Abstract
The proposed robot recommendation system is able to make recommendations based on the real-time estimation of the shopper's choice. Our system estimates shoppers' attentions using only head movements The first experiment validated the capability of our intention estimator in a kiosk-shop scenario. In the second experiment, a Humanoid robot intervened in the decision process. As a result, we found that our system significantly changed the shoppers' choices in the two-alternative-forced-choice literature.