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プロジェクト情報(概要) / Project information (abstract)

基本情報 / Basic Information

研究題目
Research Title
Development of optimal decision-making system for road-reconstruction considering human mobility by applying reinforcement learning
状態
Status
実施中
Started
研究番号
Research Number
1060
研究代表者
PI
小川 芳樹 / 東京大学空間情報科学研究センター
Ogawa Yoshiki / Center for Spatial Information Science, The University of Tokyo
事務担当者
Secretary
小川 芳樹 / 東京大学空間情報科学研究センター
Ogawa Yoshiki / Center for Spatial Information Science, The University of Tokyo
受入CSIS教員
CSIS reception staff
小川 芳樹 / -
Yoshiki OGAWA / -
研究内容
Abstract
Western Japan experienced record-breaking heavy rain from June 28 to July 8, 2018. Approximately 600 road sections were closed due to flooding in Hiroshima and Okayama Prefecture. The government develops road-recovery plans to return human mobility to a specific level as soon as possible, however, restoring neighborhood roads was delayed for a week after this flooding. This means that their own plan might not be effective to achieve their own objective. There three limitations government has: 1) lack of prior knowledge, 2) absence of evaluation indicators and 3) the difficulty of estimating human mobility. For solving these problems, we select Deep Q-Network which decide optimal strategies by interacting the environment without prior reference. Plus, we utilized origin-destination pairs from mobile phone GPS data, and digital road map to estimate human movement in real situation. The agent in our model is a single road crew. Traffic volume represents human mobility and is utilized to calculate the human mobility recovery rate, which refers to each action’s reward. We want the agent to tend to prioritize damaged road construction with high influence on human mobility recovery. There are two types of information from analysis result: 1) Sequence of operations, and 2) traffic volume in each link at each step. We believe that government officials could apply our results as a reference to set the priority order.
研究期間
Research Period
2020-12-24 - 2022-03-31

研究者 / Researchers

申請中の研究者は表示されません。
Pending researchers are not shown.

小川 芳樹 東京大学空間情報科学研究センター
Ogawa Yoshiki Center for Spatial Information Science, The University of Tokyo
ジュ スヒョン 東京大学生産技術研究所
Joo SooHyun Institute of Industrial Science, the University of Tokyo

利用データセット / Datasets used

申請中のデータセットは表示されません。
Pending datasets are not shown.

国勢調査メッシュ (CSV形式) データセット
Grid Square Statistics of Population Censuses (CSV format)
平成27年国勢調査地域メッシュ統計その1 世界測地系(CSV形式)データセット
Grid Square Statistics of Population Census (Volume 1) in 2015
平成27年国勢調査地域メッシュ統計その2 世界測地系(CSV形式)データセット
Grid Square Statistics of Population Census (Volume2) in 2015
平成27年国勢調査町丁・字等別地図境域データ 世界測地系 (Shape形式) データセット
2015 Population Census: Tabulation for Small Areas (cho / aza etc.), Boundary data (Shapefile format, JGD 2000)
拡張版全国デジタル道路地図データベース 2016年版
Digital Road Map Database extended version 2016
拡張版全国デジタル道路地図データベース 2017年版
Digital Road Map Database extended version 2017
拡張版全国デジタル道路地図データベース 2020年版
Digital Road Map Database extended version 2020

研究成果 / Publications

研究成果は存在しません。
No Publication.

報告書 / Annual reports

報告書は存在しません。
No annual report.