A spatial-temporal attention model for human trajectory prediction

TLDR: A novel spatial-temporal attention ( ST-Attention) model is proposed, which studies spatial and temporal affinities jointly and introduces an attention mechanism to extract temporal affinity, learning the importance for historical trajectory information at different time instants.

Abstract: Human trajectory prediction is essential and promising in many related applications. This is challenging due to the uncertainty of human behaviors, which can be influenced not only by himself, but also by the surrounding environment. Recent works based on long-short term memory &#x0028 LSTM &#x0029 models have brought tremendous improvements on the task of trajectory prediction. However, most of them focus on the spatial influence of humans but ignore the temporal influence. In this paper, we propose a novel spatial-temporal attention &#x0028 ST-Attention &#x0029 model, which studies spatial and temporal affinities jointly. Specifically, we introduce an attention mechanism to extract temporal affinity, learning the importance for historical trajectory information at different time instants. To explore spatial affinity, a deep neural network is employed to measure different importance of the neighbors. Experimental results show that our method achieves competitive performance compared with state-of-the-art methods on publicly available datasets.