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Soft Attention: Does it Actually Help to Learn Social Interactions in Pedestrian Trajectory Prediction? by Boucaud, Laurent; Aloise, Daniel; Saunier, Nicolas is a scholarly article available to read on EtoBox.

What is Soft Attention: Does it Actually Help to Learn Social Interactions in Pedestrian Trajectory Prediction? about?

We consider the problem of predicting the future path of a pedestrian using its motion history and the motion history of the surrounding pedestrians, called social information. Since the seminal paper on Social-LSTM, deep-learning has become the main tool used to model the impact of social interactions on a pedestrian's motion. The demonstration that these models can learn social interactions relies on an ablative study of these models. The models are compared with and without their social interactions module on two standard metrics, the Average Displacement Error and Final Displacement Error. Yet, these complex models were recently outperformed by a simple constant-velocity approach. This questions if they actually allow to model social interactions as well as the validity of the proof. In this paper, we focus on the deep-learning models with a soft-attention mechanism for social interaction modeling and study whether they use social information at prediction time. We conduct two experiments across four state-of-the-art approaches on the ETH and UCY datasets, which were also used in previous work. First, the models are trained by replacing the social information with random noise

Author

Boucaud, Laurent; Aloise, Daniel; Saunier, Nicolas

Published

2021

Language

EN