Previous studies on sequence-based extraction of human movement trajectories have an issue of inadequate trajectory representation. Specifically, a pair of locations may not be lined up in a sequence especially when one location includes the other geographically. In this study, we propose a graph representation that retains information on the geographic hierarchy as well as the temporal order of visited locations, and have constructed a benchmark dataset for graph-structured trajectory extraction. The experiments with our baselines have demonstrated that it is possible to accurately predict visited locations and the order among them, but it remains a challenge to predict the hierarchical relations.
@article{arxiv.2410.16633,
title = {Graph-Structured Trajectory Extraction from Travelogues},
author = {Aitaro Yamamoto and Hiroyuki Otomo and Hiroki Ouchi and Shohei Higashiyama and Hiroki Teranishi and Hiroyuki Shindo and Taro Watanabe},
journal= {arXiv preprint arXiv:2410.16633},
year = {2024}
}