Research Interests

  • Recommendation Systems
  • Collaborative Filtering
  • Statistical Machine Learning

Publications

Google Scholar | DBLP
  1. Joonseok Lee, Ariel Fuxman, Bo Zhao, Yuanhua Lv. Leveraging Knowledge Bases for Contextual Entity Exploration, To appear in Proceedings of the 21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2015. [pdf]
  2. Joonseok Lee, Seungyeon Kim, Guy Lebanon, Yoram Singer, Samy Bengio. LLORMA: Local Low-Rank Matrix Approximation, To appear in Journal of Machine Learning Research (JMLR), 2015.
  3. Joonseok Lee. Local Approaches for Collaborative Filtering, Ph.D. Dissertation, Georgia Institute of Technology, 2015. [pdf]
  4. Seungyeon Kim, Joonseok Lee, Guy Lebanon, Haesun Park. Local Context Sparse Coding, Proceedings of the 29th AAAI Conference on Artificial Intelligence (AAAI), 2015. [pdf]
  5. Seungyeon Kim, Joonseok Lee, Guy Lebanon, Haesun Park. Estimating Temporal Dynamics of Human Emotions, Proceedings of the 29th AAAI Conference on Artificial Intelligence (AAAI), 2015. [pdf]
  6. Joonseok Lee, Hanggjun Cho, Robert Ian (Bob) McKay. A Rapid Screening and Testing Protocol for Keyboard Layout Speed Comparison, IEEE Transactions on Human-Machine Systems, vol.PP, no.99, pp.1-14, 2014. [pdf]
  7. Joonseok Lee, Samy Bengio, Seungyeon Kim, Guy Lebanon, Yoram Singer. Local Collaborative Ranking, Proceedings of the 23rd International World Wide Web Conference (WWW), 2014. Best Student Paper Award [pdf]
  8. Joonseok Lee, Seungyeon Kim, Guy Lebanon, Yoram Singer. Local Low-Rank Matrix Approximation, Proceedings of the 30th International Conference on Machine Learning (ICML), 2013. [pdf]
  9. Joonseok Lee, Seungyeon Kim, Guy Lebanon, Yoram Singer. Matrix Approximation under Local Low-Rank Assumption, The Learning Workshop in International Conference on Learning Representations (ICLR), 2013. [pdf]
  10. Joonseok Lee, Kisung Lee, Jennifer G. Kim. Personalized Academic Research Paper Recommendation System, ArXiv Report arXiv:1304.5457, 2013. [pdf]
  11. Mingxuan Sun, Fuxin Li, Joonseok Lee, Ke Zhou, Guy Lebanon, Hongyuan Zha. Learning Multiple-Question Decision Trees for Cold-Start Recommendation, Proceedings of the 6th ACM International Conference on Web Search and Data Mining (WSDM), 2013. [pdf]
  12. Joonseok Lee, Mingxuan Sun, Seungyeon Kim, Guy Lebanon. Automatic Feature Induction for Stagewise Collaborative Filtering, Advances in Neural Information Processing Systems (NIPS) 25, 2012. [pdf]
  13. Joonseok Lee, Mingxuan Sun, Guy Lebanon. PREA: Personalized Recommendation Algorithms Toolkit, Journal of Machine Learning Research (JMLR) 13:2699-2703, 2012. [pdf] [code]
  14. Joonseok Lee, Mingxuan Sun, Guy Lebanon. A Comparative Study of Collaborative Filtering Algorithms, ArXiv Report arXiv:1205.3193, 2012. [pdf]
  15. Joonseok Lee, Hanggjun Cho, Robert Ian (Bob) McKay. Rapid Screening of Keyboard Layouts, Proceedings of IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2012. [pdf]
  16. Joonseok Lee, Robert Ian (Bob) McKay. Optimizing a Personalized Cellphone Keypad, Proceedings of the 5th International Conference on Convergence and Hybrid Information Technology (ICHIT), 2011. [pdf]
  17. Joonseok Lee. Merging Algorithm for Unified Communicator, Seoul National University (Bachelor's Thesis), 2009. [pdf]
  18. Kiyeon Lee, Joonseok Lee, Hyunwoong Shin, Sunghwan Kim, Jungwoo Choi. Real-Time Motion Tracking System using Omni-Directional PTZ Camera, Small and Medium Business Administration of South Korea, 2006. [pdf]

Talks and Presentations


Academic Activities


Ongoing Projects

  • Video contents analysis and recommendation

Past Projects

  • Local Collaborative Ranking
  • Local Low-Rank Matrix Approximation
  • Local Context Sparse Coding
  • Graph-based Context-aware Entity Recommendation
  • Ensembles of collaborative filtering algorithms
  • Comparative study of collaborative filtering algorithms
    • Full experimental results (to be added soon)
  • PREA (Personalized Recommendation Algorithms) Toolkit
  • Mood analysis for blog texts

Frequent Collaborators