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Recently, deep learning models have achieved great success in computer vision applications, relying on large-scale class-balanced datasets. However, imbalanced class distributions still limit the wide applicability of these models due to…

计算机视觉与模式识别 · 计算机科学 2021-08-05 Yechan Kim , Younkwan Lee , Moongu Jeon

Cacioli (2026) showed that the K-way energy probe on standard discriminative predictive coding networks reduces approximately to a monotone function of the log-softmax margin. The reduction rests on five assumptions, including cross-entropy…

计算与语言 · 计算机科学 2026-04-24 Jon-Paul Cacioli

Neural networks have dramatically increased our capacity to learn from large, high-dimensional datasets across innumerable disciplines. However, their decisions are not easily interpretable, their computational costs are high, and building…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Mackenzie J. Meni , Ryan T. White , Michael Mayo , Kevin Pilkiewicz

Deep learning models achieve state-of-the-art performance across domains but face scalability challenges in real-time or resource-constrained scenarios. To address this, we propose Loss Trajectory Correlation (LTC), a novel metric for…

机器学习 · 计算机科学 2025-03-14 Manish Nagaraj , Deepak Ravikumar , Efstathia Soufleri , Kaushik Roy

In the face of dataset shift, model calibration plays a pivotal role in ensuring the reliability of machine learning systems. Calibration error (CE) is an indicator of the alignment between the predicted probabilities and the classifier…

机器学习 · 计算机科学 2023-12-15 Teodora Popordanoska , Gorjan Radevski , Tinne Tuytelaars , Matthew B. Blaschko

Real-world applications of machine learning tools in high-stakes domains are often regulated to be fair, in the sense that the predicted target should satisfy some quantitative notion of parity with respect to a protected attribute.…

机器学习 · 计算机科学 2022-02-07 Han Zhao , Geoffrey J. Gordon

Contrastive learning applied to self-supervised representation learning has seen a resurgence in recent years, leading to state of the art performance in the unsupervised training of deep image models. Modern batch contrastive approaches…

In the realm of recommender systems (RS), Top-$K$ ranking metrics such as NDCG@$K$ are the gold standard for evaluating recommendation performance. However, during the training of recommendation models, optimizing NDCG@$K$ poses significant…

信息检索 · 计算机科学 2025-08-11 Weiqin Yang , Jiawei Chen , Shengjia Zhang , Peng Wu , Yuegang Sun , Yan Feng , Chun Chen , Can Wang

Recent advances in electronics are enabling substantial processing to be performed at each node (robots, sensors) of a networked system. Local processing enables data compression and may mitigate measurement noise, but it is still slower…

最优化与控制 · 数学 2025-03-04 Luca Ballotta , Luca Schenato , Luca Carlone

Instruction tuning has underscored the significant potential of large language models (LLMs) in producing more human controllable and effective outputs in various domains. In this work, we focus on the data selection problem for…

机器学习 · 计算机科学 2025-09-01 Yang Wu , Huayi Zhang , Yizheng Jiao , Lin Ma , Xiaozhong Liu , Jinhong Yu , Dongyu Zhang , Dezhi Yu , Wei Xu

While significant progress has been made in specifying neural networks capable of representing uncertainty, deep networks still often suffer from overconfidence and misaligned predictive distributions. Existing approaches for measuring this…

机器学习 · 计算机科学 2025-10-24 Spencer Young , Riley Sinema , Cole Edgren , Andrew Hall , Nathan Dong , Porter Jenkins

Achieving backward compatibility when rolling out new models can highly reduce costs or even bypass feature re-encoding of existing gallery images for in-production visual retrieval systems. Previous related works usually leverage losses…

计算机视觉与模式识别 · 计算机科学 2021-08-05 Qiang Meng , Chixiang Zhang , Xiaoqiang Xu , Feng Zhou

Deep learning has been shown to achieve impressive results in several domains like computer vision and natural language processing. A key element of this success has been the development of new loss functions, like the popular cross-entropy…

机器学习 · 计算机科学 2019-07-19 Francesco Giannini , Giuseppe Marra , Michelangelo Diligenti , Marco Maggini , Marco Gori

A mainstream type of current self-supervised learning methods pursues a general-purpose representation that can be well transferred to downstream tasks, typically by optimizing on a given pretext task such as instance discrimination. In…

计算机视觉与模式识别 · 计算机科学 2022-10-21 Xin Liu , Zhongdao Wang , Yali Li , Shengjin Wang

We consider the problem setting of prediction with expert advice with possibly heavy-tailed losses, i.e. the only assumption on the losses is an upper bound on their second moments, denoted by $\theta$. We develop adaptive algorithms that…

机器学习 · 计算机科学 2026-01-09 Antoine Moulin , Emmanuel Esposito , Dirk van der Hoeven

Many complex multi-target prediction problems that concern large target spaces are characterised by a need for efficient prediction strategies that avoid the computation of predictions for all targets explicitly. Examples of such problems…

信息检索 · 计算机科学 2018-03-06 Michiel Stock , Krzysztof Dembczynski , Bernard De Baets , Willem Waegeman

It is well-known that classifiers are vulnerable to adversarial perturbations. To defend against adversarial perturbations, various certified robustness results have been derived. However, existing certified robustnesses are limited to…

机器学习 · 计算机科学 2019-12-23 Jinyuan Jia , Xiaoyu Cao , Binghui Wang , Neil Zhenqiang Gong

A novel method for tackling the problem of imbalanced data in medical image segmentation is proposed in this work. In balanced cross entropy (CE) loss, which is a type of weighted CE loss, the weight assigned to each class is the in-verse…

图像与视频处理 · 电气工程与系统科学 2024-12-10 Seyed Mohsen Hosseini , Mahdieh Soleymani Baghshah

The long-tailed image classification task remains important in the development of deep neural networks as it explicitly deals with large imbalances in the class frequencies of the training data. While uncommon in engineered datasets, this…

计算机视觉与模式识别 · 计算机科学 2023-07-12 Marc-Antoine Lavoie , Steven Waslander

In open set recognition, deep neural networks encounter object classes that were unknown during training. Existing open set classifiers distinguish between known and unknown classes by measuring distance in a network's logit space, assuming…

计算机视觉与模式识别 · 计算机科学 2021-03-04 Dimity Miller , Niko Sünderhauf , Michael Milford , Feras Dayoub