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arXiv · 2105.08445

DRILL: Dynamic Representations for Imbalanced Lifelong Learning

Kyra Ahrens·Fares Abawi·Stefan Wermter
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Abstract

Continual or lifelong learning has been a long-standing challenge in machine learning to date, especially in natural language processing (NLP). Although state-of-the-art language models such as BERT have ushered in a new era in this field due to their outstanding performance in multitask learning scenarios, they suffer from forgetting when being exposed to a continuous stream of data with shifting data distributions. In this paper, we introduce DRILL, a novel continual learning architecture for open-domain text classification. DRILL leverages a biologically inspired self-organizing neural architecture to selectively gate latent language representations from BERT in a task-incremental manner. We demonstrate in our experiments that DRILL outperforms current methods in a realistic scenario of imbalanced, non-stationary data without prior knowledge about task boundaries. To the best of our knowledge, DRILL is the first of its kind to use a self-organizing neural architecture for open-domain lifelong learning in NLP.

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Kyra Ahrens, Fares Abawi, Stefan Wermter. 2021-09-20. DRILL: Dynamic Representations for Imbalanced Lifelong Learning. https://doi.org/10.1007/978-3-030-86340-1_33

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