Emmanuel Pietriga

I am a visiting scientist at the World Wide Web Consortium (W3C), hosted in the USA by the MIT Laboratory for Computer Science (LCS). I am currently doing my postdoc, after having spent 3 years at Xerox Research Centre Europe and INRIA Rhône-Alpes preparing my PhD in Computer Science (focusing on Visual Programming Languages applied to XML document processing) which was awarded to me by the Institut National Polytechnique de Grenoble. I also hold an engineering degree in Computer Science and Automation from the Ecole Supérieure d'Ingénieurs d'Annecy (ESIA).

Main interests

• Visual languages and interactive environments
• Zoomable User Interfaces
• Semantic Web (RDF)
• Structured documents (XML)
• Document transformations and manipulations (XSLT, Circus-DTE, DOM, etc.)
• Graphical constraint solvers

Development Activities

• W3C - Semantic Web Advanced Development (SWAD)

  • Development of IsaViz, a visual environment for browsing and authoring RDF models, based on the ZVTM.

  • Design of GSS (Graph Stylesheets), a language for styling RDF graphs represented as node-link diagrams (implemented in IsaViz).

  • Maintenance of the RDF Validator.

• Other Open Source Projects

  • Development of ZVTM (Zoomable Visual Transformation Machine), a Zoomable User Interface (ZUI) toolkit implemented in Java (above Java2D), designed to ease the task of creating complex visual editors in which large amounts of objects have to be displayed, or which contain complex geometrical shapes that need to be animated.

  • Development of ZGRViewer, a 2.5D graph visualizer for AT&T GraphViz.

  • MathMLc2p, an XSLT transformation to translate MathML Content markup expressions into Presentation markup expressions automatically.

Publications and Talks

• José Kahan, Marja-Riitta Koivunen, Emmanuel Pietriga, Ralph Swick, Cross-Application Data Interaction: Shared Bookmarks and IsaViz, WWW 2003, the 12th World Wide Web Conference (Developer's day), Budapest, Hungary, 20-24 May 2003
• E. Pietriga, Environnements et langages de programmation visuels pour le traitement de documents structurés, Institut National Polytechnique de Grenoble (PhD thesis), Novembre 2002, Grenoble, France (available in French only)
• J.-Y. Vion-Dury, V. Lux and E. Pietriga, Experimenting with the Circus language for XML modeling and transformation, ACM Symposium on Document Engineering, Nov 2002, Mc Lean (VA), USA
• E. Pietriga, IsaViz: a Visual Environment for Browsing and Authoring RDF Models, WWW 2002, the 11th World Wide Web Conference (Developer's day), Honolulu, Hawaii, USA, 7-11 May 2002
• E. Pietriga, V. Quint and J.-Y. Vion-Dury, VXT: A Visual Approach to XML Transformations, ACM Symposium on Document Engineering, Atlanta (USA), November 2001
• E. Pietriga and J.-Y. Vion-Dury, A Formal Study of a Visual Language for the Visualization of Document Type Definition, IEEE Symposium on Visual Languages and Formal Methods (Human Centric Computing Languages and Environments), Stresa (Italy), September 2001
• E. Pietriga and J.-Y. Vion-Dury, VXT: Visual XML Transformer, IEEE Symposium on Visual/Multimedia Approaches to Programming and Software Engineering (Human Centric Computing Languages and Environments), Stresa (Italy), September 2001

Personal Web Site

You can learn more about me and my activities outside W3C on my own Web site, which I also use as a testbed for playing with W3C technologies: claribole.net.

Contact Information