Papers by Francesco Tonolini
Rethinking Semi-supervised Learning with Language Models (2023.findings-acl)
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| Challenge: | Semi-supervised learning (SSL) is a popular setting to make use of unlabelled data . Currently, there are two popular approaches to make effective use of the unlabelled datasets . |
| Approach: | They compare semi-supervised learning (SSL) and task-adaptive pre-training (TAPT) they find TAPT is a stronger and more robust SSL learner, even when using just a few hundred unlabelled samples . |
| Outcome: | The proposed methods improve model performance across different NLP tasks and data sizes. |
Bayesian Prompt Ensembles: Model Uncertainty Estimation for Black-Box Large Language Models (2024.findings-acl)
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| Challenge: | Existing approaches to quantify uncertainty of pre-trained large language models require specific architectures or retraining strategies. |
| Approach: | They propose a Bayesian Prompts Ensemble approach to accurately quantify LLM uncertainty . they compute output probabilities through a weighted ensemble of different task instruction prompts . |
| Outcome: | The proposed approach achieves significantly superior calibration over baselines over a range of natural language classification tasks. |