| Challenge: | Existing methods to adapt Pre-trained Language Models to downstream tasks are limited by their inference APIs. |
| Approach: | They propose a multi-prompting decoding framework that query PLMs with multiple prompts . they propose to query Plms with optimal transport for hidden states and calibrated decoding for class scores . |
| Outcome: | The proposed framework achieves state-of-the-art results on multiple natural language understanding datasets under the few-shot setting. |
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Decoder Tuning: Efficient Language Understanding as Decoding (2023.acl-long)
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| Challenge: | Existing approaches to adapt pre-trained models with parameters frozen are based on input-side adaptation, which requires thousands of API queries. |
| Approach: | They propose to train a model-as-a-service (MaaS) setting to provide only the inference APIs for users . they argue that input-side adaptation could be arduous due to the lack of gradient signals . |
| Outcome: | The proposed model outperforms state-of-the-art algorithms with a 200x speed-up. |
MSP: Multi-Stage Prompting for Making Pre-trained Language Models Better Translators (2022.acl-long)
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| Challenge: | Prompting has been shown to be a promising approach for applying pre-trained language models to perform downstream tasks. |
| Approach: | They propose a method that divides the translation process into three stages using pre-trained language models. |
| Outcome: | The proposed method significantly improves translation performance of pre-trained language models on three translation tasks. |
Improving Minimum Bayes Risk Decoding with Multi-Prompt (2024.emnlp-main)
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| Challenge: | Existing methods to generate LLMs with a single ‘best’ prompt are unstable and sub-optimal in practice. |
| Approach: | They propose to decode multiple candidate generations from a prompt bank at inference-time and use Minimum Bayes Risk (MBR) to select a final output. |
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M-Ped: Multi-Prompt Ensemble Decoding for Large Language Models (2025.findings-emnlp)
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Jiaxin Guo, Daimeng Wei, Yuanchang Luo, Hengchao Shang, Zongyao Li, Jinlong Yang, Zhanglin Wu, Zhiqiang Rao, Shimin Tao, Hao Yang
| Challenge: | a new ensemble decoding approach enhances the performance of Large Language Models. |
| Approach: | They propose a multi-prompt ensemble decoding approach to enhance LLM performance . they submit n variations of prompts with X to LLMs in batch mode to decode and derive probability distributions . |
| Outcome: | The proposed method improves pass@k rates, LENS metrics and BLEU scores on diverse NLP tasks. |
PPT: Pre-trained Prompt Tuning for Few-shot Learning (2022.acl-long)
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| Challenge: | Prompt tuning for pre-trained language models has shown remarkable performance . however, prompt tuning is still not fully explored . |
| Approach: | They propose to pre-train prompts by adding soft prompts into the pre-training stage to obtain a better initialization. |
| Outcome: | The proposed framework outperforms full-model tuning under full-data and few-shot learning settings. |
Knowledge Prompting in Pre-trained Language Model for Natural Language Understanding (2022.emnlp-main)
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| Challenge: | Existing knowledge-enhanced pre-trained language models (PLMs) introduce redundant factual knowledge from knowledge bases and require complex modules. |
| Approach: | They propose a knowledge prompting-based PLM framework that incorporates factual knowledge into PLMs. |
| Outcome: | The proposed framework can be flexibly combined with existing mainstream PLMs. |
Towards Unified Prompt Tuning for Few-shot Text Classification (2022.findings-emnlp)
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Jianing Wang, Chengyu Wang, Fuli Luo, Chuanqi Tan, Minghui Qiu, Fei Yang, Qiuhui Shi, Songfang Huang, Ming Gao
| Challenge: | Prompt-based fine-tuning has boosted performance of Pre-trained Language Models (PLMs) on few-shot text classification, but PLMs are unfamiliar with prompt-style expressions during pre-training, which limits the few- shot learning performance on downstream tasks. |
| Approach: | They propose a framework for prompt-based fine-tuning that captures prompting semantics from non-target NLP datasets and propose 'Prompt-Options-Verbalizer' for joint prompt learning across different NLP tasks. |
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DeMPT: Decoding-enhanced Multi-phase Prompt Tuning for Making LLMs Be Better Context-aware Translators (2024.emnlp-main)
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| Challenge: | Concatenating large language models are adapted to context-aware neural machine translation in a concatenated way . a recent paradigm shift has been witnessed in discourse-related challenges such as zero pronoun translation . |
| Approach: | They propose an alternative adaptation approach to make large language models discriminately model and utilize inter- and intra-sentence contexts. |
| Outcome: | The proposed approach outperforms concatenation mode and improves performance in discourse modeling. |
Iteratively Prompt Pre-trained Language Models for Chain of Thought (2022.emnlp-main)
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| Challenge: | Pre-trained language models (PLMs) internalize a great amount of knowledge, but have been shown incapable of recalling this knowledge to solve complex & multi-step reasoning tasks. |
| Approach: | They propose an iterative prompting framework which progressively elicits relevant knowledge from PLMs for multi-step inference. |
| Outcome: | The proposed prompting framework outperforms existing prompting methods on three datasets involving multi-step reasoning. |
PrAd: Prompt Adaptive Tuning for Decoder-only Language Models (2025.findings-emnlp)
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| Challenge: | Prompt-based methods suffer from increased input lengths and sensitivity to weight initialization . adapter-based approaches can substantially increase inference time . |
| Approach: | a new paradigm for prompt-based tuning addresses the problem of fine tuning pretrained models . prompt--based methods suffer from increased input lengths and sensitivity to weight initialization . a prompt-oriented approach employs adapters for flexible input transformation . |
| Outcome: | a proposed framework can achieve comparable or better performance and higher inference efficiency even in multi-task scenarios. |