Hi, I'm Tingzhu Bi 👋 tingzhu.io
I'm a CS PhD candidate at PKU. I study how complex systems evolve through time series and how AI can reason about them trustworthily: dynamic time series causality, accountable LLM investigative reasoning, and the time series modality support for LLM to comprehend temporal signals and their underlying mechanisms.
My recent work includes Nautil (arXiv 2610.03190), on learning when the evidence justifies closing a case; JustDiag! (arXiv 2606.19407), on explicit LLM MAS diagnostic justification; UnCLe (NeurIPS 2025), on dynamic temporal causal discovery; and FaultInsight (KDD 2024), on interpreting host faults with structured causal impact insights. I'm also currently exploring LLM-native time series comprehension.
Before focusing on research, I built projects spanning full-stack web development, C# desktop apps with Windows Forms and Mono, iOS/macOS apps with Swift and Objective-C, React Native apps, Go backends, MPI-based parallel computing, games with Cocos2D and Unity, data visualization with Core Graphics and Metal, themes for Markdown readers and blogs, databases, ML/NLP/RL in Python, data analytics, utilities, and more.
PKU CS PhD · Dynamic Time Series Causality · Accountable LLM Reasoning · LLM Time Series Comprehension
Open to research opportunities in industry and academia.
| Work | Publication | Focus and artifacts |
|---|---|---|
| 🧭 Nautil | arXiv 2610.03190 | Evidence-dependent investigation and case closure. Code · Demo · Data · SFT · RLVR |
| ⚖️ JustDiag! | arXiv 2606.19407 | A diagnostic justification engine that exposes evidence, alternatives, conflicts and unresolved questions. |
| 🧬 UnCLe | NeurIPS 2025 | Scalable dynamic causal discovery in nonlinear temporal systems. Code & datasets |
| 🔍 FaultInsight | KDD 2024 | Interpretable diagnosis of hyperscale data-center host faults. Code & sample data |
| 🧪 VECROsim | ISSRE 2022 | Configurable microservice fault simulation and metric-dataset generation. Code |
Go Microservice Backends and System Software: 🗄️ vecro-mongodb 2022.08, 🧱 vecro-base 2021.11, ⚙️ subr 2020.02, 🐺 MafiaStrike 2019.06
Swift, macOS, Parallel Computing, and Data Visualization: 🥧 PiSolver 2018.06, 🗺️ MapRouter 2018.06, 🌀 MandelTour 2018.05, 🔬 MandelAgent 2018.05
NLP, Reinforcement Learning, and Games: ✂️ segmisty 2021.04, 🎬 zilong-on-fire-renderer 2021.01, 🐉 zilong-on-fire 2020.12, 🏫 Neo70 2020.02
Data Analytics: 🛠️ 2019-ncov-data-util 2020.02
Databases: 🌊 recordflow 2018.06
Utilities: 🍎 apple-music-cover-scraper 2019.03, 🌬️ AQIbot 2018.09
Personal Sites: 🎓 tingzhu.io 2026.09, 🐯 etigerstudio-site 2018.06, 📝 feverfree-blog 2018.01
Themes and Plugins: 🎨 hexo-theme-feverfree 2018.06, 🌫️ typora-misty-theme 2019.01, 💬 hexo-tag-hint 2017.12