LD
Research in the world

Impact

Public-facing research communication: media coverage, keynote and invited talks, conference presentations, and research engineering.

Media spotlight

NBC 11Alive

December 2025

Georgia State study uses AI to better spot depression.

Televised and online news coverage.

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The Korea Times Atlanta

December 2025

AI-based research identifies linguistic markers of depression in online communities.

Coverage of AI-driven mental health research and its social implications. Republished in: The Korea Times Florida (December 2025).

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Atlanta JoongAng Daily

December 2025

Georgia State study highlights AI's role in detecting depression through language.

Korean-language media coverage of AI-based interdisciplinary research.

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Georgia State University Newsroom

October 2025

Study: AI Can Spot Signs of Depression in Reddit Posts.

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Science X Network (Phys.org)

October 2025

AI Can Spot Signs of Depression in Reddit Posts.

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Keynote & invited talks

Guest speakerNovember 2025

Human versus Machine Language Learning

Special Lecture for the course Language and Mind · Georgia State University, Georgia

KeynoteNovember 2024

Automatic Language Evaluation Using Machine Learning: Integrating LLM with Lexical and Syntactic Features

Linguistics Symposium · University of North Georgia, Georgia

Invited speakerJuly 2024

Research Applications and Possibilities of Natural Language Processing and Machine Learning in the Fields of Linguistics and Education

Korea Association of Multimedia-Assisted Language Learning · Seoul, Korea

Conference record

11 presentations at international and national conferences.

2025

  • The development of 'ReaL2Chat', a GenAI TBLT chatbot platform: Prompt engineering for tasks designed with communicative goals and effects on learning outcomes

    Kim, YJ., Dixon, D., Kim, Y., & Cathey, R.

    Computer-Assisted Language Instruction Consortium · San Diego State University, California · May 2025

  • Task Performance with Generative AI as an Interlocutor: Input Complexity, Task Type, and Student Perceptions

    Kim, YJ., Dixon, D., Kim, Y., & Cathey, R.

    TBLT Conference · University of Groningen, Netherlands · April 2025

  • How different is language use across online mental health communities? Machine-learning and corpus-analytic approaches

    Kim, Y. & Römer-Barron, U.

    American Association for Applied Linguistics · Denver, Colorado · March 2025

  • Effects of a customized GenAI platform on the writing development of recently immigrated English learners

    Kim, YJ., Dixon, D., Kim, Y., & Cathey, R.

    American Association for Applied Linguistics · Denver, Colorado · March 2025

  • Defining “rhetoric” in second language writing contexts: A corpus-based approach

    Jordan, J., Dixon, D., & Kim, Y.

    American Association for Applied Linguistics · Denver, Colorado · March 2025

2024

  • Detection and Analysis of Depression-related Language in a Corpus of Online Texts: Machine Learning and Topic Modeling Approaches

    Kim, Y. & Römer-Barron, U.

    American Association for Corpus Linguistics · Oregon · September 2024

  • Machine learning insights into L2 development: Tracing Collocation Use Across Proficiency Levels

    Kim, Y.

    American Association for Corpus Linguistics · Oregon · September 2024

  • Generative AI for Supporting Recently Immigrated English Learners' L2 Lexical Development: Linguistic Alignment, Lexical Complexity, and Learner Perceptions

    Dixon, D., Kim, YJ., & Kim, Y.

    Computer-Assisted Language Instruction Consortium · Carnegie Mellon, Pittsburgh, Pennsylvania · May 2024

  • Distinguishing PTSD from Anxiety Disorders: A Machine Learning Investigation of Linguistic Patterns in Online Mental Health Communities

    Kim, Y.

    South NLP Symposium · Emory University, Georgia · April 2024

2022

  • The relationship between POS tag and human judgment-based text readability score

    Kim, Y. & Crossley, S.

    The Society for Text and Discourse · Georgia · July 2022

  • Using sentence embeddings to predict text readability: A comparison

    Crossley, S., Scherber, Y., Choi, J. S., Lucka, M., & Kim, Y.

    The Society for Text and Discourse · Georgia · July 2022

Research engineering

Software built in the course of funded research projects.

May 2024 – May 2025

Generative AI for Supporting Recently Immigrated English Learners' Language Development through Alignment: The Role of Input Complexity and Learner Proficiency

Research on the Challenges of Acquiring Language & Literacy (RCALL) · $48,500

  • Developed Generative AI-based human-computer interaction system for language learners
  • Implemented Text-to-Speech, Speech-to-Text, and Speech-to-Speech functionalities to enhance human-computer interaction
  • Designed and managed data collection and developed NLP scripts for data analysis

August 2023 – December 2023

Generative AI for Supporting Recently Immigrated English Learners' L2 Development through Alignment: The Role of Task Input Complexity and Interaction Modalities

Cambridge English Funded Research Programme (FRP) · £13,000

  • Developed GPT-based chatbot designed to help the immigrant population
  • Designed NLP scripts for data analysis including measuring lexical sophistication, syntactic complexity, and large-language-model-based semantic alignment
  • Developed NLP scripts for collocation and semantic analysis