Giorgos Zacharia

Giorgos Zacharia is a Ph.D. student in Computer Science at MIT, USA, and a member of the Center for Biological and Computational Learning of the McGovern Institute for Brain Research, and the Computer Science and Artificial Intelligence Laboratory. His research focuses on multitask learning, and learning algorithms for ranking and conjoint analysis problems. He holds an S.M. from the Software Agents group of the MIT Media Laboratory, where he did research in reputation mechanisms for online communities, dynamic pricing, and information retrieval. His research interests in Human Computer Interaction include e-learning and quantitative methods for evaluating interactions of networked communities. Zacharia was the Founder and Chief Scientist of Open Ratings Inc. where he lead research and development, to develop supply base risk management solutions using predictive data mining.

Publications

Distributed Construction through Participatory Design
Distributed Construction through Participatory Design
Panayiotis Zaphiris, Andrew Laghos, Giorgos Zacharia. © 2009. 5 pages.
This article presents an empirical study of an online learning community that collaborates with the course design team under the Participatory Design methodology. The different...
User-Centered Computer Aided Language Learning
User-Centered Computer Aided Language Learning
Panayiotis Zaphiris, Giorgos Zacharia. © 2006. 335 pages.
In the field of computer aided language learning (CALL), there is a need for emphasizing the importance of the user. User-Centered Computer Aided Language Learning presents...
Participatory Design of Interactive Computer-Based Learning Systems
Participatory Design of Interactive Computer-Based Learning Systems
Panayiotis Zaphiris, Giorgos Zacharia. © 2005. 7 pages.
We present an iterative evaluation methodology (as part of a participatory design methodology) employed in an online course for learning Modern Greek. Unlike other educational...
Distributed Construction through Participatory Design
Distributed Construction through Participatory Design
Panayiotis Zaphiris, Andrew Laghos, Giorgos Zacharia. © 2005. 5 pages.
This article presents an empirical study of an online learning community that collaborates with the course design team under the Participatory Design methodology. The different...
Distributed Construction through Participatory Design
Distributed Construction through Participatory Design
Panayiotis Zaphiris, Giorgos Zacharia, Meenakshi Sundaram Rajasekaran. © 2004. 16 pages.
We present the implementation of Distributed Constructionism (DC) through a Participatory Design (PD) methodology of an Online Learning community. The students collaborate on the...