About
I’m Ricardo Ledan — an AI systems engineer and independent researcher building tools for archives, research, and personal knowledge infrastructure.
I run studio1804, an AI systems practice, and created rasin.ai, a source-grounded platform for Haitian historical research. Rasin grows out of a broader question: how should technical systems represent knowledge when evidence is incomplete, multilingual, politically shaped, and contested?
My work focuses on the systems layer of AI. In practice, I build retrieval pipelines, knowledge graphs, agentic research workflows, and self-hosted infrastructure for working with complex collections — with particular attention to provenance, uncertainty, and trust.
Currently reading
- What Is Intelligence? by Blaise Agüera y Arcas — on intelligence as prediction across biological and artificial systems.
- Machine Decision Is Not Final, edited by Benjamin H. Bratton et al. — on Chinese histories and futures of AI, beyond the Silicon Valley frame.
- Build a Large Language Model (From Scratch) by Sebastian Raschka — a technical walkthrough of the model stack from tokenization through fine-tuning.