Spectral analysis of geospatial relationship data of tourism flows by coarse-graining and connectivity reconstruction

• Project/Area Number: 22K18502
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 4:Geography, cultural anthropology, folklore, and related fields
• Research Institution: Kanazawa University
• Principal Investigator: NAKAYAMA Shoichiro 金沢大学, 融合科学系, 教授 (90334755)
• Co-Investigator(Kenkyū-buntansha): 川澄 厚志 金沢大学, 融合科学系, 准教授 (00553794) ; 小林 俊一 金沢大学, 地球社会基盤学系, 准教授 (10243065) ; 丸谷 耕太 金沢大学, 融合科学系, 准教授 (50749356)
• Project Period (FY): 2022-06-30 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000); Fiscal Year 2023: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
• Keywords: 観光流動 / スペクトル解析

Outline of Research at the Start

本研究は，観光客移動量の行列を作成し，それを地理空間間のつながりを表す関係データとみなし，そのつながりを再構成し，エリアを設定する．次に，エリア単位でそれを再集計したラプラシアン行列のスペクトル解析を行い，移動関係の強いもしくは弱いなどのエリア間のつながりの分析を行う．さらに，このような移動関係行列をエリア魅力度とエリア間移動コスト情報（移動抵抗）の行列へと分解抽出し，観光地エリア魅力度から各エリアの集客力等の算定などを行う．

Outline of Final Research Achievements

Using the flow data from the survey of National Pure Flow Investigation of Trunk Line Passengers, a matrix of flow volumes was created and spectral analysis was conducted in order to capture the macroscopic aspects of tourist movement. Focusing on the second smallest eigenvalue and the second smallest eigenvector of the spectral analysis results, we discussed the linkage among regions. Through these studies, we confirmed that there is a validity in the method of analyzing regional linkages using the second smallest eigenvalue and the second smallest eigenvector obtained by creating a matrix of flow data, converting it to a Laplacian matrix, and performing a spectral analysis of the matrix. Furthermore, the possibility of decomposing the matrix was discussed.

Academic Significance and Societal Importance of the Research Achievements

移動という人間行動をマクロ的に捉えた観光流動をデータに基づいて解明しようとすることは極めて文理融合・学際的で非常に意義深い．観光流動やつながりを全てデータで解明できるとは限らないが，データで説明できることを明確にすることはそれらの質的分析を行う上でも非常に意義深い．社会的にも，観光は重要産業の一つであり，観光客がどこからどこへ移動するのかを把握することは重要であり，地域間の観光客の移動の関係性を明らかにすることに資するものである．

Research Products

• [Journal Article] INTER-CITY TRAVEL CHANGE PATTERNS IN THE COVID-19 PANDEMIC: ANALYSIS BY A MIXED GRAVITY MODEL (2023)
  • Author(s): FUKUDA Takumi、YAMAGUCHI Hiromichi、NAKAYAMA Shoichiro
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) Volume: 78 Issue: 5 Pages: I_469-I_481
  • DOI: 10.2208/jscejipm.78.5_I_469
  • ISSN: 2185-6540
  • Peer Reviewed
• [Journal Article] Travel Matrix Decomposition for Understanding Spatial Long-Distance Travel Structure (2023)
  • Author(s): Yamaguchi Hiromichi、Shibata Mashu、Nakayama Shoichiro
  • Journal Title: Complexity Volume: 2023 Pages: 1-15
  • DOI: 10.1155/2023/1090277
  • Peer Reviewed / Open Access
• [Journal Article] MONOTONIC PATH ON NETWORK AND ITS APPLICATION TO THE CALCULATION OF TOTAL NUMBER OF PATHS BETWEEN TWO NODES (2022)
  • Author(s): 北倉大地, 小林俊一, 中山晶一朗, 山口裕通
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) Volume: 77 Issue: 5 Pages: I_107-I_115
  • DOI: 10.2208/jscejipm.77.5_I_107
  • ISSN: 2185-6540
  • Peer Reviewed
• [Journal Article] THE EFFECT OF SEASONAL VARIATION OF TRAVEL DEMAND ON OPTIMAL INTERCITY TRAVEL NETWORK (2022)
  • Author(s): 藤田 雄介, 山口 裕通, 中山 晶一朗
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) Volume: 77 Issue: 5 Pages: I_127-I_136
  • DOI: 10.2208/jscejipm.77.5_I_127
  • ISSN: 2185-6540
  • Peer Reviewed
• [Presentation] 移動者の地域資源の共有基盤に関する実態把握-移住前後のアンケート調査結果より- (2023)
  • Author(s): 川澄厚志
  • Organizer: 観光学術学会第12回大会