Tianyu Chen

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I am a PhD candidate in Computer Science at Indiana University Bloomington, advised by Professor Jeremy G. Siek. I am a member of PL wonks.

I enjoy building mechanized proofs and formalizing programming languages in proof assistants. My recent work focuses on reasoning about gradually typed languages, where some of the type information is statically unknown, and modeling their properties in Agda.

I am the lead associate instructor for CSCI C343 Data Structures in Spring 2024.

I organized the Programming Languages Reading Group (PLRG) from 2021 to 2023.

I was a software verification intern at CertiK during summer 2021, where I worked on certifying the functional correctness of system software using Coq and CompCert.

Gradual Security Typing	link
Parameterized Cast Calculi	link

(API credit)

• Quest Complete: the Holy Grail of Gradual Security NEW!
  Tianyu Chen, Jeremy G. Siek
  PLDI 2024 (to appear)
  Arxiv, PDF, PL Wonks, Artifact, Code
• Parameterized Cast Calculi and Reusable Meta-theory for Gradually Typed Lambda Calculi
  Jeremy G. Siek, Tianyu Chen
  Journal of Functional Programming (JFP)
  DOI, Arxiv, Code
• Mechanized Type Safety for Gradual Information Flow
  Tianyu Chen, Jeremy G. Siek
  LangSec 2021
  DOI, PDF, Talk, Slides, Code
• Racing in Hyperspace: Closing Hyper-threading Side Channels on SGX with Contrived Data Races
  Guoxing Chen, Wenhao Wang, Tianyu Chen, Sanchuan Chen, Yinqian Zhang, XiaoFeng Wang, Ten-Hwang Lai, Dongdai Lin
  IEEE Security and Privacy (Oakland) 2018
  DOI
• Characterizing Smartwatch Usage in the Wild
  Xing Liu, Tianyu Chen, Feng Qian, Zhixiu Guo, Felix Xiaozhu Lin, Xiaofeng Wang, Kai Chen
  MobiSys 2017
  DOI
• Paxos Made Transparent
  Heming Cui, Rui Gu, Cheng Liu, Tianyu Chen, Junfeng Yang
  SOSP 2015
  DOI

• Generic Blame-Subtyping Theorem in Agda Using Abstract Binding Trees
  Tianyu Chen
  POPL 2022 Student Research Competition
  Extended abstract, Poster, Certificate

• Mechanized Noninterference for Gradual Security
  Tianyu Chen, Jeremy G. Siek
  Arxiv, PDF

Lead Associate Instructor	Data Structures	CSCI-C343	Spring 2024
Associate Instructor	Data Structures, Honors	CSCI-H343	Fall 2023
Associate Instructor	Secure Protocols	CSCI-B433, INFO-I433	Spring 2020
Associate Instructor	Malware: Threat and Defense	CSCI-B546, INFO-I521	Fall 2019
Associate Instructor	Secure Protocols	CSCI-B433, INFO-I433	Spring 2019

• Indiana University academic calendar link
• Spacemacs Agda layer link

• Email: \(\mathtt{chen512} @ \mathtt{indiana} . \mathtt{edu}\)
• Office: Cubicle 3025B. Luddy Hall, Indiana University. 700 N. Woodlawn Ave. Bloomington, IN 47408

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