Challenge: a new multi-task, parameter-efficient language model tuning method learns to transfer knowledge across different tasks via a mixture of soft prompts.
Approach: They propose a multi-task, parameter-efficient language model tuning method that uses soft prompts to learn to transfer knowledge across different tasks.
Outcome: The proposed method outperforms prompt tuning and outperfies or matches fully fine-tuned tuning approaches that use 10 times more parameters.

Similar Papers

Bayesian Multi-Task Transfer Learning for Soft Prompt Tuning (2023.findings-emnlp)

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Challenge: Large-scale pre-trained language models have been fine-tuned for various NLP tasks . prompt tuning is a method that optimizes the output of the model to adapt to downstream tasks based on the posterior distribution of the source task.
Approach: They propose a Bayesian approach to prompt tuning that optimizes for adapting pre-trained language models to downstream tasks rather than fine-tuning full model parameters.
Outcome: The proposed approach outperforms the state-of-the-art methods on benchmark NLP tasks.
The Power of Scale for Parameter-Efficient Prompt Tuning (2021.emnlp-main)

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Challenge: Unlike discrete text prompts used by GPT-3, soft prompts are learned through backpropagation and can be tuned to incorporate signals from any number of labeled examples.
Approach: They propose a mechanism for learning "soft prompts" to condition frozen language models to perform specific downstream tasks.
Outcome: The proposed method outperforms fewshot learning using GPT-3 and matches the quality of model tuning as models exceed billions of parameters.
Parameter Efficient Multi-task Fine-tuning by Learning to Transfer Token-wise Prompts (2023.findings-emnlp)

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Challenge: Prompt tuning has been proven to be successful on various tasks by incorporating a small number of trainable parameters while freezing large pre-trained language models.
Approach: They propose a token-wise prompt tuning method that uses a bank of finer-grained soft prompt tokens to generate an instance-dependent prompt.
Outcome: The proposed method performs far better than full parameter fine-tuned models and achieves state-of-the-art by tuning only 0.035% parameters on 14 datasets.
Leveraging Self-Attention for Input-Dependent Soft Prompting in LLMs (2025.acl-short)

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Challenge: Large language models require fine-tuning, which is computationally expensive and challenging.
Approach: They propose a method that generates soft prompts based on input tokens and attends different tokens with varying importance.
Outcome: The proposed method is simple and efficient, keeping the number of trainable parameters small.
Learning How to Ask: Querying LMs with Mixtures of Soft Prompts (2021.naacl-main)

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Challenge: Pretrained language models retain factual knowledge that can be extracted with a sentential prompt.
Approach: They propose to learn prompts by gradient descent, either fine-tuning prompts or starting from random initialization.
Outcome: The proposed approach outperforms existing methods on English LMs and tasks.
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.
On Transferability of Prompt Tuning for Natural Language Processing (2022.naacl-main)

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Challenge: Pre-trained language models (PLMs) can achieve comparable performance to full-parameter fine-tuning by tuning a few soft prompts, but require much more training time than fine-timing.
Approach: They empirically investigate the transferability of soft prompts across different downstream tasks and PLMs to determine what decides prompt transferability.
Outcome: The proposed method can achieve comparable performance to full-parameter fine-tuning by tuning a few soft prompts, but requires much more training time than fine-timing.
Hit the Nail on the Head: Parameter-Efficient Multi-task Tuning via Human Language Intervention (2024.findings-emnlp)

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Challenge: Recent studies show that PEFT on small pre-trained language models improves multitasking capabilities.
Approach: They propose a multi-task learning framework that enables transfer of prior knowledge across tasks . they attach task descriptions to input samples and map them to task embeddings .
Outcome: The proposed method improves performance on a T5 model and in decoder-only models .
APrompt: Attention Prompt Tuning for Efficient Adaptation of Pre-trained Language Models (2023.emnlp-main)

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Challenge: Existing prompt tuning methods only introduce prompts at the input layer, limiting performance and leaving large room for improvement.
Approach: They propose a method that involves tuning a small set of soft prompts for pre-trained language models.
Outcome: The proposed method outperforms state-of-the-art methods with pre-trained models on the SuperGLUE benchmark.
Parameter-Efficient Prompt Tuning Makes Generalized and Calibrated Neural Text Retrievers (2023.findings-emnlp)

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Challenge: Prompt tuning is a technique that updates few parameters in pre-trained models for language understanding and generation tasks.
Approach: They propose to leverage prompt tuning for neural text retrieval to improve generalization and cross-domain generalization.
Outcome: The proposed approach can mitigate the two issues faced by fine-tuning retrieval methods and improve the out-of-domain zero-shot generalization of the retrieval models.

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