> Writing & Research — Vol. 0
Ideas, notes,
and explorations.
Field notes on RAG, multilingual OCR, agent systems, and the decisions behind production AI.
5 published notes · on duyle.me
- Note 012026-09-30Agentic AI changed what I have to prove before a question shipsAt Growtrics, the hard part was not making an agent produce more Q&A. It was deciding which answers deserved to exist, at what coverage and cost.
- Note 022026-04-18Why we re-trained the OCR backbone instead of fine-tuningFine-tuning looked faster on paper. The mistakes kept returning in exactly the places that mattered.
- Note 032026-03-02Shipping a Text-to-SQL agent that doesn't hallucinate column namesThe first version sounded brilliant right up until it invented a field that did not exist. Confidence is cheap when the schema is not watching.
- Note 042025-11-26From SmartPay to GMO: 18 months of AI engineering in VietnamEighteen months is not enough time to become wise. It is enough time to lose a few illusions about speed, certainty, and what good engineering feels like up close.
- Note 052025-09-14What 40% latency looks like when a bank is your customerLatency sounds abstract until someone on the customer call starts counting the seconds out loud. Then it becomes a feeling in your chest.
The full essays live on the original portfolio ↗.