Extracting Financial Causality through QA: Insights from FinCausal 2025 Spanish Subtask

AbstractThe methodology tested both span extraction and generative tasks, with generative models ultimately proving to be more effective. SuperLenia, a private generative model, was the best-performing model. It is a combination of public models with sizes ranging from 7B to 8B parameters. SuperLenia was fine-tuned using QLoRA in a chat-based framework, and hyperparameter tuned during inference, including adjustments to temperature and sampling, further enhanced its performance.