Arthur Silva, Adriano Lima, George Valença, and George Cabral. 2025. Ad-hoc v.s LLM based System for Information Retrieval in Large Tabular Data: A Comparative Study in Public Medicine Procurement Audits. In Anais do XXI Simpósio Brasileiro de Sistemas de Informação, maio 19, 2025, Recife/PE, Brasil. SBC, Porto Alegre, Brasil, 751-758. DOI: https://doi.org/10.5753/sbsi.2025.246628.