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+* Yiyun Liu
+- E-mail :: [[mailto:liuyiyun@seas.upenn.edu][liuyiyun@seas.upenn.edu]]
+- Social :: [[https://bsky.app/profile/ohqo.bsky.social][ohqo.bsky.social@BluesKy]]
+- Blog :: [[https://blog.electriclam.com][blog.electriclam.com]]
+- Github :: [[https://github.com/yiyunliu][yiyunliu]]
+
+I am currently a fourth-year CS PhD student at University of
+Pennsylvania, advised by [[https://www.seas.upenn.edu/~sweirich/][Prof. Stephanie Weirich]]. I got my MS degree from University of Maryland, advised
+by [[https://www.cs.umd.edu/~mwh/][Prof. Michael Hicks]].
+
+My current research is about integrating dependently typed
+programming languages and graded type systems. I investigate how
+dependent types and grades can benefit from each other. I mechanize
+all my correctness proofs, from syntactic type soundness to semantic
+logical consistency. I'm looking for ways to make such proofs as
+streamlined as possible so we can be more confident about the design
+of our systems while still being productive at exploring new features.
+
+My past research involves formal verification of
+replicated data types, random testing, and modeling of CheckedC in
+Redex.
+
+* Research
+- Consistency of a Dependent Calculus of Indistinguishability (*POPL25*, [[file:papers/dcoiomega.pdf][paper]]) ::
+  *Yiyun Liu*, Jonathan Chan, Stephanie Weirich
+
+- Theoretical Pearl: Short and Mechanized Logical Relation for Dependent Type Theories (Unpublished, [[file:papers/mltt.pdf][draft]]) ::
+  *Yiyun Liu*, Jonathan Chan, Stephanie Weirich
+
+- Internalizing Indistinguishability with Dependent Types (*POPL24*, [[file:papers/dcoi.pdf][paper]]) ::
+  *Yiyun Liu*, Jonathan Chan, Jessica Shi, Stephanie Weirich
+
+- Dependently-Typed Programming with Logical Equality Reflection (*ICFP23*, [[file:papers/systemde.pdf][paper]],[[https://doi.org/10.1145/3607852][doi]]) ::
+  *Yiyun Liu*, Stephanie Weirich
+
+- A Formal Model of Checked C (*CSF22*, [[file:papers/checkedc.pdf][paper]],[[https://doi.ieeecomputersociety.org/10.1109/CSF54842.2022.9919657][doi]]) ::
+  Liyi Li, *Yiyun Liu*, Deena Postol, Leonidas Lampropoulos, David Van Horn, Michael Hicks
+
+- Verifying Replicated Data Types with Typeclass Refinements in Liquid Haskell (*OOPSLA20*, [[file:papers/vrdt.pdf][paper]],[[https://doi.org/10.1145/3428284][doi]]) ::
+  *Yiyun Liu*, James Parker, Patrick Redmond, Lindsey Kuper, Michael Hicks, Niki Vazou