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Unsupervised neural combinatorial optimization (NCO) enables learning powerful solvers without access to ground-truth solutions. Existing approaches fall into two disjoint paradigms: models trained for generalization across instances, and…

Machine Learning · Computer Science 2026-04-28 Yiqiao Liao , Farinaz Koushanfar , Parinaz Naghizadeh

Model merging offers a scalable alternative to multi-task learning but often yields suboptimal performance on classification tasks. We attribute this degradation to a geometric misalignment between the merged encoder and static…

Machine Learning · Computer Science 2026-02-03 Fanshuang Kong , Richong Zhang , Zhijie Nie , Hang Zhou , Ziqiao Wang , Qiang Sun , Chunming Hu

In privacy-preserving mobile network transmission scenarios with heterogeneous client data, personalized federated learning methods that decouple feature extractors and classifiers have demonstrated notable advantages in enhancing learning…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Ming Yang , Dongrun Li , Xin Wang , Feng Li , Lisheng Fan , Chunxiao Wang , Xiaoming Wu , Peng Cheng

Federated learning (FL) provides a privacy-preserving solution for distributed machine learning tasks. One challenging problem that severely damages the performance of FL models is the co-occurrence of data heterogeneity and long-tail…

Machine Learning · Computer Science 2022-04-29 Xinyi Shang , Yang Lu , Gang Huang , Hanzi Wang

To transfer knowledge from seen attribute-object compositions to recognize unseen ones, recent compositional zero-shot learning (CZSL) methods mainly discuss the optimal classification branches to identify the elements, leading to the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Fengyuan Dai , Siteng Huang , Min Zhang , Biao Gong , Donglin Wang

The current privacy evaluation for speaker anonymization often overestimates privacy when a same-gender target selection algorithm (TSA) is used, although this TSA leaks the speaker's gender and should hence be more vulnerable. We…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-21 Carlos Franzreb , Arnab Das , Tim Polzehl , Sebastian Möller

This paper proposes an autoencoder (AE) that is used for improving the performance of once-class classifiers for the purpose of detecting anomalies. Traditional one-class classifiers (OCCs) perform poorly under certain conditions such as…

Machine Learning · Computer Science 2020-01-01 Kasra Babaei , ZhiYuan Chen , Tomas Maul

Semantic segmentation of histopathology images under class imbalance is typically addressed through frequency-based loss reweighting, which implicitly assumes that rare classes are difficult. However, true difficulty also arises from…

Image and Video Processing · Electrical Eng. & Systems 2026-04-16 Lakmali Nadeesha Kumari , Sen-Ching Samson Cheung

Low-rank adaptation (LoRA) has emerged as a leading parameter-efficient fine-tuning technique for adapting large foundation models, yet it often locks adapters into suboptimal minima near their initialization. This hampers model…

Machine Learning · Computer Science 2025-07-29 Zhan Zhuang , Xiequn Wang , Wei Li , Yulong Zhang , Qiushi Huang , Shuhao Chen , Xuehao Wang , Yanbin Wei , Yuhe Nie , Kede Ma , Yu Zhang , Ying Wei

Many real-world machine learning applications are characterized by a huge number of features, leading to computational and memory issues, as well as the risk of overfitting. Ideally, only relevant and non-redundant features should be…

Machine Learning · Computer Science 2023-06-21 Paolo Bonetti , Alberto Maria Metelli , Marcello Restelli

Unsupervised domain adaptive classifcation intends to improve the classifcation performance on unlabeled target domain. To alleviate the adverse effect of domain shift, many approaches align the source and target domains in the feature…

Computer Vision and Pattern Recognition · Computer Science 2021-10-27 Guoqiang Wei , Cuiling Lan , Wenjun Zeng , Zhizheng Zhang , Zhibo Chen

The adaptation of neural codes to the statistics of their environment is well captured by efficient coding approaches. Here we solve an inverse problem: characterizing the objective and constraint functions that efficient codes appear to be…

Neurons and Cognition · Quantitative Biology 2021-02-25 Luke Rast , Jan Drugowitsch

Learning from a few examples is a challenging task for machine learning. While recent progress has been made for this problem, most of the existing methods ignore the compositionality in visual concept representation (e.g. objects are built…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Ping Hu , Ximeng Sun , Kate Saenko , Stan Sclaroff

Federated Learning(FL) is popular as a privacy-preserving machine learning paradigm for generating a single model on decentralized data. However, statistical heterogeneity poses a significant challenge for FL. As a subfield of FL,…

Machine Learning · Computer Science 2024-10-22 Keting Yin , Jiayi Mao

This paper proposes a novel generic one-class feature learning method based on intra-class splitting. In one-class classification, feature learning is challenging, because only samples of one class are available during training. Hence,…

Machine Learning · Computer Science 2019-11-21 Patrick Schlachter , Yiwen Liao , Bin Yang

FDA has been promoting enrollment practices that could enhance the diversity of clinical trial populations, through broadening eligibility criteria. However, how to broaden eligibility remains a significant challenge. We propose an AI…

Computation and Language · Computer Science 2021-09-08 Xiong Liu , Cheng Shi , Uday Deore , Yingbo Wang , Myah Tran , Iya Khalil , Murthy Devarakonda

We propose a new method for training iterative collective classifiers for labeling nodes in network data. The iterative classification algorithm (ICA) is a canonical method for incorporating relational information into classification. Yet,…

Machine Learning · Computer Science 2017-03-21 Shuangfei Fan , Bert Huang

Test Time Adaptation (TTA) addresses the problem of distribution shift by adapting a pretrained model to a new domain during inference. When faced with challenging shifts, most methods collapse and perform worse than the original pretrained…

Machine Learning · Computer Science 2025-02-25 Sabyasachi Sahoo , Mostafa ElAraby , Jonas Ngnawe , Yann Pequignot , Frederic Precioso , Christian Gagne

Given a set of images containing objects from the same category, the task of image co-localization is to identify and localize each instance. This paper shows that this problem can be solved by a simple but intriguing idea, that is, a…

Computer Vision and Pattern Recognition · Computer Science 2016-07-26 Yao Li , Linqiao Liu , Chunhua Shen , Anton van den Hengel

Domain adaptation has become a prominent problem setting in machine learning and related fields. This review asks the question: how can a classifier learn from a source domain and generalize to a target domain? We present a categorization…

Machine Learning · Computer Science 2021-06-18 Wouter M. Kouw , Marco Loog