About Me

A PhD student in Graduate School of Library and Information Science. Researches on the intersection of technology, human, and music.

Contact Details

Kahyun Choi
501 E. Daniel Street, MC-493
The Graduate School of Library and Information Science #329 Champaign, IL 61820-6211

ckahyu2 AT illinois DOT edu

Research Interests

Song lyrics analysis

  • Subject detection from lyrics
  • Subject detection from the user interpretations of the lyrics, which are available as a form of social/crowdsourced data
  • Audio music classification

  • Audio features for mood classification
  • Metadata

  • Crowdsourced music annotation
  • Cross cultural differences in the music moods and genres
  • Evaluations of Music Information Retrieval (MIR) systems

  • Community-driven system-centered evaluation
  • User-centered user experience evaluation
  • Informetrics study

  • Social network analysis on co-authorship networks
  • Education

    University of Illinois at Urbana-Champaign

    PhD in Library and Information Science From Aug. 2011 (currently pursuing)

    Korea Advanced Institute of Science and Technology (KAIST)

    MS in Media Program Feb. 2010

    Ajou University

    BE in Information and Computer Engineering Feb. 2005

    • Division of Information and Computer Engineering
    • Graduated with honors

    University of Illinois at Chicago

    Exchange Student Fall 2004

    • Dept. of Computer Science

    Work

    University of Illinois at Urbana-Champaign

    Co-Instructor Fall 2016

    Research Assistant Aug. 2011 - Aug. 2016

    Teaching Assistant 2013 - 2015

    Naver Corp.

    Software Developer Jan. 2009 - Jun. 2011

    • Member System Development Team

    Postvisual

    Intern Jun. 2006 - Jul. 2006

    Publication

    Peer Reviewed Publications

    1. Anders Friberg, Ragnar Schön, Anders Elowsson, Kahyun Choi, and J. Stephen Downie, "Cross-cultural aspects of perceptual features in K-Pop: A pilot study comparing Chinese and Swedish listeners,” in Proceedings of the 43rd International Computer Music Conference, (ICMC), 2017
    2. Xiao Hu, Kahyun Choi, Yun Hao, Sally Jo Cunningham, Jin Ha Lee, Audrey Laplante, David Bainbridge and J. Stephen Downie, "Exploring the Music Library Association Mailing List: A Text Mining Approach", in Proceedings of the 18th International Society for Music Information Retrieval Conference, (ISMIR), 2017
    3. Kahyun Choi, Jin Ha Lee, Xiao Hu, and J. Stephen Downie, "Music Subject Classification Based on Lyrics and User Interpretations", Proceedings of the American Society for Information Science and Technology (ASIS&T), 2016.
    4. Xiao Hu, Kahyun Choi, Jin Ha Lee, Audrey Laplante, Yun Hao, Sally Jo Cunningham and J. Stephen Downie, "WiMIR: An Informetric Study on Women Authors in ISMIR", in Proceedings of the 17th International Society for Music Information Retrieval Conference, (ISMIR), 2016.
    5. Yun Hao, Kahyun Choi, and J. Stephen Downie, " Exploring J-DISC: Some Preliminary Analyses", in Proceedings of the 3rd International Digital Libraries for Musicology workshop (DLfM), 2016.
    6. Xiao Hu, Kahyun Choi, J. Stephen Downie, "A Framework for Evaluating Multimodal Music Mood Classification", Journal of the Association for Information Science and Technology, 2016.
    7. Xiao Hu, Jin Ha Lee, David Bainbridge, Kahyun Choi, Peter Organisciak, and J. Stephen Downie, "The MIREX Grand Challenge: a framework of holistic user experience evaluation in music information retrieval", Journal of the Association for Information Science and Technology, 2015.
    8. Jin Ha Lee, Xiao Hu, Kahyun Choi, and J. Stephen Downie, "MIREX Grand Challenge 2014 on User Experience: Qualitative analysis of user feedback", in Proceedings of the 16th International Society for Music Information Retrieval Conference, (ISMIR), 2015.
    9. Kahyun Choi, Jin Ha Lee, Craig Willis, J. Stephen Downie, "Topic Modeling Users' Interpretations of Songs to Inform Subject Access in Music Digital Libraries", In Proceedings of the IEEE/ACM Joint Conference in Digital Libraries (JCDL), 2015.
    10. J. Stephen Downie, Xiao Hu, Jin Ha Lee, Kahyun Choi, Yun Hao, and Sally Jo. Cunningham, "Ten Years of MIREX (Music Information Retrieval Evaluation eXchange): Reflections, Challenges and Opportunities", in Proceedings of the International Society of Music Information Retrieval Conference (ISMIR), Taipei, Taiwan, Oct. 2014.
    11. Xiao Hu, Jin Ha Lee, Kahyun Choi, and J. Stephen Downie, "A Cross-Cultural Study of Mood in K-POP Songs", in Proceedings of the International Society of Music Information Retrieval Conference (ISMIR), Taipei, Taiwan, Oct. 2014.
    12. Kahyun Choi, Jin Ha Lee, and J. Stephen Downie, "What is this song about anyway?: Automatic classification of subject using user interpretations and lyrics," In Proceedings of the IEEE/ACM Joint Conference on Digital Libraries (JCDL), pp. 453-454, Sep. 2014.
    13. Jin Ha Lee, Kahyun Choi, Xiao Hu, and J. Stephen Downie, "K-Pop Genres: A Cross Cultural Exploration", in Proceedings of the International Society of Music Information Retrieval Conference (ISMIR), Curitiba, Brazil, Oct. 2013.

    MS Thesis

    Presentations

    Doctoral Colloquia

    1. "Music Thumbnailing", 2016 Annual Meeting of the Association for Information Science and Technology (ASIS&T) Doctoral Colloquium, Copenhagen, Denmark, Oct. 18, 2016.
    2. "From Lyrics to Their Interpretations: Automated Reading between the Lines", the IEEE/ACM Joint Conference in Digital Libraries (JCDL) Doctoral Consortium, 2015

    Talks

    1. "Information Retrieval", Digital Libraries (LIS560LE), Spring 2015.
    2. "Automatic Music Subject Classification and a Cross-Cultural Exploration of K-Pop Genre", Shazam, Menlo Park, CA, Aug. 14, 2014.
    3. "A Cross-Cultural Study on the Mood and Genre of Korean Pop Songs", Pandora Radio, Oakland, CA, Jun. 19, 2014.
    4. "A Cross-cultural Exploration of K-Pop Moods and Genres", KTH Royal Institute of Technology, Sweden, May 3, 2014 - May 9, 2014.

    Posters

    1. "Topic Modeling Users’ Interpretations of Songs to Inform Subject Access in Music Digital Libraries", GSLIS Research Showcase 2015, Apr. 3, 2015.
    2. "The Impact of Music Genre on Music Similarity: A Qualitative Exploration", GSLIS Research Showcase 2015, Apr. 3, 2015.
    3. "Exploring Music Subject Classification Based on User Interpretations of Music", Midwest Music Information Retrieval Gathering (MMIRG), Evanston, IL, Jun. 14, 2014.
    4. "K-Pop Genres: A Cross Cultural Exploration", GSLIS Research Showcase 2014, Mar. 14, 2014.
    5. "Music Mood Tag Prediction with Dimension Reduced Tag Space", GSLIS Research Showcase 2013, Mar. 29, 2013.

    Awards

    Awards

  • Women in Music Information Retrieval (WiMIR) Award, ISMIR, 2016
  • Honors

    Honors & Scholarships

    Merit based scholarships Spring 2004, fall 2003, spring 2002, fall 2001

    • Ajou University

    Graduated with honors Feb. 2005

    • Ajou University

    Professional Activities

    Research Community Work

  • The Music Information Retrieval Evaluation eXchange (MIREX), Evaluation Committee member, (2011 - Present)
  • As a Reviewer of Journals and Conferences

  • The International Society for Music Information Retrieval Conference (ISMIR)
  • ACM Transactions on Intelligent Systems and Technology (TIST)
  • The American Society for Information Science and Technology (ASIS&T)
  • International Journal on Digital Libraries (IJDL)
  • Skills

    In the order of fluency
  • Matlab, JavaScript, Python, R, Java, C, PHP, C with PIC
  • Linux, NLP tools, scikit-learn, Mallet, NodeXL, Dedoose, Weka, and Amazon MTurk