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Metric learning aims to learn a highly discriminative model encouraging the embeddings of similar classes to be close in the chosen metrics and pushed apart for dissimilar ones. The common recipe is to use an encoder to extract embeddings…

计算机视觉与模式识别 · 计算机科学 2022-03-23 Aleksandr Ermolov , Leyla Mirvakhabova , Valentin Khrulkov , Nicu Sebe , Ivan Oseledets

In this paper, we propose a visual tracker based on a metric-weighted linear representation of appearance. In order to capture the interdependence of different feature dimensions, we develop two online distance metric learning methods using…

计算机视觉与模式识别 · 计算机科学 2016-11-17 Xi Li , Chunhua Shen , Anthony Dick , Zhongfei Zhang , Yueting Zhuang

Neural networks (NN) for single-view 3D reconstruction (SVR) have gained in popularity. Recent work points out that for SVR, most cutting-edge NNs have limited performance on reconstructing unseen objects because they rely primarily on…

计算机视觉与模式识别 · 计算机科学 2021-12-01 Yefan Zhou , Yiru Shen , Yujun Yan , Chen Feng , Yaoqing Yang

We introduce a novel framework for learning in neural networks by decomposing each neuron's weight vector into two distinct parts, $W_1$ and $W_2$, thereby modeling contrastive information directly at the neuron level. Traditional gradient…

机器学习 · 计算机科学 2025-03-19 Xi Wang

Deep learning based techniques achieve state-of-the-art results in a wide range of image reconstruction tasks like compressed sensing. These methods almost always have hyperparameters, such as the weight coefficients that balance the…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Alan Q. Wang , Adrian V. Dalca , Mert R. Sabuncu

We present a novel two-view geometry estimation framework which is based on a differentiable robust loss function fitting. We propose to treat the robust fundamental matrix estimation as an implicit layer, which allows us to avoid…

计算机视觉与模式识别 · 计算机科学 2024-10-24 Vladislav Pyatov , Iaroslav Koshelev , Stamatis Lefkimmiatis

Can we identify the weights of a neural network by probing its input-output mapping? At first glance, this problem seems to have many solutions because of permutation, overparameterisation and activation function symmetries. Yet, we show…

神经与进化计算 · 计算机科学 2024-06-28 Flavio Martinelli , Berfin Simsek , Wulfram Gerstner , Johanni Brea

Despite the remarkable performance of supervised medical image segmentation models, relying on a large amount of labeled data is impractical in real-world situations. Semi-supervised learning approaches aim to alleviate this challenge using…

计算机视觉与模式识别 · 计算机科学 2025-09-17 Yunyao Lu , Yihang Wu , Ahmad Chaddad , Tareef Daqqaq , Reem Kateb

Network backbones provide useful sparse representations of weighted networks by keeping only their most important links, permitting a range of computational speedups and simplifying network visualizations. A key limitation of existing…

社会与信息网络 · 计算机科学 2025-06-13 Alec Kirkley

Traditional analytical reflectance models, while compact and interpretable, lack the capacity to accurately represent physical measurements. Recent neural models, which closely fit input data, are less generalizable and often more expensive…

图形学 · 计算机科学 2026-04-28 Xuanzhe Shen , Xiaohe Ma , Kun Zhou , Hongzhi Wu

Gradient boosting algorithms construct a regression predictor using a linear combination of ``base learners''. Boosting also offers an approach to obtaining robust non-parametric regression estimators that are scalable to applications with…

统计方法学 · 统计学 2020-08-11 Xiaomeng Ju , Matías Salibián-Barrera

Reweighting a distribution to minimize a distance to a target distribution is a powerful and flexible strategy for estimating a wide range of causal effects, but can be challenging in practice because optimal weights typically depend on…

机器学习 · 统计学 2026-02-16 Oscar Clivio , Avi Feller , Chris Holmes

Target imbalance affects the performance of recent deep learning methods in many medical image segmentation tasks. It is a twofold problem: class imbalance - positive class (lesion) size compared to negative class (non-lesion) size; lesion…

图像与视频处理 · 电气工程与系统科学 2020-07-21 Boris Shirokikh , Alexey Shevtsov , Anvar Kurmukov , Alexandra Dalechina , Egor Krivov , Valery Kostjuchenko , Andrey Golanov , Mikhail Belyaev

Deep learning based image segmentation methods have achieved great success, even having human-level accuracy in some applications. However, due to the black box nature of deep learning, the best method may fail in some situations. Thus…

计算机视觉与模式识别 · 计算机科学 2020-05-28 Leixin Zhou , Wenxiang Deng , Xiaodong Wu

Pattern recognition applications often suffer from skewed data distributions between classes, which may vary during operations w.r.t. the design data. Two-class classification systems designed using skewed data tend to recognize the…

机器学习 · 计算机科学 2019-12-02 Roghayeh Soleymani , Eric Granger , Giorgio Fumera

We introduce Random Feature Representation Boosting (RFRBoost), a novel method for constructing deep residual random feature neural networks (RFNNs) using boosting theory. RFRBoost uses random features at each layer to learn the functional…

机器学习 · 统计学 2025-08-29 Nikita Zozoulenko , Thomas Cass , Lukas Gonon

Convolutional Neural Networks (CNNs) have achieved remarkable success across a wide range of machine learning tasks by leveraging hierarchical feature learning through deep architectures. However, the large number of layers and millions of…

机器学习 · 统计学 2025-11-18 Biyi Fang , Truong Vo , Jean Utke , Diego Klabjan

Boosting is a method for learning a single accurate predictor by linearly combining a set of less accurate weak learners. Recently, structured learning has found many applications in computer vision. Inspired by structured support vector…

机器学习 · 计算机科学 2020-03-10 Chunhua Shen , Guosheng Lin , Anton van den Hengel

Supervised machine learning often operates on the data-driven paradigm, wherein internal model parameters are autonomously optimized to converge predicted outputs with the ground truth, devoid of explicitly programming rules or a priori…

机器学习 · 计算机科学 2024-12-12 Daniel Geissler , Bo Zhou , Mengxi Liu , Paul Lukowicz

In the interactive image segmentation task, the Particle Competition and Cooperation (PCC) model is fed with a complex network, which is built from the input image. In the network construction phase, a weight vector is needed to define the…

计算机视觉与模式识别 · 计算机科学 2020-07-06 Jefferson Antonio Ribeiro Passerini , Fabricio Aparecido Breve