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Are Pre-Trained Convolutions Better Than Pre-Trained Transformers? (2021) (arxiv.org)
2 points by fzliu 242 days ago | hide | past | pdf | discuss on HN

In plain words: They pre-trained language models built from convolutions—the sliding-window filters usually used for images—and compared them with Transformers on 8 language tasks. The convolutional models matched or sometimes beat Transformers, showing that pre-training gains and architecture choice are separate questions.

Abstract · Are Pre-trained Convolutions Better than Pre-trained Transformers?

In the era of pre-trained language models, Transformers are the de facto choice of model architectures. While recent research has shown promise in entirely convolutional, or CNN, architectures, they have not been explored using the pre-train-fine-tune paradigm. In the context of language models, are convolutional models competitive to Transformers when pre-trained? This paper investigates this research question and presents several interesting findings. Across an extensive set of experiments on 8 datasets/tasks, we find that CNN-based pre-trained models are competitive and outperform their Transformer counterpart in certain scenarios, albeit with caveats. Overall, the findings outlined in this paper suggest that conflating pre-training and architectural advances is misguided and that both advances should be considered independently. We believe our research paves the way for a healthy amount of optimism in alternative architectures.

Yi Tay, Mostafa Dehghani, Jai Gupta, Dara Bahri, Vamsi Aribandi, Zhen Qin, Donald Metzler
arXiv:2105.03322 · cs.CL, cs.LG · submitted May 7, 2021 · updated Jan 30, 2022
abstract · pdf · html · ACL'21 + updated code/ckpt pointers

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