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Pre-trained language models (PLMs) have achieved impressive results on various natural language processing tasks. However, recent research has revealed that these models often rely on superficial features and shortcuts instead of developing…

计算与语言 · 计算机科学 2025-02-26 Zihao Li , Ruixiang Tang , Lu Cheng , Shuaiqiang Wang , Dawei Yin , Mengnan Du

Test-time scaling (TTS) for large language models (LLMs) has thus far fallen into two largely separate paradigms: (1) reinforcement learning (RL) methods that optimize sparse outcome-based rewards, yet suffer from instability and low sample…

Regularizing Deep Neural Networks (DNNs) is essential for improving generalizability and preventing overfitting. Fixed penalty methods, though common, lack adaptability and suffer from hyperparameter sensitivity. In this paper, we propose a…

机器学习 · 计算机科学 2023-10-26 Diogo Lavado , Cláudia Soares , Alessandra Micheletti

While biological intelligence grows organically as new knowledge is gathered throughout life, Artificial Neural Networks forget catastrophically whenever they face a changing training data distribution. Rehearsal-based Continual Learning…

Effective convolutional neural networks are trained on large sets of labeled data. However, creating large labeled datasets is a very costly and time-consuming task. Semi-supervised learning uses unlabeled data to train a model with higher…

计算机视觉与模式识别 · 计算机科学 2016-06-16 Mehdi Sajjadi , Mehran Javanmardi , Tolga Tasdizen

Prompt learning has emerged as an efficient alternative for fine-tuning foundational models, such as CLIP, for various downstream tasks. Conventionally trained using the task-specific objective, i.e., cross-entropy loss, prompts tend to…

计算机视觉与模式识别 · 计算机科学 2023-08-25 Muhammad Uzair Khattak , Syed Talal Wasim , Muzammal Naseer , Salman Khan , Ming-Hsuan Yang , Fahad Shahbaz Khan

Artificial neural network training with stochastic gradient descent can be destabilized by "bad batches" with high losses. This is often problematic for training with small batch sizes, high order loss functions or unstably high learning…

机器学习 · 计算机科学 2020-05-21 Jeffrey M. Ede , Richard Beanland

As Large Language Models (LLMs) expand in capability and application scope, their trustworthiness becomes critical. A vital risk is intrinsic deception, wherein models strategically mislead users to achieve their own objectives. Existing…

机器学习 · 计算机科学 2026-03-31 Guoxi Zhang , Jiawei Chen , Tianzhuo Yang , Lang Qin , Juntao Dai , Yaodong Yang , Jingwei Yi

Modern machine learning is trained by stochastic gradient descent (SGD), whose performance critically depends on how the learning rate (LR) is adjusted and decreased over time. Yet existing LR regimes may be intricate, or need to tune one…

机器学习 · 计算机科学 2025-08-20 Zhuang Yang

In the Bayesian reinforcement learning (RL) setting, a prior distribution over the unknown problem parameters -- the rewards and transitions -- is assumed, and a policy that optimizes the (posterior) expected return is sought. A common…

机器学习 · 计算机科学 2021-09-27 Aviv Tamar , Daniel Soudry , Ev Zisselman

Regularization for optimization is a crucial technique to avoid overfitting in machine learning. In order to obtain the best performance, we usually train a model by tuning the regularization parameters. It becomes costly, however, when a…

机器学习 · 计算机科学 2020-08-18 Jingfeng Wu , Vladimir Braverman , Lin F. Yang

The recent research in semi-supervised learning (SSL) is mostly dominated by consistency regularization based methods which achieve strong performance. However, they heavily rely on domain-specific data augmentations, which are not easy to…

机器学习 · 计算机科学 2021-04-20 Mamshad Nayeem Rizve , Kevin Duarte , Yogesh S Rawat , Mubarak Shah

Deep learning models fail on cross-domain challenges if the model is oversensitive to domain-specific attributes, e.g., lightning, background, camera angle, etc. To alleviate this problem, data augmentation coupled with consistency…

计算机视觉与模式识别 · 计算机科学 2023-09-26 Mengmeng Jing , Xiantong Zhen , Jingjing Li , Cees Snoek

With the adoption of retrieval-augmented generation (RAG), large language models (LLMs) are expected to ground their generation to the retrieved contexts. Yet, this is hindered by position bias of LLMs, failing to evenly attend to all…

计算与语言 · 计算机科学 2024-12-20 Youngwon Lee , Seung-won Hwang , Daniel Campos , Filip Graliński , Zhewei Yao , Yuxiong He

Contrastive self-supervised learning (CSL) with a prototypical regularization has been introduced in learning meaningful representations for downstream tasks that require strong semantic information. However, to optimize CSL with a loss…

计算机视觉与模式识别 · 计算机科学 2022-10-20 Shentong Mo , Zhun Sun , Chao Li

Recently, tensor data (or multidimensional array) have been generated in many modern applications, such as functional magnetic resonance imaging (fMRI) in neuroscience and videos in video analysis. Many efforts are made in recent years to…

机器学习 · 计算机科学 2023-08-10 Jiaqi Zhang , Yinghao Cai , Zhaoyang Wang , Beilun Wang

Neural abstractive summarization methods often require large quantities of labeled training data. However, labeling large amounts of summarization data is often prohibitive due to time, financial, and expertise constraints, which has…

计算与语言 · 计算机科学 2022-02-09 Junnan Liu , Qianren Mao , Bang Liu , Hao Peng , Hongdong Zhu , Jianxin Li

Deep discriminative models (DDMs), e.g. deep regression forests and deep decision forests, have been extensively studied recently to solve problems such as facial age estimation, head pose estimation, etc.. Due to a shortage of well-labeled…

计算机视觉与模式识别 · 计算机科学 2022-06-14 Lili Pan , Mingming Meng , Yazhou Ren , Yali Zheng , Zenglin Xu

Search advertising is essential for merchants to reach the target users on short video platforms. Short video ads aligned with user search intents are displayed through relevance matching and bid ranking mechanisms. This paper focuses on…

信息检索 · 计算机科学 2025-02-11 Guobing Gan , Kaiming Gao , Li Wang , Shen Jiang , Peng Jiang

Regularization is a core component of modern inverse problems, as it helps establish the well-posedness of the solution of interest. Popular regularization approaches include variational regularization and iterative regularization. The…

最优化与控制 · 数学 2025-08-08 Jie Gao , Cesare Molinari , Silvia Villa , Jingwei Liang