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 (TREC, 2001)

POSNIR: Probabilistic Natural Language Information Retrieval System. - Changki Lee; Seungwoo Lee; Gary Geunbae Lee (NTCIR, 2002)

Exploring term dependences in probabilistic information retrieval model. - Bong-Hyun Cho; Changki Lee; Gary Geunbae Lee (Inf. Process. Manag., 2003)

Systematic Construction of Hierarchical Classifier in SVM-Based Text Categorization. - Yongwook Yoon; Changki Lee; Gary Geunbae Lee (IJCNLP, 2004)

An information extraction approach for spoken language understanding. - Jihyun Eun; Changki Lee; Gary Geunbae Lee (INTERSPEECH, 2004)

MMR-based Feature Selection for Text Categorization. - Changki Lee; Gary Geunbae Lee (HLT-NAACL (Short Papers), 2004)

Multiple Heuristics and Their Combination for Automatic WordNet Mapping. - Changki Lee; Gary Geunbae Lee; Jungyun Seo (Comput. Humanit., 2004)

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 (AIRS, 2005)

Restoring an Elided Entry Word in a Sentence for Encyclopedia QA System. - Soojong Lim; Changki Lee; Myoung-Gil Jang (IJCNLP (companion), 2005)

Probabilistic information retrieval model for a dependency structured indexing system. - Changki Lee; Gary Geunbae Lee (Inf. Process. Manag., 2005)

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 (AIRS, 2006)

Heterogeneous Answer Acquisition Methods in Encyclopedia QA. - Hyo-Jung Oh; Chung-Hee Lee; Changki Lee; Ji-Hyun Wang; Yi-Gyu Hwang; Hyeon-Jin Kim; Myung-Gil Jang (IDEAL, 2006)

An integration approach of QA engines depending on answer-class. - Hyo-Jung Oh; Yi-Gyu Hwang; Chung-Hee Lee; Changki Lee; Ji-Hyun Wang; Hyeon-Jin Kim; Myung-Gil Jang (IRI, 2006)

Information gain and divergence-based feature selection for machine learning-based text categorization. - Changki Lee; Gary Geunbae Lee (Inf. Process. Manag., 2006)

An effective procedure for constructing a hierarchical text classification system. - Yongwook Yoon; Changki Lee; Gary Geunbae Lee (J. Assoc. Inf. Sci. Technol., 2006)

Fine-grained named entity recognition and relation extraction for question answering. - Changki Lee; Yi-Gyu Hwang; Myung-Gil Jang (SIGIR, 2007)

Dependency structure language model for topic detection and tracking. - Changki Lee; Gary Geunbae Lee; Myung-Gil Jang (Inf. Process. Manag., 2007)

Fixed-threshold SMO for Joint Constraint Learning Algorithm of Structural SVM. - Changki Lee; Hyunki Kim; Myung-Gil Jang (SIGIR, 2008)

An Efficient Interpolation FIR Filter Using LUT. - Dae-Ik Kim; Changki Lee (J. Inform. and Commun. Convergence Engineering, 2009)

Named entity recognition using a modified Pegasos algorithm. - Changki Lee; Pum-Mo Ryu; Hyunki Kim (CIKM, 2011)

Descriptive Question Answering with Answer Type Independent Features. - Yeo-Chan Yoon; Changki Lee; Hyunki Kim; Myung-Gil Jang; Pum-Mo Ryu; So-Young Park (IEICE Trans. Inf. Syst., 2012)

Extracting Events from Web Documents for Social Media Monitoring Using Structured SVM. - Yoonjae Choi; Pum-Mo Ryu; Hyunki Kim; Changki Lee (IEICE Trans. Inf. Syst., 2013)

Pegasos Algorithm for One-Class Support Vector Machine. - Changki Lee (IEICE Trans. Inf. Syst., 2013)

Automatic Korean word spacing using Pegasos algorithm. - Changki Lee; Hyunki Kim (Inf. Process. Manag., 2013)

Dependency-based semantic role labeling using sequence labeling with a structural SVM. - Soojong Lim; Changki Lee; Dong-Yul Ra (Pattern Recognit. Lett., 2013)

Balanced Korean Word Spacing with Structural SVM. - Changki Lee; Edward Choi; Hyunki Kim (EMNLP, 2014)

Bézier Triangles with G2 Continuity across Boundaries. - Changki Lee; Hae-Do Hwang; Seung-Hyun Yoon (Symmetry, 2016)

LSTM-CRF Models for Named Entity Recognition. - Changki Lee (IEICE Trans. Inf. Syst., 2017)

Anaphora resolution with pointer networks. - Changki Lee; Sangkeun Jung; Cheon-Eum Park (Pattern Recognit. Lett., 2017)

SEx BiST: A Multi-Source Trainable Parser with Deep Contextualized Lexical Representations. - Kyungtae Lim; Cheon-Eum Park; Changki Lee; Thierry Poibeau (CoNLL Shared Task (2), 2018)

KNU CI System at SemEval-2018 Task4: Character Identification by Solving Sequence-Labeling Problem. - Cheon-Eum Park; Heejun Song; Changki Lee (SemEval@NAACL-HLT, 2018)

End-to-End Korean Part-of-Speech Tagging Using Copying Mechanism. - Sangkeun Jung; Changki Lee; Hyunsun Hwang (ACM Trans. Asian Low Resour. Lang. Inf. Process., 2018)

KNU-HYUNDAI's NMT system for Scientific Paper and Patent Tasks onWAT 2019. - Cheon-Eum Park; Young-Jun Jung; Kihoon Kim; Geonyeong Kim; Jae-Won Jeon; Seongmin Lee 005; Junseok Kim; Changki Lee (WAT@EMNLP-IJCNLP, 2019)

Modified VS3-NET for Reading Comprehension and Question Answering with No-Answers. - Cheon-Wum Park; Changki Lee (BigComp, 2019)

ThisIsCompetition at SemEval-2019 Task 9: BERT is unstable for out-of-domain samples. - Cheon-Eum Park; Juae Kim; Hyeon-gu Lee; Reinald Kim Amplayo; Harksoo Kim; Jungyun Seo; Changki Lee (SemEval@NAACL-HLT, 2019)

Multitask Pointer Network for Korean Dependency Parsing. - Sangkeun Jung; Cheon-Eum Park; Changki Lee (ACM Trans. Asian Low Resour. Lang. Inf. Process., 2019)

Coreference Resolution with Hierarchical Pointer Networks Based on Pointing Methods. - Cheoneum Park; Changki Lee; Hyunki Kim (BigComp, 2020)

Fast End-to-end Coreference Resolution for Korean. - Cheoneum Park; Jamin Shin; Sungjoon Park; Joonho Lim; Changki Lee (EMNLP (Findings), 2020)

Attention-Based Automated Feature Extraction for Malware Analysis. - Sunoh Choi; Jangseong Bae; Changki Lee; Youngsoo Kim; Jonghyun Kim (Sensors, 2020)

S3-NET: SRU-Based Sentence and Self-Matching Networks for Machine Reading Comprehension. - Cheoneum Park; Heejun Song; Changki Lee (ACM Trans. Asian Low Resour. Lang. Inf. Process., 2020)

Easy Data Augmentation for Improved Malware Detection: A Comparative Study. - Jangseong Bae; Changki Lee (BigComp, 2021)

Prefix Tuning Using Residual Reparameterization. - Young-Jun Jung; Hyunsun Hwang; Changki Lee (IEEE Access, 2025)