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Basics

Name Liancheng Gong (Krystal)
Email lianchenggong0224@gmail.com

Education

  • 2025.08 - Present

    College Park, MD

    Ph.D.
    University of Maryland
    Information Studies
  • 2022.08 - 2024.05

    Philadelphia, PA

    MSE
    University of Pennsylvania
    Data Science
    • Big Data Analytics
    • Statistics for Data Science
    • Database and Information Systems
    • Intro to Software Development
    • Principles of Deep Learning
    • Artificial Intelligence
    • Ethical Algorithm Design
  • 2018.08 - 2022.05

    NYC, Abu Dhabi, Shanghai

    B.S.
    New York University
    Data Science
    • Probability and Statistics
    • ODE
    • Intro to Math Modeling
    • Data Structures
    • Machine Learning
    • Information Visualization
    • NLP
    • Algorithms
    • Decision Making Under Uncertainty
    • Human-Centered Data Science

Awards

Work

  • 2024.09 - 2025.07

    Philadelphia, PA

    Researcher (with Prof. Harry Zhang)
    Drexel University, Computer Science
    • Structured LLM outputs into PDDL domain/problem files for verifiable planning
    • Iteratively refined outputs with environment feedback; analyzed recurring errors; tried memory/partial-editing
  • 2024.08 - 2025.07

    Philadelphia, PA

    Research Coordinator (with Prof. Daniel Hopkins)
    Univ. of Pennsylvania, Political Science
    • Analyzed polls/exit polls for FiveThirtyEight 2024 coverage
    • Tracked US campaign ads and Russian media topics; scraped 2M+ VK posts and built TF-IDF/BERT features
    • Raised political-content share from 10%→50% via logistic regression selection
    • Designed GPT-based annotation/translation (≈90% agreement with humans)
    • BERTweet finetune on symbolic rhetoric (e.g., "us vs them")
  • 2024.02 - 2024.05
    Data Scientist (with Yuxuan Zhang, Regina Ruane)
    UPenn, Computational Social Science Lab
    • Bias tracking on topics (Biden’s age, NATO); automated ETL for Nielsen streams
    • Maintained AWS DB; standardized schemas and network names
  • 2023.02 - 2023.12
    Graduate Research Assistant
    UPenn, Atlas (with Mark Whiting)
    • PDF segmentation + QA with LLMs (DMN/Parallel Context)
    • Curated 300+ papers and 300+ questions; improved coverage and accuracy

Projects

Volunteer

  • 2022.10 - 2023.05
    Coding Instructor
    Fife Academy Coding Club, UPenn
    100+ K–12 students; curriculum + labs + feedback

Skills

Programming
Python
R
SQL
Java
Libraries
NumPy
Pandas
SciPy
scikit-learn
PySpark
Matplotlib
Seaborn
PyTorch
TensorFlow
Tools
AWS (RDS/SageMaker/S3/EMR)
MySQL
MongoDB
Tableau
Power BI
Git
Linux
Stata
MATLAB
ETL