In the press: "Je me souviens..." Poster une photo pour lutter contre Alzheimer

Published in Sciences et Avenir (10 Apr 2014)

Seminar: Batch mode reinforcement learning based on the synthesis of artificial trajectories, April 17th 2014 at 11:00

Damien Ernst  is associate professor at University of Liège, Liège, Belgium.

Abstract: In this talk, we consider the batch mode reinforcement learning setting, where the central problem is to learn from a sample of trajectories a policy that satisfies or optimizes a performance criterion. We focus on the continuous state space case for which usual resolution schemes rely on function approximators either to represent the underlying control problem or to represent its value function. As an alternative to the use of function approximators, we rely on the synthesis of "artificial trajectories" from the given sample of trajectories, and show that this idea opens new avenues for designing and analyzing algorithms for batch mode reinforcement learning. 

More information on XRCE seminars .

International Conference on Learning Representations 2014, April 14th - 16th, Banff, Canada

Guillaume Bouchard , Machine Learning for Services research  presenting  paper “Group-sparse  Embeddings in Collective Matrix Factorization ”, co-authored by Arto Klami and Abhishek Tripathi. 

ICLR 2014

Do you remember? I-remember: forgotten photos returned to owners who tell their stories to support campaign to find a cure for Alzheimer’s disease.

Xerox Research Centre Europe linguistic technology supports campaign so users can search for stories online.

Today about 30 million people worldwide suffer from Alzheimer’s disease - and with them their family and friends.

Research into the disease and finding a treatment that stops or reverses the progression of the disease is of great importance and one of the goals of the French Foundation for Medical Research .

To increase awareness of Alzheimer’s and to incite donations the creative advertising agency CLM BBDO  and the French Foundation for Medical Research came up with an original idea.

They tracked down the owners of photo film who had put never picked up their photos from the lab once they had been developed. In a documentary film they handed over the photos in the pace they were taken and asked the owners to tell the story of what they photos reminded them of and what they were doing at the time. These stories were recorded and posted on line at

On Open Xerox users can upload their own photos and enter a short description of it. These are automatically indexed with a linguistic web service  from Xerox Research Centre Europe  which extracts keyword from the description to index them and make it easy for users to search the sire. The twist is that, just Alzheimer’s disease, the less the site is used the more quickly it starts to disappear, just like human memories. To keep it alive it needs people to continuously upload their photos and memories!

By highlighting the pleasure of having memories, the campaign hopes to encourage donations to finance further research into finding a cure for this terrible disease.

CBNews article  

Career opportunities

Discover in this video  what it’s like to work at Xerox Research Centre Europe.

Xerox Research Centre Europe (XRCE) is a young, dynamic research organization, which creates innovative technologies to support growth in Xerox business process outsourcing and document management services businesses.

Our domains of research stretch from the social sciences to computer science. We have renowned expertise in machine learning, natural language processing, computer vision, ethnography and services computing.

XRCE is part of the Xerox Innovation group  made up of 650 researchers and engineers in four world-renowned research and technology centres. Our goal is to make Xerox a great place to work. Through a comprehensive set of employee-focused initiatives, we promote diversity by nurturing a culture of inclusion and opportunity, and through measurable actions.


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The Grenoble site is set in a park in the heart of the French Alps in a stunning location only a few kilometers from the city centre. The city of Grenoble has a large scientific community made up of national research institutes (CNRS, Universities, INRIA) and private industries. Stimulated also by the presence of a large student community, Grenoble has become a resolutely modern city, with a rich heritage and a vibrant cultural scene. It is a lively and cosmopolitan place, offering a host of leisure opportunities. Winter sports resorts just half an hour from campus and three natural parks at the city limits make running, skiing, trekking, climbing and paragliding easily available.
Grenoble is close to both the Swiss and Italian borders.
AEPI, the Grenoble-Isere Economic Development Agency: "Grenoble-Isere, the place to innovate, where the only limit is your imagination."

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