Hybrid ML + LLM Property Valuation
A valuation system I designed and built end to end: point-in-time LightGBM models, a language-model pipeline that pulls auditable facts out of listing remarks, a registry of every historical model, and typed contracts that decide which tool answers which question, as of which date.
The extracted facts help most exactly where a structured schema is weakest: off-market homes, and the property types a tabular record describes worst. Fine-tuning handles tool routing and retrieval handles domain knowledge, kept apart. Every valuation names the model and training cutoff behind it, so leakage from the future shows up in the answer instead of hiding in it.