Zhao He
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Zhao He
In https://github.com/zhaone/LaneGCN_ref/blob/main/data/LaneGCN/hdmap.py#L176 ``` dist = np.expand_dims(ctrs, axis=1) - np.expand_dims(ctrs, axis=0) dist = np.sqrt((dist ** 2).sum(2)) ``` The motivation should be calculating a distance matrix of nodes which shape is $(M,M)$,...