, digital media art, robotics and otherapplication areas where IT (Information Technology) can be applied for societal and economic development.
PJIIT has participated in 3 6FP EU research projects, and was the coordinator of one such project (VIDE). The institute participates in several research projects funded from EU structural funds and other international funds. Now PJIIT has a robust IT infrastructure supporting didactic processes, including also e-learning, broadcasting of media on the Internet as well as advanced multimedia authoring environments. Participation in EU projects on telemedicine, artificial intelligence or speech processing allowed expanding its laboratory base and competency of the staff to the internationally-recognized level. Extensive use of handheld devices via wireless networks and latest developments in on-line social interaction led to establishing Social Informatics as an independent field of study, attracting students interested in human and social aspects of IT developments. The most recent research focus in PJIIT is advancing methods in HCI (Human-Computer Interaction), in particular developing innovative user interfaces based on augmented reality and laboratory usability testing of software applications in various contexts, including edutainment applications and computer games PJIIT graduates are famous for.

Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

EPFL is one of the two Ecoles Polytechniques fédérales in Switzerland. It has three missions: education, research and technology transfer at the highest international level. Associated with several specialised research institutes, the two EPFs form the EPF domain, which is directly dependent on the Federal Department of Home Affairs.
EPFL Distributed Information Systems Lab (LSIR, has worked extensively on various aspects of data stream management ranging from distributed storage to processing. An open source online stream data infrastructure has been developed in 2007 called Global Sensor Networks (GSN). GSN systems are already deployed for environments monitoring at SLF, EAWAG and EPFL. LSIR members have also a strong background and significant research contributions in trust management, information retrieval, distributed data management and peer-to-peer overlays. For example, OKKAM platform ( is one of the first entity-based web search engines,while P-grid P2P system ( is now being used in a range of applications such as document management, text retrieval and software engineering as storage platform and in flexibly coordinating distributed workflows and services. Additionally, LSIR members have long experience and significant research contributions in the areas of trust, reputation and incentive mechanisms.


Project team:

Project Scientific Manager

Adam Wierzbicki, Ph.D. 

Adam Wierzbicki received his Ph.D. degree from the Warsaw University of Technology and a habilitation title from the Institute of Systems Research of the Polish Academy of Sciences. He is currently employed at the Polish-Japanese Institute for Information Technology, where he has the position Full Professor and of Vice-Dean of the Department of Informatics. He is in expert in Peer-to-Peer computing. His current research interests focus on social informatics, in particular on trust management and fairness in distributed systems. He has published several papers on trust management and on applications of the theory of equity to providing fairness in open distributed systems, and is the author of a Springer book titled “Trust and Fairness in Open, Distributed Systems”. He is also interested in open collaboration, particularly using Wiki technology. Since November, 2011, Dr Wierzbicki leads the Reconcile project which is concerned with the development of tools for the evaluation of Web content credibility. The project is in partnership with the team of professor Karl Aberer from EPFL Lausanne.

Contact info:
Polish-Japanese Institute of Information Technology
Ul. Koszykowa 86
02-008 Warsaw, Poland
Web page:

Project Scientific Leader

Karl Aberer is a full professor for Distributed Information Systems at EPFL Lausanne, Switzerland, since 2000. Since 2005 he is the director of the Swiss National Research Center for Mobile Information and Communication Systems (NCCR-MICS, Prior to his current position, he was senior researcher at the Integrated Publication and Information Systems institute (IPSI) of GMD in Germany. He received his Ph.D. in mathematics in 1991 from the ETH Zürich. His research interests are on semantics and self- organization in information systems with applications in peer-to-peer search, semantic web, trust management and mobile and sensor networks.
He is or has been serving on the editorial boards of SIGMOD Record, VLDB Journal, ACM Transaction on Autonomous and Adaptive Systems and WorldWide Web Journal and been co-chairing  among others the ICDE, ISWC, MDM, ODBASE, P2P, VLDB and WISE conferences.


PJIIT team:

Katarzyna Abramczuk, sociologist, held PhD degree from Warsaw University, assistant professor in Department of Social and Economic Transformations at Institute of Political Sciences (Polish Academy of Sciences), coworker of the chair of Statistics, Demography and Mathematical Sociology in Institute of Sociology at University of Warsaw, coworker of Adaptive Behavior and Cognition research group at Max Planck Institute for Human Development. My interest include mathematical modeling of social phenomena, evolutionary game theory, mechanisms of reciprocity and trust, analytical theory of judgment and decision making, and cognitive psychology. 

Radoslaw Nielek is an assistant professor at Polish-Japanese Institute of Information Technology (PJIIT) Warsaw, Poland. He received his Bachelor's Degree in Production Engineering and Management from Szczecin University of Technology in 2004 and Master's Degree in Computer Science from PJIIT in 2007 and PhD degree from Polish-Japanese Institute of Information Technology. His research interests include social simulation, trust management and opinion mining.

Bogdan Księżopolski received his M.Sc. in computer physics from Maria Curie-Skłodowska University in Lublin and Ph.D Degree in computer science from Polish and Japanese Institute of Technology, Warsaw, Poland. He is currently a assistant professor in Polish and Japanese Institute of Technology and Institute of Computer Science at Maria Curie-Skłodowska University. He is author and co-author of more than 30 scientific articles in the field of computer security.


Wojciech Jaworski received his Ph.D. degree from the University of Warsaw. He is currently employed as Assistant Professor at the Institute of Informatics of the University of Warsaw. He is an expert in Natural Language Processing, Knowledge Representation and Machine Learning. His current research interests focuses on Categorial Grammars, Natural Language Understanding and applications of Natural Language Processing in social informatics. He has published several papers on relationship between rough sets and statistical learning theory, ontology-based knowledge extraction and classifier validation, and is the author of Search Engine for the Cuneiform Economic Documents Corpus. Since November, 2011, Dr Jaworski works for the Reconcile project which is concerned with the development of tools for the evaluation of Web content credibility.


Paulina Adamska received her Master's Degree in computer science from Polish-Japanese Institute of Information Technology in 2009. She is co-author of the middleware based on the generic Peer-to-Peer Protocol. Currently teacher, research assistant and PhD student at PJIIT. Apart from IT, she is also interested in linguistics-related topics, in particular Scandinavian languages.


   Michał Kąkol is a graduate of Warsaw School of Economics and Polish-Japanese Institute of Information Technology (PJIIT), currently a 1st year PhD student of Social Informatics at PJIIT. His last years professional experienced focused on web design as he worked as well at freelance as in corporate environments. At the moment working as a researcher focusing his interests on web content credibility assessment using data mining approach
Michał Jankowski-Lorek  Michał Jankowski-Lorek  received his Master's Degree in computer science from Polish-Japanese Institute of Information Technology. He is currently a PhD student at Social Informatics and an active member of several scientific research projects, e.g. Reconcile, Wikiteams etc.

Konrad Adamczyk is a student of Polish-Japanese Institute of Information Technologies, software engineer and web developer. During his work and research at PJIIT he co-created Peer-To-Peer Middleware, a generic peer-to-peer communication library and helped develop serveral projects from the realm of social informatics. He's also co-author of the first Polish semantic people search engine and a number of projects implementing crawling and data mining. His professional interests include also web development having created websites and portals using bleeding-edge technology. He currently works as researcher, CTO and consultant at several firms and ventures. 


EPFL team:

   Alexandra Olteanu is a second year PhD candidate in the Distributed Information Systems Laboratory (LSIR) at Ecole Polytechnique Federale de Lausanne (EPFL). Alexandra's work revolves around building automated, yet scalable and practical systems that support users in evaluating web content, while preserving their privacy. As such, her work lays at the intersection between a few research areas: Social Networks, P2P Systems, Recommender Systems, and Web Credibility and Quality.

Xin Liu is a postdoctoral researcher at the Distributed Information Systems Laboratory (LSIR) in the Swiss Federal Institute of Technology - Lausanne (EPFL). Before joining EPFL, Xin received his Ph.D. in Computer Science from Nanyang Technological University (NTU) in Singapore, supervised by Associate Professor Anwitaman Datta. His research interests include recommender system, trust and reputation management, social computing, distributed computing, etc.