# 2017

  • Donghyun Yoo, Youngjoong Ko and Jungyun Seo.
       "Speech-Act Classification Using a Convolutional Neural Network Based on POS tag and    Dependency-Relation Bigram Embedding."
        IEICE Transactions on Information and System, Vol. E100-D, No. 12, pp. ?-?, December 2017. (to be published)
       (
    SCIE, ISSN 0916-8532)
  • 이호경, 안재현, 윤정민, 배경만, 고영중
       "위키피디아 기반의 효과적인 개체 링킹을 위한 NIL 개체 인식과 개체 연결 중의성 해소 방법"
       정보과학회논문지:(KIISE), 제 44권, 제 8호, pp. 813-821, 2017년 3월. (ISSN 2383-630X)
  • Hokyung Lee, Jaehyun An, Jungmin Yoon, Kyoungman Bae and Youngjoong Ko.
       "A Method of Solving Entity Linking Ambiguity and NIL Entity Recognition for efficient Entity Linking based on Wikipedia."
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,
       Vol. 44, No. 8, pp. 813-821, March 2017. (Accepted)
       (ISSN 2383-630X)
  • Youngjoong Ko
       "How to Use Negative Class Information for Naive Bayes Classification."
        Information Processing and Management, Pergamon-Elsevier Science, Vol. 53, No. 6, pp. 1255-1268,    November 2017.
       (
    SSCI, SCIE,ISSN 0306-4573)
  • Kyoungman Bae and Youngjoong Ko.
       "Improving Question Retrieval in cQA Services Using a Dependency Parser."
        IEICE Transactions on Information and System, Vol. E100-D, No. 2, pp. 807-810, April 2017.
       (
    SCIE,ISSN 0916-8532)
  • Juryong Cheon and Youngjoong Ko.
       " Automatically Extracting Parallel Sentences from Wikipedia Using Sequential Matching of Language    Resources"
       IEICE Transactions on Information and System, Vol. E100-D, No. 2, pp. 405-408, February 2017.
       (
    SCIE, ISSN 0916-8532)
  • 유홍연, 고영중
       "Bidirectional LSTM CRF 기반의 개체명 인식을 위한 단어 표상의 확장"
       정보과학회논문지:(KIISE), 제 44권, 제 3호, pp. 306-313, 2017년 3월. (ISSN 2383-6296)
  • Hongyeon Yu and Youngjoong Ko.
       "The Expansion of Word Representation for Named Entity Recognition Based on Bidirectional LSTM CRFs"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,
       Vol. 44, No. 3, pp. 306-313, March 2017.
       (ISSN 2383-6296)

# 2016

  • Hyoungil Jeong, Youngjoong Ko and Jungyun Seo.
       "How to Improve Text Summarization and Classification by Mutual Cooperation on an Integrated
       Framework."
       Expert Systems with Applications, Vol. 60, pp. 222-233, October 2016.
       (
    SCIE,ISSN 0957-4174)
  • Kyoungman Bae and Youngjoong Ko.
       "How to Combine Translation Probabilities and Question Expansion for Question Classification in
       cQA Services."
       IEICE Transactions on Information and System, Vol. E99-D, No. 4, pp. 1019-1022, April 2016.
       (
    SCIE,ISSN 0916-8532)
  • 이호경, 양선, 고영중
       "비격식 문서 분류 성능 개선을 위한 LDA 단어 분포 기반의 자질 확장"
       정보과학회논문지:(KIISE), 2016년 9월. (ISSN 2383-630X)
                                   
    Hokyung Lee, Seon Yang and Youngjoong Ko.
       " Feature Expansion based on LDA Word Distribution for Performance Improvement of Informal Document
        Classification."
       Journal of Korean Institute of Information Scientists and Engineers (KIISE), Vol. 43, No. 9, pp. 1008-1014,
        September 2016.
       (
    ISSN 2383-630X)
  • 송남훈, 배경만, 고영중
       "분류 우선순위 적용과 후보정 규칙을 이용한 효과적인 한국어 화행 분류"
       정보과학회논문지:(KIISE), 2016년 1월. (ISSN 1229-6848)
                                   
    Namhoon Song, Kyoungman Bae and Youngjoong Ko.
       "Effective Korean Speech-act Classification Using a Classification Priority Application and a Post-correction    Rule."
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,
       January 2016.
       (ISSN 1229-6848)

# 2015

  • Youngjoong Ko.
       "A New Term Weighting Scheme for Text Classification Using the Odds of Positive and Negative Class    Probabilities."
       Journal of the Association for Information Science and Technology, Wiley-Blackwell, Vol. 66, No. 12, pp.    2553-2565, December 2015.
       (SSCI,
    SCIE,ISSN 2330-1635)
  • Hyoungil Jeong, Youngjoong Ko and Jungyun Seo
       "Efficient Keyword Extraction and Text Summarization for Reading Articles on a Smart Phone."
       Computing and Informatics, Vol. 34, No. 4, pp. 1001-1016, 2015.
       (
    SCIE,ISSN 1335-9150)
  • Youngjoong Ko
       "New Feature Weighting Approaches for Speech-act Classification."
       Pattern Recognition Letters, Elsevier Science,, Vol. 51, pp. 107-111, January 2015
       (
    SCIE,ISSN 0167-8655)
  • Sungho Kim, Youngjoong Ko and Douglas W. Oard
       "Combining Lexical and Statistical Translation Evidence for Cross-Language Information Retrieval."
       Journal of the Association for Information Science and Technology, Wiley-Blackwell,
       Vol. 66, No. 1, pp. 23-39, January 2015.
       (SSCI,
    SCIE,ISSN 2330-1635)
  • 천주룡, 고영중
       "언어 자원과 토픽 모델의 순차 매칭을 이용한 유사 문장 계산 기반의 위키피디아 한국어-영어 병렬 말뭉치 구축"
       정보과학회논문지:(KIISE), 제 42권, 제 7호, pp. 901-909, 2015년 7월. (ISSN 2383-6296)
  • Juryong Cheon and Youngjoong Ko
       "Building a Korean-English Parallel Corpus by the Measurement of Sentence Similarities Using the    Sequential Matching of Language Resources and Topic Modeling."
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,
       Vol. 42, No. 7, pp. 901-909, July 2015.
       (ISSN 2383-6296)

# 2014

  • Seon Yang and Youngjoong Ko.
       "Mathematical Formula Search using Natural Language Queries."
       Advances in Electrical and Computer Engineering, Cambridge Journals, Vol. 20, No. 4, pp. 557-581, October 2014.
       (SCIE,ISSN 1582-7445)
  • Seon Yang and Youngjoong Ko
       "Classifying Korean Comparative Sentences for Comparison Analysis."
       Natural Language Engineering, Cambridge Journals, Vol. 20, No. 04, pp. 557-581 , October 2014
       (
    SCIE,ISSN 1469-8110)
  • Youngjoong Ko
       "Sentiment Document Classification Using Global and Domain Features."
       An International Interdisciplinary Journal, Vol. 17, No. 2, pp. 699-708, February 2014.
       (
    SCIE,ISSN 1343-4500)
  • 김성현, 양선, 고영중
       "위키피디아로부터 한국어-영어 병렬 문장 추출"
       정보과학회논문지:(KIISE):소프트웨어 및 응용, 제41권, 제 8호, pp. 580-585, 2014년 8월
  • Sunghyun Kim, Seon Yang and Youngjoong Ko.
       "Extracting Korean-English Parallel Sentences from Wikipedia,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE):
        Software and Applications, Vol. 41, No. 8, pp. 580-585, August 2014. (in Korean)
  • 이창수, 고영중
       "대화형 개인 비서 시스템의 언어 인식 모듈을 위한 개체명과 문장목적 동시 인식 방법
       정보과학회논문지:(KIISE):소프트웨어 및 응용, 2014년 (ISSN 1229-6848)
  • Chansu Lee and Youngjoong Ko
       "A Simultaneous Recognition Method of Named Entities and Objects for the Language Understanding    Module of a Dialogue-based Private Secretary System."
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 41, No. 4, pp. 295-301, April 2014.
       (ISSN 1229-6848)
  • 배경만, 김성현, 고영중, 김종훈
       "자연어 기반 인터페이스에서 개체명 패턴을 이용한 효과적인 개체명과 주제어 인식 방법
       정보기술학회논문지:(KIIT) 제 12권 제 1호, pp. 121-130, 2014년 1월(ISSN 1229-6848)
  • Kyoungman Bae, Sunghyun Kim, Youngjoong Ko and Jonghoon Kim
       "An Efficient Named Entity and Topic Word Recognition Method Based on Named Entity Pattern in a    Natural Language Interface."
       Journal of Korean Institute of Information Technology (KIIT), Vol. 12, No. 1, pp. 121-130, January 2014.

       (ISSN 1598-8619)

# 2013

  • Sangwoo Kang, Youngjoong Ko and Jungyun Seo
       "Hierarchical Speech-act Classification for Discourse Analysis."
       Pattern Recognition Letters, Elsevier Science, Vol. 34, No. 10, pp. 1119-1124, July 2013.
       (
    SCIE,ISSN 0167-8655)
  • Sangwoo Kang, Youngjoong Ko and Jungyun Seo
       "Dialogue Management System Using a Corpus-based Framework and the Dynamic Dialogue
       Transition Model."
       AI Communications, Vol. 26, No. 2, pp. 145-159, April 2013.
       (
    SCIE,ISSN 0921-7126)

# 2012

  • Youngjoong Ko and Sangjun Bae
       "Automatic Named-Entity Set Expansion from the Web Using a Mutual Importance Measure,"
       Information: An International Interdisciplinary Journal,
       Vol. 15, No, 11(B), pp. 5029-5040, November 2012.
       (
    SCIE,ISSN 1343-4500)
  • Kyungsun Kim, Youngjoong Ko and Jungyun Seo
       "An Effective Application of Contextual Information using Adjacency Pairs and a Discourse
       Stack for Speech-Act Classification,"
       International Journal of Innovative Computing Information and Control (IJICIC),
       Vol. 8, No. 11, pp. 7713-7728, November 2012.
       (
    SCIE,ISSN 1349-4198)
  • Shinil Kim, Seon Yang and Youngjoong Ko
       "Classifying Mathematical Expressions Written in MathML,"
       IEICE Transactions on Information and Systems,
       Vol. E95-D,No. 10, pp. 2560-2563, October 2012.
       (
    SCIE,0916-8532)
  • Shinil Kim, Seon Yang and Youngjoong Ko
       "A Novel Discriminative Probablilistic Model for Automatic Word Spacing on Mobile Devices,"
       International Journal of Innovative Computing Information and Control (IJICIC), Vol. 8, No. 7(B),
       pp. 5055-5065, July 2012.
       (
    SCIE,ISSN 1349-4198)
  • Sangwoo Kang, Youngjoong Ko and Jungyun Seo
       "Generating Effective Responses for a Plan-based Dialogue System in Human-robot
       Interaction,"
       Information: An International Interdisciplinary Journal, Vol. 15, No, 2, pp. 949-960, February 2012.
       (
    SCIE,ISSN 1343-4500)
  • 배경만, 고영중, 김종훈
       "커뮤니티 기반의 질의 응답서비스(cQA)에서 질문-응답 쌍의 구조적 특징을 이용한 언어 모델
       기반의 주제 분류 기법,"
       정보과학회논문지:(KIISE):소프트웨어 및 응용, 제39권, 제 8호, pp. 664-671, 2012년 8월(ISSN 1229-6848)
  • Kyoungman Bae, Youngjoong Ko, and Jonghoon Kim
       "A Topic Classification Method Based on a Language Model Using the Structural Features of
       the Question-Answer Pair on cQA,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 39, No. 8, pp. 664-671, August 2012. (ISSN 1229-6848)

# 2011

  • Youngjoong Ko and Jungyun Seo
       "Issues and Empirical Results for Improving Text Classification,"
       Journal of Computing Science and Engineering (JCSE), Vol. 5, No. 2, pp. 150-160, June 2011.
       (ISSN 1976-4677)
  • Seon Yang, Youngjoong Ko
       "Finding Relevant Features for Korean Comparative Sentence Extraction,"
       Pattern Recognition Letters, Elsevier Science, Vol. 32, No. 2, pp. 293-296, January 2011.
       (
    SCIE,ISSN 0167-8655)
  • 양선, 고영중
       "한국어 비교 마이닝을 위한 비교 요소 자동 추출,"
       정보과학회논문지:소프트웨어 및 응용, 제38권, 제 12호, pp. 689-696, 2011년 12월(ISSN 1229-6848)
  • Seon Yang and Youngjoong Ko
       "Extracting Comparative Elements for Korean Comparison Mining,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 38, No. 12, pp. 689-696, December 2011. (ISSN 1229-6848)

  • 김성호, 배상준, 고영중
       "한국어 위키피디아 기반 질의어 중의성 해소 및 확장 자질 추출 기법,"
       정보과학회논문지:(KIISE):컴퓨팅의 실제 및 레터, 제17권, 제3호, pp. 185-189, 2011년 3월.(ISSN 1229-7712)
  • Sungho Kim, Sangjun Bae, and Youngjoong Ko
       "Wrod Sense Disambiguation and Feature Extraction for Query Expansion Method based on Korean
       Wikipedia,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Computing Practices and    Letters, Vol. 17, No. 3, pp. 185-189, March 2011. (ISSN 1229-7712)

# 2010

  • 박용현, 황재원, 고영중
       "한국어 명사 출현 특성과 후절어를 이용한 명사 추출기"
       정보과학회논문지:(KIISE):소프트웨어 및 응용, 제37권, 제 12호, pp. 919-927, 2010년 12월(ISSN 1229-6848)
  • Yonghyun Park, Jaewon Hwang, and Youngjoong Ko
       "Korean Noun Extractor using Occurrence Patterns of Nouns and Post-noun Morpheme Sequences,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 37, No. 12, pp. 919-927, December 2010. (ISSN 1229-6848) )

  • 김신일, 양선, 고영중
       "메모리 제약적 기기를 위한 음절 패턴 기반 띄어쓰기 시스템"
       정보과학회논문지:소프트웨어 및 응용, 제37권, 제 8호, pp. 653-658, 2010년 8월(ISSN 1229-6848)
  • Shinil Kim, Seon Yang, and Youngjoong Ko
       "A Word Spacing System based on Syllable Patterns for Memory-constrained Devices"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 37, No. 8, pp. 653-658, August 2010. (ISSN 1229-6848)

  • 황재원, 고영중
       "감정 단어의 의미적 특성을 반영한 한국어 문서 감정분류 시스템"
       정보과학회논문지(KIISE):소프트웨어 및 응용, 제37권, 제 4호, pp. 317-322, 2010년 4월(ISSN 1229-6848)
    Jaewon Hwang and Youngjoong Ko
       "A Korean Document Sentiment Classification System based on Semantic Properties of
        Sentiment Words"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 37, No. 4, pp. 317-322, April 2010. (ISSN 1229-6848)
  • 배상준, 고영중
       "한국어 위키피디아를 이용한 분류체계 생성과 개체명 사전 자동 구축"
       정보과학회논문지(KIISE):컴퓨팅의 실제 및 레터, 제16권, 제 4호, pp. 492-496, 2010년 4월(ISSN 1229-7712)
    Sangjun Bae and Youngjoong Ko
       "Automatic Construction of Class Hierarchies and Named Entity Dictionaries using Korean Wikipedia
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Computing Practices
       and Letters, Vol. 16, No. 4, pp. 492-496, April 2010. (ISSN 1229-7712)
  • 배경만, 황재원, 고영중, 김종훈
       "“논문 검색 결과의 효과적인 브라우징을 위한 단어 군집화 기반의 결과 내 군집화 기법,”"
       정보과학회논문지: 소프트웨어 및 응용, 제37권, 제 3호, pp. 139-146, 2010년 3월.
    Kyoungman Bae, Jaewon Hwang, Youngjoong Ko, and Jonghoon Kim
       "A Search-Result Clustering Method based on Word Clustering for Effective Browsing of the Paper     Retrieval Results"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and Applications,    Vol. 37, No. 3, pp. 139-146, March 2010. (ISSN 1229-6848)
  • 양선, 고영중
       "한국어 비교 문장 유형 분류를 위한 변환 기반 학습 기법"
       정보과학회논문지: 소프트웨어 및 응용 제37권 제2호 pp. 155-160, 2010년 2월.
    Seon Yang, and Youngjoong Ko
       "Transformation-based Learning for Korean Comparative Sentence Classification"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE):
       Software and Applications, Vol.37, No. 2, pp. 155-160, February 2010.
       (ISSN 1229-6848)

# 2009

  • Youngjoong Ko and Jungyun Seo
       "Text Classification from Unlabeled Documents with Bootstrapping and Feature Projection
       Techniques"
       Information Processing & Management, Pergamon-Elsevier Science,Vol. 45, No.1, pp. 70-83,
       January 2009. (
    SSCI,SCIE,ISSN 0306-4573)

  • 황재원, 고영중
       "문장 감정 강도를 반영한 개선된 자질 가중치 기법 기반의 문서 감정 분류 시스템"
       정보과학회논문지 : 소프트웨어 및 응용,제36권, 제6호, pp. 491-497, June 2009.
    Jaewon Hwang and Youngjoong Ko
       "A Document Sentiment Classification System Based on the Feature Weighting Method
       Improved by Measuring Sentence Sentiment Intensity",
       Journal of Korean Institute of Information Scientists and Engineers (KIISE): Software and
       Applications, Vol.36, No. 6, pp. 491-497, June 2009. (ISSN 1229-6848)

# 2008

  • Youngjoong Ko, Hongkuk An, and Jungyun Seo
       "Pseudo-Relevance Feedback and Statistical Query Expansion for Web Snippet Generation"
       Information Processing Letters, Elsevier Science, Vol.109, No.1, pp.18-22, December, 2008.
       (
    SCIE,ISSN 0020-0190)
  • Youngjoong Ko and Jungyun Seo
       "An Effective Sentence-Extraction Technique Using Contextual Information and Statistical
       Approaches for Text Summarization,"
       Pattern Recognition Letters, Elsevier Science, Vol. 29, No. 9, pp. 1366-1371. July 2008.
       (
    SCIE,ISSN 0167-8655)
  • 황재원, 고영중
       감정 분류를 위한 한국어 감정 자질 추출 기법과 감정 자질의 유용성 평가
       인지과학 제 19권, 제 4호, pp. 499-517, December 2008.
    Jaewon Hwang and Youngjoong Ko
       A Korean Emotion Features Extraction Method and Their Availability Evaluation for
       Sentiment Classification Korean Journal of Cognitive Science, Vol. 19, No. 4, pp. 499-517,
       December 2008. (ISSN 1226-4067)


  • 배상준, 고영중
       "영역별 개체명 사전 자동 구축을 위한 상호중요도 계산 기법 기반의 집합 확장 시스템"
       인지과학 제19권, 제4호, pp.443-458, December 2008.
    Sangjoon Bae and Youngjoong Ko
       "Automatic Named Entities Extraction Using the Graph-based Measurement Technique of the
       Mutual Importance,"
       Korean Journal of Cognitive Science, Vol. 19, No. 4, pp. 443-458, December 2008.
       (ISSN 1226-4067)

  • 강상우, 고영중, 서정연
    "대화 시스템을 위한 계획 인식과 담화 스택을 이용한 효과적인 응답생성"
       한국 인지 과학회, 제 19권, 제 2호, pp.107-124, June 2008 (ISSN 1226-4067)
    Sangwoo Kang, Youngjoong Ko, and Jungyun Seo
       "Using Plan Recognition and a Discourse Stack for Effective Response  Generation in a
       Dialogue System,"
       Korean Journal of Cognitive Science, Vol. 19, No. 2, pp. 107-124, June 2008.
       (ISSN 1226-4067)
  • 고영중, 서정연
       "준지도 학습 기반의 자동문서 범주화"한국 정보 과학회 논문지 : 소프트웨어 및 응용
       제 35권, 제 5호, pp. 306-315, May 2008 (ISSN 1229-6848)

    Youngjoong Ko and Jungyun Seo
       "Automatic Text Categorization Based on Semi-Supervised Learning,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE), Software and
       Applications, Vol. 35, No 5, pp. 325-334, May, 2008. (ISSN 1229-6848)
  • 황재원, 고영중
       "감정 자질을 이용한 한국어 문장 및 문서 감정 분류 시스템" 한국정보과학회논문지 : 컴퓨팅의 실제
       제 14권, 제 3호 pp. 336-340, May, 2008.(ISSN 1229-6848)

    Jaewon Hwang and Youngjoong Ko
       "A Korean Sentence and Document Sentiment Classification System Using Sentiment
       Features,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE),
       Computing Practices and Letters, Vol. 14, No. 3, pp. 336-340, May, 2008. (ISSN 1229-6848)
  • 김원일, 고영중, 서정연
       "강화 학습법을 이용한 효과적인 적응형 대화 전략" 한국정보과학회,
       제 35권, 제 1호, pp. 33-40, January 2008. (ISSN 1229-6848)
    Wonil Kim, Youngjoong Ko, and Jungyun Seo
       "An Effective Adaptive Dialogue Strategy Using Reinforcement Learning,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE),
       Vol. 35, No. 1, pp. 33-40, January 2008. (ISSN 1229-6848)

# 2007

  • Youngjoong Ko, Sooyong Park, Jungyun Seo, and Soonhwang Choi
       "Using Classification Techniques for Informal Requirements in the Requirements Analysis-
       supporting System, Information and Software Technology",
       Elsevier Science, Vol. 49, No. 11-12, pp. 1128-1140, Nov. 2007. (
    SCIE,ISSN 0950-5849)
  • Hyoungdong Han, Youngjoong Ko, and Jungyun Seo
       "Using the Revised EM Algorithm to Remove Noisy Data for Improving the One-against-the-
       rest Method in Binary Text Classification"
       Information Processing & Management, Pergamon-Elsevier Science, Vol. 43, No. 5,
       pp. 1281-1293, Sept. 2007. (
    SSCI,
    SCIE,ISSN 0306-4573)

# 2006

  • Bojun Shim, Youngjoong Ko, and Jungyun Seo
       "Using IS-A Relation Patterns for Factoid Questions in Question Answering Systems"
       IEICE Transactions on Information and System, Vol. E89-D, No. 12, pp. 2985-2989,
       December 2006.(
    SCIE,ISSN 0916-8532)

# 2005

  • Bojun Shim, Youngjoong Ko, and Jungyun Seo
       "Extracting and Utilizing of IS-A Relation Patterns for Question Answering Systems",
       Proceedings of Asia Information Retrieval Symposium (AIRS-05) , in Jeju, Korea, Oct. 11-13,
       2005.
       Lecture Notes in Computer Science (LNCS), in Springer Verlag. Vol. 3689,
       pp. 697-702, Oct. 2005.(
    SCIE,ISSN 0302-9743)
  • Kyungsun Kim, Youngjoong Ko, and Jungyun Seo
       "Improving Korean Speech Acts Analysis by Using Shrinkage and Discourse Stack",
       Proceedings of The Second International Joint Conference on Natural Language Processing
       (IJCNLP-05) , in Jeju, Korea, Oct. 13-15, 2005.
       Lecture Notes in Artificial Intelligence (LNAI), in Springer Verlag., Vol. 3651,
       pp. 731-741, Oct. 2005.(
    SCIE,ISSN 0302-9743)
  • Wooncheol Jung, Youngjoong Ko, and Jungyun Seo
       "Automatic Text Summarization Using Two-step Sentence Extraction",
       Proceedings of Asian Information Retrieval Symposium (AIRS 2004), in Beijing, China,
       pp.43-48, Oct, 2004. Lecture Notes in Computer Science (LNCS), in Springer Verlag.
       Vol. 3411, pp.71-81, Mar. 2005. (
    SCIE,ISSN 0302-9743)

  • 한형동, 고영중, 서정연
       "오류 학습 문서 제거를 통한 문서 범주화 기법의 성능 향상"
       한국정보과학회논문지, 제32권, 9호, pp.912-919, September, 2005. (ISSN 1229-6848)
    Hyoungdong Han, Youngjoong Ko, and Jungyun Seo
       "A Text Categorization Method Improved by Removing Noisy Training Documents,"
       Journal of Korean Institute of Information Scientists and Engineers (KIISE),
       Vol.32, No.9, pp.912-919, September 2005. (in Korean)

# 2004

  • Youngjoong Ko and Jungyun Seo
       "Using the Feature Projection Technique Based on a Normalized Voting Method for Text
       Classification" Information Processing & Management, Pergamon-Elsevier Science, Vol. 40,
       No. 2, pp.191-208, Mar. 2004. (
    SCIE, ISSN 0306-4573)
  • Youngjoong Ko, Jinwoo Park, and Jungyun Seo
       "Improving Text Categorization Using the Importance of Sentences"
       Information Processing & Management, Pergamon-Elsevier Science, Vol. 40, No. 1,
       pp. 65-79, Jan. 2004. (
    SCIE,ISSN 0306-4573)

  • 고영중, 서정연
       "오류 데이터에 강한 자질 투영법 기반의 문서 범주화 기법",
       한국정보과학회논문지, 제31권, 4호, pp.143-149, April, 2004. (ISSN 1229-6848)
    Youngjoong Ko and Jungyun Seo
       "Text Classifiction Based on the Feature Projection Technique with Robustness from
       Noisy Data," Journal of Korean Institute of Information Scientists and Engineers (KIISE),
       Vol.31, No.4, pp.143-149, April 2004. (in Korean)

# 2003

  • Youngjoong Ko, Kono Kim, and Jungyun Seo
       "Topic Keyword Identification for Text Summarization Using Lexical Clustering"
       IEICE Transactions on Information and System, Vol. E86-D, No. 9, pp.1695-1701,
       September 2003.    (
    SCIE,ISSN 0916-8532)

# 2002

  • 고영중, 서정연
       "문서 관리를 위한 자동 문서 범주화에 대한 이론 및 기법",
       정보관리연구논문지, 제33권, 2호, pp.19-32, June, 2002. (ISSN 0254-3621)
    Youngjoong Ko and Jungyun Seo
       "An Automatic Text Categorization Theories and Techniques for Text Management"
       Journal of Information Management, Vol.33, No.2, pp.19-32, June 2002. (in Korean)
  • 고영중, 박진우, 서정연
       "문장 중요도를 이용한 자동 문서 범주화",
       한국정보과학회논문지, 제29권, 5.6호, pp.417-424, June, 2002. (ISSN 1229-6848)
    Youngjoong Ko, Jinwoo Park, and Jungyun Seo
       "Improving Text Categorization by Text Summarization Techniques,"
       Journal of Korean Institue of Information Scientists and Engineers (KIISE),
       Vol.29, No.5-6, pp.417-424, June 2002 (in Korean)

# 2000

  • Sooyong Park, Harksoo Kim, Youngjoong Ko, and Jungyun Seo
       "Implementation of an Efficient Requirements Analysis Supporting System Using Similarity
       Measure Techniques",
       Information and Software Technology, Elsevier Science, Vol. 42, No. 6, pp.429-438,
       15 April 2000.
       (
    SCIE,ISSN 0950-5849)

  • 고영중, 강기선, 김재선, 박수용, 서정연
       "요구 사항 문장 범주화를 이용한 웹 기반의 요구 사항 추출 지원 시스템",
       한국정보과학회논문지, 제27권, 4호, pp. 384-392, April. 2000. (ISSN 1229-6848)
    Youngjoong Ko, Kisun Kang, Jeaseon Kim, Sooyong Park, and Jungyun Seo
       "Web-based Requirements Elicitation Supporting System Using Requirements Categorization,"
       Journal of Korean Institue of Information Scientists and Engineers(KIISE), Vol. 27, No. 4,
       pp.384-392, April 2000. (in Korean)

  • 김학수, 고영중, 박수용, 서정연
       "유사도 측정 기법을 이용한 효율적인 요구 분석 지원 시스템의 구현",
       한국정보과학회논문지, 제27권, 1호, pp.13-23, Jan. 2000. (ISSN 1229-6848)
    Harksoo Kim, Youngjoong Ko,Sooyong Park, and Jungyun Seo
       "An Efficient Analysis Method for User Requirements by Similarity Measure Techniques"
       Journal of Korean Institute of Information Scientisits and Engineers (KIISE),
       Vol.27, No.1, pp. 13-23, January 2000. (in Korean)