• 김병우, 고영중
     "어휘 의미 패턴(Lexico-Semantic Pattern)과 온톨로지를 이용한 정보검색기의 설계 및 구현",
     HCI 2007 학술대회, 1권, pp. 957-962, Feb. 2007.
  Byoungwoo Kim and Youngjoong Ko (2007),
     "The Design and Implementation of an Information Retrieval System Using Lexico-Semantic
     Pattern and Ontology,"
     Proceedings of Conference on Human and Computer Interaction (HCI-2007),
     Vol.1, pp.957-962, February 2007.

• 황재원, 전태균, 고영중
     "종자 어휘를 이용한 자질 추출과 지지벡터기계(SVM)을 이용한 문서감정 분류 시스템의 개발",
     HCI 2007 학술대회, 1권, pp. 938-942, Feb. 2007.
  Jeawon Hwang, Taegyun Jeon, and Youngjoong Ko (2007),
     "A Sentiment Classification System Using Feature Extraction from Seed Words and Support
     Vector Machine,"
     Proceedings of Conference on Human and Computer Interaction(HCI-2007),
     Vol.1, pp.938-942, February 2007.

• 안홍국, 고영중, 서정연
     "유사 적합성 피드백 기반의 문서 요약 기법을 이용한 효과적인 스니펫(snippet)생성",
     HCI 2007 학술대회, 1권, pp. 174-181, Feb. 2007.
  Hongguk An, Youngjoong Ko, Jungyun Seo (2007),
     "An Effective Snippet Generation Method Using Text Summarization Techniques Based on
     Pseudo Relevance Feedback,"
     Proceedings of Conference on Human and Computer Interaction (HCI-2007),
     Vol.1, pp.174-181, February 2007. (SCOPUS)

2006

• Sangwoo Kang, Youngjoong Ko, and Jungyun Seo
     "A Plan-based Model for Efficient Response Generation in Dialogue User Interface",
     The 3rd CIR-COE Joint Workshop On Robot Technologies for Human-Robot Coexistence,
     in KIST, Seoul, Korea, Sept. 3-4, 2006.

• Youngjoong Ko and Jungyun Seo
     "Learning with Unlabeled Data for Text Categorization Using a Bootstrapping and a Feature
     Projection Technique ",
     Proceedings of the 42nd Annual Meeting of the Association for Computational Linguistics
     (ACL 2004), in Barcelona, Spain, pp.255-262, July 2004.
  

• 강상우, 고영중, 서정연
     "대화시스템을 위한 계획인식과 담화스택을 이용한 효과적인 응답 생성",
     제 18회 한글 및 한국어 정보처리 학술 대회(HCLT 2006), pp. 177-182, Oct. 2006.
  Sangwoo Kang, Youngjoong Ko, and Jungyun Seo
     " Using Plan Recognition and a Discourse Stack for Efficient Response Generation in a
     Dialogue System," Proceedings of the 18th Annual Conference on Human and Cognitive
     Language (HCLT-2006), pp. 177-182, October 2006.

• 강상우, 고영중, 서정연
     "지능형 인간로봇 개발을 위한 계획기반의 대화 모델 설계",
     인간지능 생활지능 지능로봇 기술개발사업단 제6차 기술교류 워크숍, Aug. 2006.
     (SCIE,ISSN 0302-9743)
  Sangwoo Kang, Youngjoong Ko, and Jungyun Seo
     "The Design of a Plan-based Dialogue Model for Intelligent Human-Robot Development,"
     The 6th Workshop for Robot Development Technologies, August 2006.

2004

• Hyoungdong Han, Youngjoong Ko, and Jungyun Seo
     "Improving Binary Text Classification Using the EM Algorithm",
     Proceedings of Asian Information Retrieval Symposium, Poster Session(AIRS 2004),
     in Beijing, China, pp.325-328, Oct, 2004.

• 한형동, 고영중, 서정연
     "EM알고리즘을 이용한 이진 분류 문서 범주화의 성능 향상",
     한국 정보 과학회 추계 발표회 논문집, pp.790-792, Oct. 2004.
  Hyoungdong Han, Youngjoong Ko, and Jungyun Seo
     "Improving Performance of Binary Text Classification Using the EM Algorithm,"
     Proceedings of Fall Conference on Korean Institute of Information Scientists and Engineers
     (KIISE-2004), pp.790-792, October 2004.

• 심보준, 고영중, 김학수, 서정연
     "자연어 질의응답 시스템을 위한 is-a관계 패턴의 구축과 활용",
     제16회 한글,언어,인지 학술 대회, pp.181-188, Sep. 2004.
  Bojun Shim, Youngjoong Ko, Harksoo Kim, and Jungyun Seo (2004),
     "Extracting and Utilizing is-a Relation Patterns for Question Answering System."
     Proceedings of the 16th Annual Conference on Human and Cognitive Language (HCLT-2004),
     pp.181-188, October 2004.

• 정운철, 고영중, 서정연
     "2단계 문장 추출방법을 이용한 자동 문서 요약",
     한국 정보 과학회 춘계 발표회 논문집(B), pp.910-912, April. 2004.
  Wooncheol Jung, Youngjoong Ko, and Jungyun Seo
     "Text Summarization with Two Step Sentence Extraction," Proceedings of Spring Conference
     on Korean Institute of Information Scientists and Engineers (KIISE-2004),
     pp.910-912, April. 2004.

2002

• Youngjoong Ko and Jungyun Seo
     "Text Categorization Using Feature Projections",
     Proceedings of the 19th International Conference on Computational Linguistics
     (COLING 2002) , in Taipei, Taiwan, pp.467-473, August, 2002.

• Youngjoong Ko, Jinwoo Park, and Jungyun Seo
     "Automatic Text Categorization using the Importance of Sentences ",
     Proceedings of the 19th International Conference on Computational Linguistics
     (COLING 2002), in Taipei, Taiwan, pp.474-480, August, 2002.

• 김건오, 고영중, 서정연
     "어휘 클러스터링을 이용한 자동 문서 요약",
     한국 정보 과학회 춘계 발표회 논문집, pp. 463-465, April. 2002.
  Kono Kim, Youngjoong Ko, Jungyun Seo
     "Automatic Text Summarization with Lexicla Clustering," Proceedings of Spring Conference of
     Korean Institue of Information Scientists and Engineers (KIISE-2002), pp.463-465, April 2002.
  

2001

• Choong-Nyoung Seon, Youngjoong Ko, Jeong-Seok Kim, and Jungyun Seo
     "Named Entity Recognition using Machine Learning Methods and Pattern-Selection Rules",
     Proceedings of 6th Natural Language Processing Pacific Rim Symposium (NLPRS 2001) ,
     in Tokyo, Japan, pp.229-236, November, 2001.
  

• 박진우, 고영중, 서정연
     "문서 요약 기법을 이용한 자동 문서 범주화",
     한글 및 한국어 정보 처리 학술대회 논문집, pp.138-145, October 2001.
  Jinwoo Park, Youngjoong Ko, and Jungyun Seo (2001),
     "Automatic Text Catagorization Using Text Summarization Techniques,"
     Proceedings of 13th Annual Conference on Human and Cognitive Language
     (HCLT-2006), pp.138-145, October 2001.

2000

• Youngjoong Ko and Jungyun Seo
     "Automatic Text Categorization by Unsupervised Learning",
     Proceedings of The 18th International Conference on Computational Linguistics
     (COLING 2000) , in Saarbrucken, Germany, pp.453-459, July, 2000.

• Youngjoong Ko, Sooyong Park, and Jungyun Seo
     "Web-based Requirements Elicitation Supporting System Using Requirements Categorization",
     Proceedings of Twelfth International Conference on Software Engineering and Knowledge
     Engineering , in Chicago, USA, pp.344-351, July, 2000.

1999

• Harksoo Kim, Youngjoong Ko, Sooyong Park, and Jungyun Seo
     "Informal Requirements Analysis Supporting System for Human Engineer",
     Proceedings of Conference on IEEE SMC99, Vol.3, in Tokyo JAPAN, pp.1013-1018, Oct.
     1999.  (SCOPUS)
  

• 고영중, 서정연
     "다중 모드 대화 시스템에서의 표정과 제스쳐를 결합한 화행 분석",
     '99 한국인지과학회 춘계 학술대회 논문집, pp.199-204, May. 1999.
  Youngjoong Ko and Jungyun Seo
     "Speech Act Analysis with Facial Expressions and Gestures in a Multi-Model Dialogue
     System, "Proceedings of Conference of Korea Cognitive Science society,
     pp.199-204, May 1999.
  

• 김학수, 고영중, 박수용, 서정연
     "문서간 유사도 측정을 통한 효율적인 사용자 요구 분석",
     HCI'99 학술대회 논문집, pp.73-79, Feb. 1999.
  Harksoo Kim, Youngjoong Ko, Sooyoung Park, and Jungyun Seo
     ""Efficient Analysis of User Requirements by Measuring the Similarity of Documents,"
     Proceedings of Conference on Human and Computer Interaction (HCI-1999), pp.73-79,
     February 1999.