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# Shiwei Weng 翁士伟
I am a fourth-year Ph.D. student in the Department of Computer Science at Johns Hopkins University. My advisor is Dr. Scott Smith and I am a member of The Programming Languages Laboratory. I got my joint bachelor’s degree from Fudan University and University College Dublin in 2013 and master degree from JHU in 2018. My one-page CV is here (updated Aug 2021).
My research interests span several aspects of programming languages. I believe programming languages can provide solutions to problems in other areas of computer science. I am active in our lab’s weekly seminar and happy to chat about them.
# Research
Demand-Driven Symbolic Execution [lab page]
- Symbolic backwards execution of functional languages
- Start from any position in programs
- (Done) Establish the soundness and develop a test generation algorithm. See publication [ICFP 2020].
- (In progress) Optimization (function summarization), new features (mutable states), new approaches (model checking) [repo]
# Work Experience
Microsoft Research Lab, Redmond (virtually), Summer 2021,
I worked as a Research Intern on Checked C project. I designed and implemented a dataflow analysis which gathers pre/post-conditions at program points and an SMT-based proof framework to reduce false-positive compiler warnings. It’s a wonderful summer. Thanks to my mentor Sulekha Kulkarni, the boss David Tarditi and all the team members!
Something before
I got an internship offer from Nomadic Labs on Linear Types and OCaml program analysis for summer 2019. However, due to the COVID-19 and regulations for international students in United States, I cannot make it physically nor virtually. What a pity.
Before graduate school, I took several jobs in start-ups and freelance work, mostly in full-stack web programming.
# Professional Experience
- Head Teaching Assistant, 601.426/626 Principles of Programming Languages, Spring 18 (evaluation 1 2), Spring 19 (evaluation)
- Course Assistant, 601.329 Functional Programming in Software Engineering, Fall 20
- System Administrator of our lab
- Volunteer for SPLASH 2017, SPLASH 2018, ICFP 2020, OCaml 2020
- Attend PLISS 2017, PLMW@SPLASH 2017
# Publications
Zachary Palmer, Theodore Park, Scott Smith, Shiwei Weng, Higher-Order Demand-Driven Symbolic Evaluation, ICFP 2020 [page] [doi] [pdf] [repo] [talk (slide)]
# Misc
I play video games. The unexamined game is not worth playing.
I am married to Xiaoxi Chen 陈小溪. I teach her programming and she teaches me human anatomy.
We have a cat but there is usually more at home (2 cats, 3 cats).