Caroline Lemieux

Grad admission virtual info session. Wed Dec 3, 2025. Session 1: 8:00AM - 9:30 AM PT; Session 2 5:00PM - 6:30PM PT. Register Now!

Curious about graduate programs at UBC Computer Science? Join our virtual Q&A sessions about admissions to our MSc, PhD-track and PhD program on Wed Dec 3! Register here: www.cs.ubc.ca/graduate-pro...

Thank you!

I am extremely honoured to be appointed as a new Canada Research Chair, joining many esteemed colleagues at UBC and in the country at large!

We are recruiting for two assistant professor positions, with priority areas in: visualization; robotics & reinforcement learning; data mangagement & data mining. Applications due December 10th! See more at the link below.

UBC Computer Science makes waves at programming language conference ICFP/SPLASH

The UBC Software Practices Lab is heading to #icfpsplash25! 4 ICFP/OOPSLA talks, 1 SPLASH-E, 5 talks at associated workshops... check it out: www.cs.ubc.ca/news/2025/10...

Release Pynguin 0.41.0 · se2p/pynguin Fix subject_properties aren't registered when running Pynguin on an imported module Update documentation (Codestyle, Code Overview) Add LLM-Agent guidelines Add PynguinML mode: Parsing and test gen...

CodaMOSA was built on Pynguin version 0.18 .... since then, Pynguin has been very much improved. Pynguin version 0.41.0 includes the LLMMOSA Algorithm, which integrates core parts of CodaMOSA into modern Pynguin! Many kudos to Pynguin contributors for this. github.com/se2p/pynguin...

A common follow-up, whenever we bring up parametric generators is "but can't those byte-level mutations result in a totally different generated input?"

....they do, but our experiments found those more destructive mutations generally lead to higher coverage. Our students fully explored this in:

after years of fuzzing libxml2 I am happy to announce I have now actually used xmllint

I was today days old when I learned that IEEETran format has special figure captions overwritten by \usepackage{subcaption}; instead one should use \usepackage[caption=false]{subfig}. tex.stackexchange.com/questions/30...

Back from #ICSE25! I'm looking forward to reading "No Harness, No Problem: Oracle-guided Harnessing for Auto-generating C API Fuzzing Harnesses", by @gabriel-sherman.bsky.social and @snagycs.bsky.social.(users.cs.utah.edu/~snagy/paper...). Nice progress in fuzz driver generation!

under the header "projects", a logo consisting of a black shadow of a duck on the left hand side of the words ": QuAC". Where the duck and the text ": QuAC" intersect, the shadow is whited-out.

Finally added a little logo for QuAC (our attribute-based python type inference tool, paper: doi.org/10.1145/3689... + repo: github.com/jifengwu2k/q...) to my website :).

There's still time to submit to FUZZING'25! This year, we're accepting both the (now classic) registered reports _and_ new short papers (fuzzing nuggets). Deadline is now March 26th! fuzzingworkshop.github.io

Was already on my reading list, gives me more incentive to read it :P

🧠 Older models memorize more: Models like CodeGen, and CodeLlama show significantly higher leakage on Defects4J than newer models (e.g., Llama 3.1). They often reproduce patches verbatim, to the point that it’s weird (including comments!!) 🔥 3/