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PAC-Bayesian is an analysis framework where the training error can be expressed as the weighted average of the hypotheses in the posterior distribution whilst incorporating the prior knowledge. In addition to being a pure generalization…

机器学习 · 计算机科学 2022-02-07 Wei Huang , Chunrui Liu , Yilan Chen , Tianyu Liu , Richard Yi Da Xu

Prompt Learning has recently gained great popularity in bridging the gap between pretraining tasks and various downstream tasks. It freezes Pretrained Language Models (PLMs) and only tunes a few task-related parameters (prompts) for…

计算与语言 · 计算机科学 2022-06-07 Yuezihan Jiang , Hao Yang , Junyang Lin , Hanyu Zhao , An Yang , Chang Zhou , Hongxia Yang , Zhi Yang , Bin Cui

The reusability of state-of-the-art Pre-trained Language Models (PLMs) is often limited by their generalization problem, where their performance drastically decreases when evaluated on examples that differ from the training dataset, known…

计算与语言 · 计算机科学 2023-08-09 Somayeh Ghanbarzadeh , Hamid Palangi , Yan Huang , Radames Cruz Moreno , Hamed Khanpour

Pre-trained language models (PLMs) are known to be overly parameterized and have significant redundancy, indicating a small degree of freedom of the PLMs. Motivated by the observation, in this paper, we study the problem of…

计算与语言 · 计算机科学 2023-08-02 Zhong Zhang , Bang Liu , Junming Shao

Adopting a two-stage paradigm of pretraining followed by fine-tuning, Pretrained Language Models (PLMs) have achieved substantial advancements in the field of natural language processing. However, in real-world scenarios, data labels are…

计算与语言 · 计算机科学 2023-11-03 Song Wang , Zhen Tan , Ruocheng Guo , Jundong Li

Pretrained Language Models (PLMs) have advanced Natural Language Processing (NLP) tasks significantly, but finetuning PLMs on low-resource datasets poses significant challenges such as instability and overfitting. Previous methods tackle…

计算与语言 · 计算机科学 2024-03-20 Sai Ashish Somayajula , Youwei Liang , Abhishek Singh , Li Zhang , Pengtao Xie

Recent advances in pre-trained language models (PLMs) have demonstrated their capabilities in capturing universal knowledge, making them promising for radar signal processing applications. Nevertheless, directly fine-tuning PLMs on radar…

信号处理 · 电气工程与系统科学 2026-05-01 Qiying Hu , Yaowen Li , Shengyi Zhang , Chuan Huang , Yu Liu , You He

As search depth increases in autonomous reasoning and embodied planning, candidate action spaces expand exponentially, often exhausting computational budgets. While heuristic pruning is a critical countermeasure, existing approaches lack…

机器学习 · 计算机科学 2026-05-12 Tianhao Qian

Large language models (LLMs) remain vulnerable to misalignment and jailbreaks, making external safeguards like moderation filters essential, yet existing filters often focus narrowly on safety, falling short of the broader alignment needs…

计算与语言 · 计算机科学 2026-01-08 Masoomali Fatehkia , Enes Altinisik , Mohamed Osman , Husrev Taha Sencar

The meanings of words and phrases depend not only on where they are used (contexts) but also on who use them (writers). Pretrained language models (PLMs) are powerful tools for capturing context, but they are typically pretrained and…

计算与语言 · 计算机科学 2023-09-15 Daisuke Oba , Naoki Yoshinaga , Masashi Toyoda

Recent pretrained language models extend from millions to billions of parameters. Thus the need to fine-tune an extremely large pretrained model with a limited training corpus arises in various downstream tasks. In this paper, we propose a…

计算与语言 · 计算机科学 2021-09-14 Runxin Xu , Fuli Luo , Zhiyuan Zhang , Chuanqi Tan , Baobao Chang , Songfang Huang , Fei Huang

Pre-trained language models (PLMs) are engineered to be robust in contextual understanding and exhibit outstanding performance in various natural language processing tasks. However, their considerable size incurs significant computational…

计算与语言 · 计算机科学 2024-08-21 Guanchen Li , Xiandong Zhao , Lian Liu , Zeping Li , Dong Li , Lu Tian , Jie He , Ashish Sirasao , Emad Barsoum

With the continuous growth in the number of parameters of transformer-based pretrained language models (PLMs), particularly the emergence of large language models (LLMs) with billions of parameters, many natural language processing (NLP)…

计算与语言 · 计算机科学 2023-12-20 Lingling Xu , Haoran Xie , Si-Zhao Joe Qin , Xiaohui Tao , Fu Lee Wang

Pre-trained language models (PLMs) have become a prevalent technique in deep learning for code, utilizing a two-stage pre-training and fine-tuning procedure to acquire general knowledge about code and specialize in a variety of downstream…

软件工程 · 计算机科学 2024-01-05 Martin Weyssow , Xin Zhou , Kisub Kim , David Lo , Houari Sahraoui

Adapter-based tuning has recently arisen as an alternative to fine-tuning. It works by adding light-weight adapter modules to a pretrained language model (PrLM) and only updating the parameters of adapter modules when learning on a…

计算与语言 · 计算机科学 2021-06-08 Ruidan He , Linlin Liu , Hai Ye , Qingyu Tan , Bosheng Ding , Liying Cheng , Jia-Wei Low , Lidong Bing , Luo Si

When adapting large language models (LLMs) to a specific downstream task, two primary approaches are commonly employed: (1) prompt engineering, often with in-context few-shot learning, leveraging the model's inherent generalization…

机器学习 · 计算机科学 2025-12-24 Jorg Bornschein , Clare Lyle , Yazhe Li , Amal Rannen-Triki , Xu Owen He , Razvan Pascanu

Pretrained language models (PLMs) trained on large-scale unlabeled corpus are typically fine-tuned on task-specific downstream datasets, which have produced state-of-the-art results on various NLP tasks. However, the data discrepancy issue…

计算与语言 · 计算机科学 2022-03-23 Jiali Zeng , Yufan Jiang , Shuangzhi Wu , Yongjing Yin , Mu Li

Fine-tuning and inference with large Language Models (LM) are generally known to be expensive. Parameter-efficient fine-tuning over pretrained LMs reduces training memory by updating a small number of LM parameters but does not improve…

计算与语言 · 计算机科学 2024-06-05 Bowen Zhao , Hannaneh Hajishirzi , Qingqing Cao

We study the problem of fine-tuning a language model (LM) for a target task by optimally using the information from $n$ auxiliary tasks. This problem has broad applications in NLP, such as targeted instruction tuning and data selection in…

计算与语言 · 计算机科学 2025-06-03 Dongyue Li , Ziniu Zhang , Lu Wang , Hongyang R. Zhang

The rapid increase in the parameter counts of Large Language Models (LLMs), which often reach into the billions or even trillions, presents significant challenges for their practical deployment, particularly in resource-constrained…

机器学习 · 计算机科学 2025-11-18 Yi Cao , Wei-Jie Xu , Yucheng Shen , Weijie Shi , Chi-Min Chan , Jianfeng Qu , Jiajie Xu