Cross-functional Analysis of Generalisation in Behavioural Learning ...

• Main Authors: de Araujo, Pedro Henrique Luz, Roth, Benjamin
• Format: Text
• Language: unknown
• Published: arXiv 2023
• Subjects: Computation and Language cs.CL; Machine Learning cs.LG; FOS Computer and information sciences; Beluga; Beluga*
• Online Access: https://dx.doi.org/10.48550/arxiv.2305.12951; https://arxiv.org/abs/2305.12951

In behavioural testing, system functionalities underrepresented in the standard evaluation setting (with a held-out test set) are validated through controlled input-output pairs. Optimising performance on the behavioural tests during training (behavioural learning) would improve coverage of phenomena not sufficiently represented in the i.i.d. data and could lead to seemingly more robust models. However, there is the risk that the model narrowly captures spurious correlations from the behavioural test suite, leading to overestimation and misrepresentation of model performance -- one of the original pitfalls of traditional evaluation. In this work, we introduce BeLUGA, an analysis method for evaluating behavioural learning considering generalisation across dimensions of different granularity levels. We optimise behaviour-specific loss functions and evaluate models on several partitions of the behavioural test suite controlled to leave out specific phenomena. An aggregate score measures generalisation to unseen ... : 16 pages, 1 figure. To be published in the Transactions of the Association for Computational Linguistics (TACL). This preprint is a pre-MIT Press publication version ...