Lin Jia
Senior Data Scientist & Craft Lead — experimentation, causal inference, ML & GenAI evaluation
Welcome to my personal website!
I am a Senior Data Scientist and Craft Lead at Booking.com with 9+ years of experience. My work sits at the intersection of statistical inference, causal inference (experimentation + observational), machine learning, and GenAI evaluation, with a focus on enabling trustworthy, decision-ready decisions under real-world constraints.
I lead initiatives that combine statistical rigor with strategic impact—from developing a company-wide Causal Inference Framework to advancing sequential testing, causal ML, and LLM-powered experimentation intelligence for robust measurement and decision support.
Inference & Intelligence Lab
Inference & Intelligence Lab is my home for building trustworthy, decision-ready thinking across statistical inference, causal inference, machine learning, and GenAI evaluation. It has two complementary series:
Causal Inference From the Ground Up builds the foundations —clarifying core concepts such as identification and key assumptions for different causal approaches and developing a rigorous step by step model to address any causal questions.
Inference in the Wild focuses on what happens in real work: messy data, imperfect experiments, evaluation pitfalls, and practical playbooks that help analyses and ML/GenAI systems hold up under real-world constraints.