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Blog

Writing

Build logs, deep dives, and the occasional hot take on AI, data, and shipping real products.
RAG

Building HKLawyer.ai: hybrid-search RAG over 20 years of case law

How dense retrieval, BM25, and an LLM-as-a-judge benchmark turned two decades of Hong Kong judgments into a bilingual legal assistant that cites real cases.

  • RAG
  • LLM
  • Evaluation
  • +1
3 min read
PyTorch

Deepstory: GPT-2, DCTTS, and talking Witcher characters

A look back at chaining three deep learning models (text generation, speech synthesis, and facial animation) into one storytelling app.

  • PyTorch
  • GPT-2
  • Speech Synthesis
  • +1
3 min read
Career

From New Media to data science

I studied New Media at CityU's School of Creative Media. Here's how that led to data science and AI products, and why a creative media background still shapes how I build.

  • Career
  • Data Science
  • Design
3 min read

Archive

The Deepstory dev log

In 2020 I wrote 30 posts while building Deepstory for my New Media graduation: scraping Witcher voice lines, training GPT-2 and DCTTS, fighting memory leaks, and finally shipping a Colab demo. It still lives on its own site.