Nisal Fonseka

AI engineer’s lab

A working shelf for experiments that are useful enough to share but not yet case studies.

01Active

RAG experiments

Retrieval quality, chunking, hybrid search and grounded answer behavior.

02Active

LLM evaluation

Small evaluation sets and failure analysis for application-specific behavior.

03Ongoing

Model comparisons

Capability, latency and cost comparisons tied to defined product tasks.

04Exploring

Voice AI

Interaction patterns and system boundaries for useful real-time voice experiences.

05Research

Sinhala NLP

Fine-tuning, correction and evaluation for underrepresented language workflows.

06Ongoing

Prompt systems

Versioned prompts, structured output and regression-aware iteration.