Hello! I'm Jin Choi!

I am a Ph.D. student in Computational Science and Engineering at Georgia Institute of Technology, advised by Professor Haesun Park.
My research interests have evolved to include Healthcare Recommender Systems, Interactive Machine Learning, and Natural Language Processing.
I have conducted extensive research in knowledge graph mining, targeted topic modeling, and interactive visualization.
Recently, I've been working on patient clustering via integrated profiling of clinical and digital data.



AI Research Engineer Intern

@ UpstageKorea, Summer 2021
  - Mentor: Hwalsuk Lee
  - Developed a data cleansing system for OCR annotated data to enhance quality and reliability

Research Scientist Intern

@ Megagon LabsMountain View, CA, May 2020 - Aug 2020
  - Mentors: Çağatay Demiralp, Sara Evensen

  - Proposed a system for data programming by demonstration for span-level annotation

Graduate Research Assistant

@ Georgia Institute of Technology, Atlanta, GA, Aug 2018- Present 

Undergraduate Research Assistant

@ Seoul National University, Seoul, Korea, Aug 2016 - Jan 2018


@ Georgia Institute of Technology, Atlanta, GA, USA, Aug 2018 - Present

M.S. in Computational Science and Engineering

@ Georgia Institute of Technology, Atlanta, GA, USA, Aug 2018 - May 2022

B.S. in ECE (Minor: CSE)

@ Seoul National University, Seoul, Korea, Mar 2011 - Feb 2018



WellFactor [New]

Patient Clustering via Integrated Profiling of Clinical and Digital Data

Dongjin Choi, Andy Xiang, Ozgur Ozturk, Deep Shrestha, Barry Drake, Hamid Haidarian, Faizan Javed, Haesun Park

CIKM 2023   [PDF]


McVis [New]

Co-embedding Multi-type Data for Information Fusion and Visual Analytics

Dongjin Choi, Barry Drake, and Haesun Park

Fusion 2023   [PDF]



Putting Humans in the Natural Language Processing Loop: A Survey

Zijie J. Wang, Dongjin Choi, Shenyu Xu, Diyi Yang

EACL Workshop on Bridging HCI and
2021   [PDF]



TopicSifter: Interactive Search Space Reduction Through Targeted Topic Modeling 

Hannah Kim, Dongjin Choi, Barry Drake, Alex Endert, Haesun Park 

IEEE VIS 2019   [PDF] 



Zoom-SVD: Fast and Memory Efficient Method for Extracting Key Patterns in an Arbitrary Time Range

Jun-gi Jang, Dongjin Choi, Jinhong Jung, U Kang

CIKM 2018   [PDF]   [Homepage]


Activity Prediction



OCR Annotation Tool

Internship Project in Upstage AI,  May 2021 - Aug 2021

Boosted OCR Annotation process with the interactive user interface by validating and annotating labels at the same time



Information Visualization term project (CS7450), Aug 2019 - Dec 2019

Interactively visualized 2019 democratic presidential debate

- Try Demo


People Flow Recognition

People flow recognition for intelligent building systems (IBS), Sovico, Samsung, Sep 2017 - Jan 2018

Implement a pedestrian simulator (watch simulation video)


Deep Learning Term Project

Deep learning term project, Seoul Nathional University, Mar 2017 - June 2017

Term project for graduate deep learning course @SNU

Developed CNN model for human identification on image using transfer learning technique

Awards & Honors

Humantech Paper Award (Bronze prize, Co-author)

@ Samsung, Feb 2017
   - Included in the top 6 in 'Computer Science & Engineering' division

Best term paper award in 'Writing in Science & Technology'

@ Seoul National University, Dec 2015   paper (written in Korean)
  - 1st place among 50 teams
  - The paper proposed a new design for motorcycle helmet shield to reduce driver's air pollutant inhalation
  - I drew the blueprint for 3-D printing and implemented Arduino experiment code


Data Analysis Method and Apparatus for Sparse Data

- U Kang, Dongjin Choi, Jun-Gi Jang
- Korean patent number: 10-2017-0158496, (filed on Nov, 24, 2017).


Mentoring program for Dream Camp

- Seongwon High School, Namwon, Korea, Summer 2015
- I served as an advisor and mentor for students of Seongwon high school

Volunteer work as one of the co-founders of Teach for Korea

- Seoul, Korea, 2011-2012
- I was a full-time tutor for high school students in a low-income family

- I served more than 300 hours of total

English debate TA for GLPS

- Hoengseong, Korea, Summer 2011
- My high school hosts a summer vacation camp, GLPS, for elite young students

- I worked as a TA for English debate

Volunteer work as the leader of For & From Them

- Rania Mission School, Kolkata, India, Summer 2011
- I taught various activities (origami, mathematical quizzes) to young students in the low-income family

- I served as the manager for the volunteer work, I managed overall plans and schedules for the work

- Jochiwon, Korea, Winter 2010
- I attended the winter school for algorithms and combinatorics as an only high school student

© Jin Choi 2023
Computer Science Researcher
Last updated: 8/12/2023