José David Baena – Distributed Systems Engineer https://josedavidbaena.com Production notes and source-backed analysis on distributed systems, messaging infrastructure, open-source internals, and model engineering. en-us josedab@gmail.com (José David Baena) josedab@gmail.com (José David Baena) Wed, 01 Oct 2025 00:00:00 GMT https://josedavidbaena.com/blog/tiny-language-models/tiny-llm-fine-tuning-domain-adaptation Fine-Tuning Tiny Models: LoRA, QLoRA, and Domain Adaptation Strategies https://josedavidbaena.com/blog/tiny-language-models/tiny-llm-fine-tuning-domain-adaptation Domain accuracy 8% to 68%. Cost $23 instead of $15,000. LoRA trains 0.1% of params. QLoRA adds 4-bit quantization. Six hours: generalist to expert. Wed, 01 Oct 2025 00:00:00 GMT josedab@gmail.com (José David Baena) machine-learningfine-tuningloraqloradomain-adaptationtutorial