about ▽
Hello! I am a researcher with broad interests across search, personalization, conversational AI, and LLM reasoning. I am currently based in the Seattle area working with the Frontier Tuning team at Microsoft. I completed my PhD in 2022 at Johns Hopkins Universtiy (CLSP) .
I also solve and occasionally write puzzles and puzzlehunts. Other hobbies include cycling, rock climbing, and board/video games.
contact: hello@patrickxia.me |
discord: @patrickx |
github: pitrack
Last updated: oct 5 2026
news ▽
Sep 2026: Siyi Liu's internship project, ConflictScore, was accepted to EMNLP.
Summer 2026: I hosted Hung-Ting Chen for a project on efficient agentic search.
papers ▽
These are a few select papers. See my full list of papers or my google scholar page for a complete list.
puzzles ▽
I started writing puzzles around 2013, across PuzzlehuntCMU, Galactic Puzzle Hunt, Teammate Hunt, MIT Mystery Hunt, and the Microsoft Intern Game. These days, I am much less involved in puzzlehunt creation, although I still occasionally write puzzles.
This list contains a some puzzles that are approachable for beginners and some that I am proud of, along with a brief non-spoilery description and solution ("sol."). Many more of my puzzles are listed here. Some are also lost to time or poor archiving.
Puzzle |
Difficulty |
Description |
Sol. |