Yikai Lai

Machine learning engineer and computer science master's student

I build practical AI systems, especially around retrieval, graph learning, and knowledge tools.

I am currently studying at MSc Computer Science, City University of Hong Kong in Shenzhen, China. I like building AI systems that are useful, testable, and easier for people to navigate.

RAG systemsGraph learningKnowledge tools

At a glance

Who I am and what I do.

Who I am

A builder with one foot in research and one foot in product work.

What I do

RAG systems, graph-based modeling, evaluation workflows, and information tools.

What matters to me

Making useful systems that stay clear, testable, and grounded in real usage.

Main destinations

Go straight to the places that matter.

Blog

Writing about technology, learning, and how I think through problems.

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Notes

A working notebook of math, machine learning, systems ideas, and references.

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More about me

Open a subpage if you want the longer version.

Achievements

Selected projects, internship work, and academic milestones.

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Vision

How I think about useful AI systems and the kind of work I want to do.

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Contact

Ways to reach me and the best place to start a conversation.

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