Developing an Algorithm for Extracting Schema from External Graph

• Project/Area Number: 17K00150
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Multimedia database
• Research Institution: University of Tsukuba
• Principal Investigator: Suzuki Nobutaka 筑波大学, 図書館情報メディア系, 教授 (60305779)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
• Keywords: グラフデータ / スキーマ抽出

Outline of Final Research Achievements

In this study, we constructed an algorithm for extracting schema from graph data. The target schema languages are graph schema and Shape Expression. First, we constructed an algorithm for extracting schema efficiently by introducing new utility function and parallelization. Then we considered extending our algorithm to extract Shape Expression schema from graph data.

Academic Significance and Societal Importance of the Research Achievements

グラフデータは，ソーシャルグラフ，生物データ，Linked Open Dataなどのオープンデータなど，様々な場面で用いられているが，データ量が増大しその構造も複雑化している．一方，グラフデータ対してShape Expressionなど新たなスキーマ言語が提案されており，今後はその活用が進むものと期待されている．グラフデータからスキーマを抽出することができれば，得られたスキーマを用いて，大規模なグラフデータの管理をより効率よく行うことが可能となる．

Research Products

• [Journal Article] Shape Expression Schemaのスキーマ進化に対するProperty Path式修正アルゴリズム (2020)
  • Author(s): 赤澤豪樹，鈴木伸崇
  • Journal Title: 第12回データ工学と情報マネジメントに関するフォーラム(DEIM 2020)論文集 Volume: -
  • Open Access
• [Journal Article] An Algorithm for Extracting Shape Expression Schemas from Graphs (2019)
  • Author(s): Y. Tsuboi and N. Suzuki
  • Journal Title: Proceedings of the 19th ACM Symposium on Document Engineering Volume: - Pages: 1-4
  • DOI: 10.1145/3342558.3345417
  • Peer Reviewed
• [Journal Article] Extracting Schemas from Large Graphs with Utility Function and Parallelization (2018)
  • Author(s): Y. Sekine and N. Suzuki
  • Journal Title: Proceedings of the Second International Workshop on Graph Data Management and Analysis (GDMA 2018), LNCS 10829 Volume: - Pages: 125-140
  • DOI: 10.1007/978-3-319-91455-8_13
  • ISBN: 9783319914541, 9783319914558
  • Peer Reviewed
• [Journal Article] Extracting Schemas from Large Graphs with Utility Function and Parallelization (2018)
  • Author(s): Y. Sekine and N. Suzuki
  • Journal Title: Proceedings of the Second International Workshop on Graph Data Management and Analysis (GDMA 2018) Volume: -
  • Peer Reviewed
• [Journal Article] A Schema Extraction Algorithm for External Memory Graphs Based on Novel Utility Function (2018)
  • Author(s): Y. Sekine and N. Suzuki
  • Journal Title: 第10回データ工学と情報マネジメントに関するフォーラム講演論文集 Volume: -
  • Open Access
• [Presentation] Shape Expression Schemaのスキーマ進化に対するProperty Path式修正アルゴリズム (2020)
  • Author(s): 赤澤豪樹
  • Organizer: 第12回データ工学と情報マネジメントに関するフォーラム(DEIM 2020)
• [Presentation] An Algorithm for Extracting Shape Expression Schemas from Graphs (2019)
  • Author(s): Y. Tsuboi
  • Organizer: The 19th ACM Symposium on Document Engineering
  • Int'l Joint Research
• [Presentation] Extracting Schemas from Large Graphs with Utility Function and Parallelization (2018)
  • Author(s): N. Suzuki
  • Organizer: Proceedings of the Second International Workshop on Graph Data Management and Analysis (GDMA 2018)
  • Int'l Joint Research
• [Presentation] ラベル付き有向グラフに対する Shape Expression Schema の抽出 (2018)
  • Author(s): 坪井悠冬里，鈴木伸崇
  • Organizer: 2018年電子情報通信学会総合大会学生ポスターセッション