Scientific Research

Articles, reports and technical papers produced by Lab Livre. Our results are open and available for everyone to read and download.

November 2025

Semantic Clustering of Civic Proposals: A Case Study on Brazil's National Participation Platform

Ronivaldo Ferreira, Guilherme da Silva, Carla Rocha, Gustavo Pinto

Combines BERTopic, seed words and LLM-based validation to organize Brasil Participativo proposals into coherent topics aligned with the official taxonomy, with minimal human effort.

May 2026 Master's thesis (PPGI/UnB)

Practical Adoption: Lessons Learned Building ML-Enabled Systems

Guilherme Daniel Fernandes da Silva

Multiple-case study of Brasil Participativo and AdsRay on the challenges of taking ML to production for the first time with limited resources, and the minimal set of practices that makes it possible.

July 2026 Electric Power Systems Research

Proposal for a performance evaluation method for grid-connected photovoltaic systems based on machine learning forecasting models

Flávio V. Leão, Renato C. Sampaio, Loana N. Velasco, Alex Reis, Ênio C. Resende, Luiz C. G. Freitas

Evaluates and compares daily generation forecast models for photovoltaic plants at UnB and proposes an anomaly detector based on the Energy Performance Index (IEC TS 61724-3).