SEUPD@CLEF: Team BASETTE at LongEval: IR System for Basic Hardware

This report describes the system developed by Team BASETTE for the CLEF 2025 LongEval Lab, Task 1 - Web Retrieval. Our main priority was optimizing performance on limited and commonly available hardware, deliberately avoiding the use of GPUs or other specialized computational resources. The system relies on classical Information Retrieval techniques, and is designed to run both indexing and retrieval in a multithreaded fashion to ensure high execution speed. During development, we explored various strategies, some of which were discarded not only due to limited effectiveness, but also because their processing time was not compatible with our efficiency constraints.