Changki Lee


2001

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SiteQ: Engineering High Performance QA System Using Lexico-Semantic Pattern Matching and Shallow NLP
Gary Geunbae Lee | Jungyun Seo | Seungwoo Lee | Hanmin Jung | Bong-Hyun Cho | Changki Lee | Byung-Kwan Kwak | Jeongwon Cha | Dongseok Kim | Joohui An | Harksoo Kim | Kyungsun Kim
Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001

2002

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POSNIR: Probabilistic Natural Language Information Retrieval System
Changki Lee | Seungwoo Lee | Gary Geunbae Lee
Proceedings of the Third NTCIR Workshop on Research in Information Retrieval, Automatic Text Summarization and Question Answering, NTCIR-3, Tokyo, Japan, October 8-10, 2002

2003

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Exploring term dependences in probabilistic information retrieval model
Bong-Hyun Cho | Changki Lee | Gary Geunbae Lee
2003 Volume 39 Issue 4

2005

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A LF Based Answer Indexing Method for Encyclopedia Question-Answering System
Hyeon-Jin Kim | Ji-Hyun Wang | Changki Lee | Chung-Hee Lee | Myung-Gil Jang
Information Retrieval Technology, Second Asia Information Retrieval Symposium, AIRS 2005, Jeju Island, Korea, October 13-15, 2005, Proceedings

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Probabilistic information retrieval model for a dependency structured indexing system
Changki Lee | Gary Geunbae Lee
2005 Volume 41 Issue 2

2006

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Fine-Grained Named Entity Recognition Using Conditional Random Fields for Question Answering
Changki Lee | Yi-Gyu Hwang | Hyo-Jung Oh | Soojong Lim | Jeong Heo | Chung-Hee Lee | Hyeon-Jin Kim | Ji-Hyun Wang | Myung-Gil Jang
Information Retrieval Technology, Third Asia Information Retrieval Symposium, AIRS 2006, Singapore, October 16-18, 2006, Proceedings

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An effective procedure for constructing a hierarchical text classification system
Yongwook Yoon | Changki Lee | Gary Geunbae Lee
2006 Volume 57 Issue 3

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Information gain and divergence-based feature selection for machine learning-based text categorization
Changki Lee | Gary Geunbae Lee
2006 Volume 42 Issue 1

2007

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Fine-grained named entity recognition and relation extraction for question answering
Changki Lee | Yi-Gyu Hwang | Myung-Gil Jang
SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007

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Dependency structure language model for topic detection and tracking
Changki Lee | Gary Geunbae Lee | Myung-Gil Jang
2007 Volume 43 Issue 5

2008

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Fixed-threshold SMO for Joint Constraint Learning Algorithm of Structural SVM
Changki Lee | Hyunki Kim | Myung-Gil Jang
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2008, Singapore, July 20-24, 2008

2011

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Named entity recognition using a modified Pegasos algorithm
Changki Lee | Pum-Mo Ryu | Hyunki Kim
Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011

2013

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Automatic Korean word spacing using Pegasos algorithm
Changki Lee | Hyunki Kim
2013 Volume 49 Issue 1