预测场景中代理的未来位置是自动驾驶中的一个重要问题。近年来,在代表现场及其代理商方面取得了重大进展。代理与场景和彼此之间的相互作用通常由图神经网络建模。但是,图形结构主要是静态的,无法表示高度动态场景中的时间变化。在这项工作中,我们提出了一个时间图表示,以更好地捕获流量场景中的动态。我们用两种类型的内存模块补充表示形式。一个专注于感兴趣的代理,另一个专注于整个场景。这使我们能够学习暂时意识的表示,即使对多个未来进行简单回归,也可以取得良好的结果。当与目标条件预测结合使用时,我们会显示出更好的结果,可以在Argoverse基准中达到最先进的性能。
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The promise of Mobile Health (mHealth) is the ability to use wearable sensors to monitor participant physiology at high frequencies during daily life to enable temporally-precise health interventions. However, a major challenge is frequent missing data. Despite a rich imputation literature, existing techniques are ineffective for the pulsative signals which comprise many mHealth applications, and a lack of available datasets has stymied progress. We address this gap with PulseImpute, the first large-scale pulsative signal imputation challenge which includes realistic mHealth missingness models, an extensive set of baselines, and clinically-relevant downstream tasks. Our baseline models include a novel transformer-based architecture designed to exploit the structure of pulsative signals. We hope that PulseImpute will enable the ML community to tackle this significant and challenging task.
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