Brazilian Public Procurement Network

A heterogeneous graph benchmark for public procurement fraud detection, derived from Brazilian open government data. Dataset Statistics Total nodes 876,881 Total edges 1,834,933 Node types 6 Edge types 6 Temporal span 2021-2025 Node Types Suppliers: 18,788 legal entities contracting with government Agencies: 848 government bodies issuing contracts Procurements: 30,849 public bidding processes Contracts: 799,554 individual contracts Partners: 25,663 business owners (95.84% masked for privacy) CNAE codes: 1,179 industry classification codes Edge Types supplier → contract (signs) contract → procurement (belongs to) procurement → agency (issued by) partner → supplier (owns/manages) supplier → cnae (primary activity) supplier → cnae (secondary activities) Data Sources Integrated from official Brazilian government sources: PNCP - Portal Nacional de Contratações Públicas: https://pncp.gov.br Portal da Transparência - Sanction registries (CEIS, CNEP, CEAF, CEPIM): https://portaldatransparencia.gov.br Federal Revenue Service - Corporate registry with ownership structures Geographic scope: Santa Catarina state, Brazil (municipal sphere)