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Domain adaptation becomes more challenging with increasing gaps between source and target domains. Motivated from an empirical analysis on the reliability of labeled source data for the use of distancing target domains, we propose…

机器学习 · 计算机科学 2021-06-21 Yabin Zhang , Bin Deng , Kui Jia , Lei Zhang

Transfer-learning methods aim to improve performance in a data-scarce target domain using a model pretrained on a data-rich source domain. A cost-efficient strategy, linear probing, involves freezing the source model and training a new…

机器学习 · 计算机科学 2022-07-27 Utku Evci , Vincent Dumoulin , Hugo Larochelle , Michael C. Mozer

Source-free domain adaptation (SFDA) involves adapting a model originally trained using a labeled dataset ({\em source domain}) to perform effectively on an unlabeled dataset ({\em target domain}) without relying on any source data during…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Jing Wang , Wonho Bae , Jiahong Chen , Kuangen Zhang , Leonid Sigal , Clarence W. de Silva

Voice cloning is a difficult task which requires robust and informative features incorporated in a high quality TTS system in order to effectively copy an unseen speaker's voice. In our work, we utilize features learned in a self-supervised…

The rapid progress of Transformers in artificial intelligence has come at the cost of increased resource consumption and greenhouse gas emissions due to growing model sizes. Prior work suggests using pretrained small models to improve…

机器学习 · 计算机科学 2024-02-13 Yu Pan , Ye Yuan , Yichun Yin , Jiaxin Shi , Zenglin Xu , Ming Zhang , Lifeng Shang , Xin Jiang , Qun Liu

Unsupervised domain adaptation (UDA) aims to learn models for a target domain of unlabeled data by transferring knowledge from a labeled source domain. In the traditional UDA setting, labeled source data are assumed to be available for…

机器学习 · 计算机科学 2021-03-30 Haojian Zhang , Yabin Zhang , Kui Jia , Lei Zhang

Vertical Federated Learning (FL) is a new paradigm that enables users with non-overlapping attributes of the same data samples to jointly train a model without directly sharing the raw data. Nevertheless, recent works show that it's still…

机器学习 · 计算机科学 2022-10-05 Xiaochen Li , Yuke Hu , Weiran Liu , Hanwen Feng , Li Peng , Yuan Hong , Kui Ren , Zhan Qin

Recent studies show that the state-of-the-art deep neural networks are vulnerable to model inversion attacks, in which access to a model is abused to reconstruct private training data of any given target class. Existing attacks rely on…

机器学习 · 计算机科学 2022-03-04 Mostafa Kahla , Si Chen , Hoang Anh Just , Ruoxi Jia

Federated Learning (FL) is witnessing wider adoption due to its ability to benefit from large amounts of scattered data while preserving privacy. However, despite its advantages, federated learning suffers from several setbacks that…

机器学习 · 计算机科学 2026-03-31 Osama Wehbi , Sarhad Arisdakessian , Omar Abdel Wahab , Anderson Avila , Azzam Mourad , Hadi Otrok

Alignment is a crucial step to enhance the instruction-following and conversational abilities of language models. Despite many recent work proposing new algorithms, datasets, and training pipelines, there is a lack of comprehensive studies…

计算与语言 · 计算机科学 2024-10-04 Xiao Yu , Qingyang Wu , Yu Li , Zhou Yu

Low-Rank Adaptation (LoRA) has become one of the most widely used fine-tuning mechanisms for adapting large language models to new domains, tasks, and users. Yet adaptation performance alone can obscure an important failure mode: LoRA…

计算与语言 · 计算机科学 2026-05-29 Runze Xu , Arpit Garg , Hemanth Saratchandran , Simon Lucey

Unsupervised domain adaptation reduces the reliance on data annotation in deep learning by adapting knowledge from a source to a target domain. For privacy and efficiency concerns, source-free domain adaptation extends unsupervised domain…

机器学习 · 计算机科学 2022-12-19 Hao Yan , Yuhong Guo

Self-Supervised Learning (SSL) has emerged as a significant paradigm in representation learning thanks to its ability to learn without extensive labeled data, its strong generalization capabilities, and its potential for privacy…

密码学与安全 · 计算机科学 2026-03-04 Jiayao Wang , Mohammad Maruf Hasan , Yiping Zhang , Xiaoying Lei , Jiale Zhang , Qilin Wu , Junwu Zhu , Dongfang Zhao

Backpropagation (BP) is the cornerstone of today's deep learning algorithms, but it is inefficient partially because of backward locking, which means updating the weights of one layer locks the weight updates in the other layers.…

神经与进化计算 · 计算机科学 2021-02-10 Yu-Wei Kao , Hung-Hsuan Chen

Online black-box optimization (BBO) aims to optimize an objective function by iteratively querying a black-box oracle in a sample-efficient way. While prior studies focus on forward approaches such as Gaussian Processes (GPs) to learn a…

机器学习 · 计算机科学 2025-02-04 Dongxia Wu , Nikki Lijing Kuang , Ruijia Niu , Yi-An Ma , Rose Yu

Self-supervised learning (SSL) is able to build latent representations that generalize well to unseen data. However, only a few SSL techniques exist for the online CL setting, where data arrives in small minibatches, the model must comply…

机器学习 · 计算机科学 2025-07-16 Giacomo Cignoni , Andrea Cossu , Alexandra Gomez-Villa , Joost van de Weijer , Antonio Carta

This paper proposes an advantage estimation approach based on data augmentation for policy optimization. Unlike using data augmentation on the input to learn value and policy function as existing methods use, our method uses data…

机器学习 · 计算机科学 2022-10-17 Md Masudur Rahman , Yexiang Xue

The proliferation of open-weight Large Language Models (LLMs) has democratized agentic AI, yet fine-tuned weights are frequently shared and adopted with limited scrutiny beyond leaderboard performance. This creates a risk where third-party…

密码学与安全 · 计算机科学 2026-03-05 Bhanu Pallakonda , Mikkel Hindsbo , Sina Ehsani , Prag Mishra

We introduce a bootstrapping approach to train long-context language models by exploiting their short-context capabilities only. Our method utilizes a simple agent workflow to synthesize diverse long-context instruction tuning data, thereby…

计算与语言 · 计算机科学 2025-03-20 Liang Wang , Nan Yang , Xingxing Zhang , Xiaolong Huang , Furu Wei

Fine-tuning large language models on private data for downstream applications poses significant privacy risks in potentially exposing sensitive information. Several popular community platforms now offer convenient distribution of a large…

机器学习 · 计算机科学 2024-09-02 Md Rafi Ur Rashid , Jing Liu , Toshiaki Koike-Akino , Shagufta Mehnaz , Ye Wang