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Are socially-aware trajectory prediction models really socially-aware?

Saadatnejad, S ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1016/j.trc.2022.103705
  3. Publisher: Elsevier Ltd , 2022
  4. Abstract:
  5. Our transportation field has recently witnessed an arms race of neural network-based trajectory predictors. While these predictors are at the core of many applications such as autonomous navigation or pedestrian flow simulations, their adversarial robustness has not been carefully studied. In this paper, we introduce a socially-attended attack to assess the social understanding of prediction models in terms of collision avoidance. An attack is a small yet carefully-crafted perturbations to fail predictors. Technically, we define collision as a failure mode of the output, and propose hard- and soft-attention mechanisms to guide our attack. Thanks to our attack, we shed light on the limitations of the current models in terms of their social understanding. We demonstrate the strengths of our method on the recent trajectory prediction models. Finally, we show that our attack can be employed to increase the social understanding of state-of-the-art models. The code is available at https://s-attack.github.io/. © 2022 The Authors
  6. Keywords:
  7. Adversarial attack ; Human trajectory prediction ; Forecasting ; Trajectories ; Behaviors simulation ; Human social behavior simulation ; Network-based ; Neural-networks ; Prediction modelling ; Robustness ; Social behaviour ; Trajectory prediction ; Social behavior ; Arms race ; Artificial neural network ; Collision avoidance ; Prediction ; Trajectory ; Transportation system
  8. Source: Transportation Research Part C: Emerging Technologies ; Volume 141 , 2022 ; 0968090X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0968090X22001437