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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

Preference alignment methods are increasingly critical for steering large language models (LLMs) to generate outputs consistent with human values. While recent approaches often rely on synthetic data generated by LLMs for scalability and…

计算与语言 · 计算机科学 2025-10-21 Mingye Zhu , Yi Liu , Zheren Fu , Yongdong Zhang , Zhendong Mao

In the last decade, motivated by the success of Deep Learning, the scientific community proposed several approaches to make the learning procedure of Neural Networks more effective. When focussing on the way in which the training data are…

机器学习 · 计算机科学 2021-06-22 Simone Marullo , Matteo Tiezzi , Marco Gori , Stefano Melacci

Supervised fine-tuning (SFT) is crucial for aligning Large Language Models (LLMs) with human instructions. The primary goal during SFT is to select a small yet representative subset of training data from the larger pool, such that…

计算与语言 · 计算机科学 2024-12-10 Tingyu Xia , Bowen Yu , Kai Dang , An Yang , Yuan Wu , Yuan Tian , Yi Chang , Junyang Lin

Re-initializing a neural network during training has been observed to improve generalization in recent works. Yet it is neither widely adopted in deep learning practice nor is it often used in state-of-the-art training protocols. This…

The paper proposes a novel regularization procedure for machine learning. The proposed high-order regularization (HR) provides new insight into regularization, which is widely used to train a neural network that can be utilized to…

机器学习 · 计算机科学 2025-05-14 Xinghua Liu , Ming Cao

Improving LLM performance on downstream tasks sometimes requires leveraging auxiliary datasets during post-training. In practice, however, developers face constraints on compute, labeling, and licensing costs that preclude using all…

机器学习 · 计算机科学 2026-05-19 Siqi Zeng , Christopher Jung , Rui Li , Zhe Kang , Ming Li , Nima Noorshams , Zhigang Wang , Fuchun Peng , Han Zhao , Xue Feng

Purpose: This work aims at developing a generalizable MRI reconstruction model in the meta-learning framework. The standard benchmarks in meta-learning are challenged by learning on diverse task distributions. The proposed network learns…

计算机视觉与模式识别 · 计算机科学 2021-10-05 Wanyu Bian , Yunmei Chen , Xiaojing Ye , Qingchao Zhang

Large language models (LLMs) are increasingly deployed as "agents" for decision-making (DM) in interactive and dynamic environments. Yet, since they were not originally designed for DM, recent studies show that LLMs can struggle even in…

人工智能 · 计算机科学 2025-11-07 Chanwoo Park , Ziyang Chen , Asuman Ozdaglar , Kaiqing Zhang

The growing disparity between the exponential scaling of computational resources and the finite growth of high-quality text data now constrains conventional scaling approaches for large language models (LLMs). To address this challenge, we…

Two major sources of training data exist for post-training modern language models: online (model-generated rollouts) data, and offline (human or other-model demonstrations) data. These two types of data are typically used by approaches like…

As LLMs occupy an increasingly important role in society, they are more and more confronted with questions that require them not only to draw on their general knowledge but also to align with certain human value systems. Therefore, studying…

计算与语言 · 计算机科学 2025-10-31 Mehar Bhatia , Shravan Nayak , Gaurav Kamath , Marius Mosbach , Karolina Stańczak , Vered Shwartz , Siva Reddy

The integration of LLMs into vulnerability detection (VD) has shifted the field toward more interpretable and context-aware analysis. While post-training techniques have shown promise in general coding tasks, their systematic application to…

密码学与安全 · 计算机科学 2026-05-05 Youpeng Li , Fuxun Yu , Xinda Wang

Recently, decomposing complex problems into simple subtasks--a crucial part of human-like natural planning--to solve the given problem has significantly boosted the performance of large language models (LLMs). However, leveraging such…

计算与语言 · 计算机科学 2025-07-11 Mihir Parmar , Palash Goyal , Xin Liu , Yiwen Song , Mingyang Ling , Chitta Baral , Hamid Palangi , Tomas Pfister

Large pre-trained models, such as Bert, GPT, and Wav2Vec, have demonstrated great potential for learning representations that are transferable to a wide variety of downstream tasks . It is difficult to obtain a large quantity of supervised…

计算与语言 · 计算机科学 2022-12-23 Neeraj Kumar , Ankur Narang , Brejesh Lall

This work focuses on leveraging and selecting from vast, unlabeled, open data to pre-fine-tune a pre-trained language model. The goal is to minimize the need for costly domain-specific data for subsequent fine-tuning while achieving desired…

In the Machine Learning research community, there is a consensus regarding the relationship between model complexity and the required amount of data and computation power. In real world applications, these computational requirements are not…

机器学习 · 计算机科学 2022-08-03 Joao Fonseca , Fernando Bacao

Post-training has become central to turning pretrained large language models (LLMs) into aligned, capable, and deployable systems. Recent progress spans supervised fine-tuning (SFT), preference optimization, reinforcement learning (RL),…

Improving generalization is one of the main challenges for training deep neural networks on classification tasks. In particular, a number of techniques have been proposed, aiming to boost the performance on unseen data: from standard data…

机器学习 · 计算机科学 2022-12-29 Enzo Tartaglione , Daniele Perlo , Marco Grangetto

Quality pretraining data is often seen as the key to high-performance language models. However, progress in understanding pretraining data has been slow due to the costly pretraining runs required for data selection experiments. We present…

计算与语言 · 计算机科学 2025-03-11 Tristan Thrush , Christopher Potts , Tatsunori Hashimoto