me
Jinwoo Kim
Ph.D Student in Computer Science and Engineering
University of California-San Diego
I am a fifth-year Ph.D. student at UC San Diego, working in the intersection of programming languages and machine learning with Loris D'Antoni.

Previously, I did my Masters at UW-Madison also with Loris, then took a leave of absence to perform mandatory military service as a researcher for South Korea with Chung-Kil Hur.

Email:
Office: 3262 at Computer Science and Engineering Building, UCSD
Research Interests
My research interests lie broadly in the realm of formal methods and their intersection with machine learning. Recently, my research has focused on utilizing formal methods to enhance the reliability and efficiency of LLMs, during both inference and training.

For examples, check out Diffinity, where we formally steer diffusion models to generate text that satisfies a regular expression, or Constraint-Aware Training, where we show how LLM training can be made more efficient by applying formal information that can be by inferred by an external symbolic engine.

I am on the job market this academic year (2026-2027), for positions in both academia and industry!
Papers
Preprint

The Computational Complexity of Program Synthesis [pdf]
Jinwoo Kim, Loris D'Antoni
Preprint

Learning the Error Patterns of Language Models [pdf]
Jinwoo Kim, Taylor Berg-Kirkpatrick, Loris D'Antoni
Preprint

Understanding Enrichment in Reinforcement Learning [pdf]
Jinwoo Kim, Shraddha Barke
OOPSLA 2026

Incremental Program Synthesis from Event Logs [pdf]
Jinwoo Kim, Victor Nicolet, Joey Dodds, Loris D'Antoni
ICML 2026

Diffusion Models can Obey Formal Syntax [pdf]
Jinwoo Kim, Taylor Berg-Kirkpatrick, Loris D'Antoni
OOPSLA 2025

Semantics of Sets of Programs [pdf]
Jinwoo Kim*, Shaan Nagy*, Thomas Reps, Loris D’Antoni       (* Equal contribution)
POPL 2025

Archmage and CompCertCast: End-to-End Verification Supporting Integer-Pointer Casting [pdf]
Yonghyun Kim, Minki Cho, Jaehyung Lee, Jinwoo Kim, Taeyoung Yoon, Youngju Song, Chung-Kil Hur
OOPSLA 2024

Automating Unrealizability Logic: Hoare-style Proof Synthesis for Infinite Sets of Programs [pdf]
Shaan Nagy, Jinwoo Kim, Thomas Reps, Loris D’Antoni
PLDI 2023

Fair Operational Semantics [pdf]
Dongjae Lee, Minki Cho, Jinwoo Kim, Soonwon Moon, Youngju Song, Chung-Kil Hur
POPL 2023

Unrealizability Logic [pdf] [corrigendum] [slides]
Jinwoo Kim, Loris D'Antoni, Thomas Reps
CAV 2021

Programmable Program Synthesis [pdf]
Loris D'Antoni, Qinheping Hu, Jinwoo Kim, Thomas Reps
POPL 2021

Semantics-Guided Synthesis [pdf] [talks] [slides|5min_slides]
Jinwoo Kim, Qinheping Hu, Loris D'Antoni, Thomas Reps
Workshops
VERICODEGEN
@ Neurips 2026
Constraint-Aware Training [pdf]
Jinwoo Kim
Talks
Jan. 2020
@ POPL 2020 SRC
"Proving Unrealizability for Imperative Syntax-Guided Synthesis Problems"

Awards
Jan. 2020

I received the 1st Place Graduate Award at the Student Research Competition at POPL 2020, for my work on "Proving Unrealizability for Imperative Syntax-Guided Synthesis Problems".
Sep. 2019 ~

I am grateful to be awarded a fellowship from the Korea Foundation of Advanced Studies for studying abroad.