Browse practices

Good practice

Good practice ★ 80 Evidence: Observational / pre–post Compare

Food Inflation Nowcasting with Web-Scraped Prices — Narodowy Bank Polski's Big-Data Model for Real-Time CPI Estimates

Narodowy Bank Polski scrapes millions of online retail prices to nowcast food inflation ahead of official CPI releases. Peer-reviewed tests cut forecast …

Warsaw, Poland

Good practice ★ 60 Evidence: Descriptive / self-reported Compare

PLLuM in mObywatel — Poland's Sovereign-Language-Model AI Assistant for Public Services

A Polish academic-government consortium built PLLuM, a homegrown LLM, piloted in Częstochowa from August 2025 and rolled into the national mObywatel app …

Warsaw, Poland

Good practice ★ 53 Evidence: Observational / pre–post Compare

STIR — Poland's AI system for real-time VAT carousel-fraud detection

Poland's STIR applies ML to daily bank transactions of 4 million entities to detect VAT carousel fraud in near-real-time; STIR-attributable state savings …

Warsaw, Poland