I recently joined Yahoo! Research in Barcelona.

Prior to that I was a visiting professor at the Universidad Carlos III in Madrid, Spain, in the DEI lab where I was doing research and contributing to set up a new graduate program on Interactive Media. Prior to this, I was Senior Research Scientist at Telefonica Research (also in Madrid), where I set up and managed a group on Data Mining and User Modeling. Before that, I was Scientific Manager and Senior Researcher at IDIAP Research Institute (Dalle Molle Institute for Perceptual Artificial Intelligence) in Switzerland. Part of my duties at IDIAP included the scientific management of the AMI project (Augmented Multiparty Interaction), leading the Human Machine Interaction unit of IM2 (Interactive Multimodal Information Management), and working on research in computer vision and multimedia processing. AMI is an Integrated Project funded by the European Union with 15 partners across Europe, IM2 is a Swiss National Centre of Competence in Research (NCCR) headed by IDIAP, and IDIAP is a private non-for-profit research institute affiliated with EPFL and University of Geneva.

From October of 2003 until October of 2006 I worked at FXPAL Japan, Fuji Xerox ( Nakai Research Center) near Tokyo, Japan ( FXPAL is the FX lab in California). At FXPAL Japan I held a research position and lead initiatives in Multimedia Analysis and Interaction.

In June and July of 2003 I worked at the Center for Web Research at Universidad de Chile in Santiago de Chile on a research project with Javier Ruiz-del-Solar and Ricardo Baeza-Yates.

From June 2002 to March 2003 I worked at the IBM TJ Watson Research Center (Hawthorne, NY), in the Pervasive Media Management group.

In the summer of 2001 I worked at IBM's Tokyo Research Laboratory in a project on summarizing videos for hand-held devices. During the summers of 1998 and 2000 I worked on different projects at the IBM TJ Watson Research Center (Yorktown Heights), in the Image Library Applications group, which was part of the Visual Technologies department.

In the summer of 1997 I worked at Siemens Corporate Research (Princeton, NJ) in the Multimedia and Video Technology Department and during the summer of 1996 I worked at AT&T Bell Laboratories (now AT&T Research) in Holmdel, NJ in the Network Management Interfaces Group.

In 1997 I  received a M.S. in Computer Science from Columbia University. In 1994 I received a degree in Computing Systems Engineering (English link) at Universidad de los Andes in Bogota - Colombia ( South America). I was  member of the DFAC (Computer Aided Manufacturing and Design) Research Group at Universidad de los Andes , where I Worked for a year as Research Assistant developing a software library for Image Processing and Computer Vision.

At Columbia, I worked during the Fall 1995 and Spring 1996 on the following:

In the Robotics Group, the Virtual Vision Lab project. I developed the Visual Tacking Module (C++/Motif/X-Vision) and incorporated it into the tutorial. The tracking module allows the user to select objects in a video sequence and tracks them as they move during the sequence.

In the Graphics Group, I did some work on an Stk interface for n-Vision (3D utility for viewing multi-variate data). I also worked on a project involving Augmented Reality (camera calibration and Pan Tilt Unit-PTU programming in Modula-3) where a pair of 3D Virtual IO glasses are mounted on a camera. Soon, users will be allowed users to move the camera by issuing commands over the WWW (see graphics homepage). 3D Computer Graphics