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Title	Travel Time Estimation Without Road Networks: An Urban Morphological Layout Representation Approach
ID_Doc	58949
Authors	Lan W.; Xu Y.; Zhao B.
Year	2019
Published	IJCAI International Joint Conference on Artificial Intelligence, 2019-August
DOI	http://dx.doi.org/10.24963/ijcai.2019/245
Abstract	Travel time estimation is a crucial task for not only personal travel scheduling but also city planning. Previous methods focus on modeling toward road segments or sub-paths, then summing up for a final prediction, which have been recently replaced by deep neural models with end-to-end training. Usually, these methods are based on explicit feature representations, including spatio-temporal features, traffic states, etc. Here, we argue that the local traffic condition is closely tied up with the land-use and built environment, i.e., metro stations, arterial roads, intersections, commercial area, residential area, and etc, yet the relation is time-varying and too complicated to model explicitly and efficiently. Thus, this paper proposes an end-to-end multi-task deep neural model, named Deep Image to Time (DeepI2T), to learn the travel time mainly from the built environment images, a.k.a. the morphological layout images, and showoff the new state-of-the-art performance on real-world datasets in two cities. Moreover, our model is designed to tackle both path-aware and path-blind scenarios in the testing phase. This work opens up new opportunities of using the publicly available morphological layout images as considerable information in multiple geography-related smart city applications. © 2019 International Joint Conferences on Artificial Intelligence. All rights reserved.
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