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 .

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.

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