Papers by Wing-Lam Mok
SMoP: Towards Efficient and Effective Prompt Tuning with Sparse Mixture-of-Prompts (2023.emnlp-main)
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| Challenge: | Prompt tuning has emerged as a successful parameter-efficient alternative to the full fine-tuning of language models. |
| Approach: | They propose a prompt tuning method that utilizes short soft prompts for efficient training and inference while maintaining performance gains typically induced by longer soft prompt. |
| Outcome: | The proposed method outperforms baseline methods while preserving memory usage. |
Tutoring Helps Students Learn Better: Improving Knowledge Distillation for BERT with Tutor Network (2022.emnlp-main)
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| Challenge: | Existing knowledge distillation approaches for language models have overlooked the difficulty of training examples. |
| Approach: | They propose a framework that controls difficulty of training examples during pre-training by a tutor network. |
| Outcome: | The proposed framework outperforms state-of-the-art KD methods with student models on the GLUE benchmark. |
Client-Customized Adaptation for Parameter-Efficient Federated Learning (2023.findings-acl)
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| Challenge: | Pre-trained language models have a large memory footprint and are difficult to use in federated learning (FL) |
| Approach: | They propose a hypernetwork-based FL framework that generates client-specific adapters by conditioning the client information. |
| Outcome: | The proposed framework maximizes the utility of shared model parameters while minimizing divergence caused by client heterogeneity. |
Curriculum Debiasing: Toward Robust Parameter-Efficient Fine-Tuning Against Dataset Biases (2025.acl-long)
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| Challenge: | Parameter-efficient fine-tuning (PEFT) addresses the memory footprint issue of full fine- tuning by modifying only a subset of model parameters. |
| Approach: | They propose a framework that debiases models in a biased-to-unbiased order and uses only a subset of parameters to modify model parameters. |
| Outcome: | The proposed framework accelerates convergence on unbiased examples by approximately twofold and improves ID and OOD performance by 1.2% and 8.0%, respectively. |
Improving Bias Mitigation through Bias Experts in Natural Language Understanding (2023.emnlp-main)
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| Challenge: | Existing approaches to mitigate the detrimental effect of bias on the network include debiasing methods that down-weight the biased examples identified by an auxiliary model, which is trained with explicit bias labels. |
| Approach: | They propose a framework that introduces binary classifiers between the auxiliary model and main model, coined bias experts, to reduce the detrimental effect of bias on the network. |
| Outcome: | The proposed approach outperforms the state-of-the-art on various datasets while achieving high performance on in-distribution data. |