Benjamin B. Bederson is a Professor of Computer Science and a past director of the Human-Computer Interaction Lab at the Institute for Advanced Computer Studies and iSchool at the University of Maryland. An ACM Distinguished Scientist, his research is on human computation, mobile device interfaces, interaction strategies, digital libraries, and children's education.  He is also Cofounder and Chief Scientist of Zumobi, a premium mobile app network.

He is well known for his work on Zoomable User Interfaces (ZUIs) since the mid-1990s including the Pad++ and Piccolo toolkits for zoomable and structured 2D graphics. That work led to his well-known applications around personal photo management (PhotoMesa), calendaring (DateLens) and hierarchical data visualization (SpaceTree). ZUIs have since become well established in industry in a wide range of domains including maps and mobile phones.

Ben is also well known for his work around children's educational technologies including his notable International Children's Digital Library. This website (at contains the largest freely available collection of children's books from around the world. It also represents the outcome of a range of research efforts including computer-vision based applications for text readability, as well as work in translation, and mobile access.

More recently, Ben has established himself in the area of human computation, an approach to combine human with computational effort to solve problems at a scale and quality that neither could accomplish alone. One important example of this work is his NSF and Google supported work on MonoTrans, a system that enables monolingual human speakers to collaboratively translate text.


Hans van Ditmarsch obtained a PhD at the University of Groningen in 2000. He lectured at the University of Otago from 2001-2007 and remained affiliated to that university until 2010. In 2007-2008 he was a CNRS researcher at IRIT (Institut de Recherche en Informatique de Toulouse) and in 2008 a Lorentz Fellow at NIAS (Netherlands Institute for Advanced Study in the Humanities and the Social Sciences). In 2009 he joined the University of Sevilla as a senior researcher on a five year (2009-2014) project on unconditionally secure protocols. From 2010-2013 he is an associated researcher at IMSc (Institute of Mathematical Sciences), Chennai. In December 2012 he will join LORIA, Nancy, as a CNRS senior researcher. His research is on the dynamics of knowledge, information-based security protocols, modal logics for belief revision, proof tools for epistemic logics, combinatorics, and computer and information science education.


Chris Wendt graduated as Diplom-Informatiker from the University of Hamburg, Germany, and subsequently spent a decade on software internationalization for a multitude of Microsoft products, including Windows, Internet Explorer, MSN and Windows Live - bringing these products to market with equal functionality worldwide. Since 2005 he is leading the program management and planning for Microsoft's Machine Translation development, responsible for Bing Translator and Microsoft Translator services. He is based at Microsoft headquarters in Redmond, Washington, USA.


Judith  Bishop  is  director  of  computer  science  at  Microsoft  Research,  where  she works  to  create  strong  links  between  Microsoft’s  research  groups  and  universities worldwide. Her expertise is in programming languages and distributed systems, with a strong practical bias and an interest in compilers and design patterns. She initiated the Software Engineering Innovation Foundation (SEIF) and is currently working on a  new  way  of  running  programs  in  browsers  (especially  F#)  and  on  promoting programming on mobile phones with TouchDevelop. Judith has authored more than 95 publications, including 15 books on programming languages that are available in six languages. She serves frequently on international editorial, program, and award
committees, and has received numerous awards and distinctions, including the IFIP Outstanding Service Award in 2009 and the IFIP Silver Core Award 2006 for service to  the  worldwide  computer  science  community.  She  is  a  fellow  of  the  British Computer Society, the Royal Society of South Africa, and other prestigious bodies. Judith received her PhD from the University of Southampton under David Barron in 1977. She was a professor at the Universities of the Witwatersrand and Pretoria, as well  as  a  Reader  at  Southampton  before  joining  Microsoft  in  2009.  She  is  an Honorary Professor at the University of Cape Town.