Experience Support for Metaverse and its Social Network

• Project/Area Number: 26330421
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Entertainment and game informatics 1
• Research Institution: Ritsumeikan University
• Principal Investigator: THAWONMAS Ruck 立命館大学, 情報理工学部, 教授 (50320122)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 情報推薦 / 協調フィルタリング / 行列分解 / メタ―バス / Second Life / 不均衡データ / パターン分類 / サポートベクターマシン / メタバース / 不均衡データ問題 / エリア推薦 / リンク予測 / ボット発見

Outline of Final Research Achievements

This research project focuses on information recommendation to support activities of novice users in mataverse such as Second Life. In particular, three themes were conducted, namely, (1) exploitation of context information in collaborative filtering, (2) improvement of BMF, a matrix factorization (MF) method with bound constraints, and (3) resolution of imbalanced data for user classification. Seven peer-reviewed papers have been published based on these results. It can be said that our main research objectives have been fulfilled.

Research Products

• [Int'l Joint Research] バンコク大学(タイ)
• [Journal Article] Borderline Over-sampling in Feature Space for Learning Algorithms in Imbalanced Data Environments (2016)
  • Author(s): Kittipat Savetratanakaree, Kingkarn Sookhanaphibarn, Sarun Intakosum and Ruck Thawonmas
  • Journal Title: IAENG International Journal of Computer Science Volume: 43 (3) Pages: 363-373
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] An Improvement of Matrix Factorization with Bound Constraints for Recommender Systems (2016)
  • Author(s): Kazuki Mori, Tung Nguyen, Tomohiro Harada, and Ruck Thawonmas
  • Journal Title: Proc. of the 2016 5th IIAI International Congress on Advanced Applied Informatics (IIAI-AAI 2016) Volume: - Pages: 103-106
  • DOI: 10.1109/iiai-aai.2016.244
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] An Extension for Bounded-SVD — A Matrix Factorization Method with Bound Constraints for Recommender Systems (2016)
  • Author(s): Bang Hai Le, Kazuki Mori, Ruck Thawonmas
  • Journal Title: Journal of Information Processing Volume: 24 Issue: 2 Pages: 314-319
  • DOI: 10.2197/ipsjjip.24.314
  • NAID: 130005138312
  • ISSN: 1882-6652
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 仮想空間環境におけるコンテキスト情報を活用した協調フィルタリング手法の提案と評価 (2015)
  • Author(s): 川瀬 寛太, レ・ハイ・バン, ターウォンマット・ラック
  • Journal Title: 情報処理学会論文誌 Volume: 56(10) Pages: 1988-1995
  • NAID: 170000130746
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Bounded-SVD: A Matrix Factorization Method with Bound Constraints for Recommender Systems (2015)
  • Author(s): Bang Hai Le, Kien Quang Nguyen, and Ruck Thawonmas
  • Journal Title: Proc. of the 2nd International Research Conference on Emerging Information Technology and Engineering Solutions (EITES 2015, Pune, India, Feb. 20-21, 2015) Volume: - Pages: 23-26
  • Peer Reviewed
• [Journal Article] Collaborative Filtering for Recommendation of Areas in Virtual Worlds (2014)
  • Author(s): Kanta Kawase, Bang Hai Le, and Ruck Thawonmas
  • Journal Title: Proc. of the 2014 International Workshop on Network and Systems Support for Games (NetGames 2014, Nagoya, Japan, Dec. 4-5, 2014) Volume: - Pages: 1-3
  • Peer Reviewed
• [Journal Article] Players’ Interest Measurement Based on Visiting Time in a Location-Based Game (2014)
  • Author(s): Satoshi Chiba, Bang Hai Le, and Ruck Thawonmas
  • Journal Title: Proc. of the 3rd IEEE Global Conference on Consumer Electronics (GCCE 2014, Tokyo, Japan, Oct. 7-10, 2014) Volume: - Pages: 492-493
  • Peer Reviewed
• [Remarks] THAWONMAS Ruck Research Publications
  • URL: http://www.ice.ci.ritsumei.ac.jp/~ruck/paper.html
• [Remarks] 研究者ページ
  • URL: http://www.ice.ci.ritsumei.ac.jp/~ruck/index_j.html