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Class imbalance remains a significant challenge in machine learning, particularly for tabular data classification tasks. While Gradient Boosting Decision Trees (GBDT) models have proven highly effective for such tasks, their performance can…

机器学习 · 计算机科学 2024-07-22 Jiaqi Luo , Yuan Yuan , Shixin Xu

Semi-supervised learning (SSL) has been proposed to leverage unlabeled data for training powerful models when only limited labeled data is available. While existing SSL methods assume that samples in the labeled and unlabeled data share the…

计算机视觉与模式识别 · 计算机科学 2020-07-23 Qing Yu , Daiki Ikami , Go Irie , Kiyoharu Aizawa

In the rapidly evolving field of autonomous driving, precise segmentation of LiDAR data is crucial for understanding complex 3D environments. Traditional approaches often rely on disparate, standalone codebases, hindering unified…

计算机视觉与模式识别 · 计算机科学 2024-05-31 Jiahao Sun , Chunmei Qing , Xiang Xu , Lingdong Kong , Youquan Liu , Li Li , Chenming Zhu , Jingwei Zhang , Zeqi Xiao , Runnan Chen , Tai Wang , Wenwei Zhang , Kai Chen

Data imbalance is a common problem in machine learning that can have a critical effect on the performance of a model. Various solutions exist but their impact on the convergence of the learning dynamics is not understood. Here, we elucidate…

机器学习 · 统计学 2024-02-20 Emanuele Francazi , Marco Baity-Jesi , Aurelien Lucchi

Despite outstanding semantic scene segmentation in closed-worlds, deep neural networks segment novel instances poorly, which is required for autonomous agents acting in an open world. To improve out-of-distribution (OOD) detection for…

计算机视觉与模式识别 · 计算机科学 2023-11-15 Meghna Gummadi , Cassandra Kent , Karl Schmeckpeper , Eric Eaton

Deep Learning models are easily disturbed by variations in the input images that were not seen during training, resulting in unpredictable behaviours. Such Out-of-Distribution (OOD) images represent a significant challenge in the context of…

图像与视频处理 · 电气工程与系统科学 2024-10-28 Benjamin Lambert , Florence Forbes , Senan Doyle , Alan Tucholka , Michel Dojat

Assessing the robustness of perception models to covariate shifts and their ability to detect out-of-distribution (OOD) inputs is crucial for safety-critical applications such as autonomous vehicles. By nature of such applications, however,…

计算机视觉与模式识别 · 计算机科学 2024-09-25 Thibaut Loiseau , Tuan-Hung Vu , Mickael Chen , Patrick Pérez , Matthieu Cord

One promising approach to dealing with datapoints that are outside of the initial training distribution (OOD) is to create new classes that capture similarities in the datapoints previously rejected as uncategorizable. Systems that generate…

机器学习 · 计算机科学 2020-02-25 Jeremy Nixon , Jeremiah Liu , David Berthelot

Autonomous systems rely on accurate 3D object detection from LiDAR data, yet most detectors are limited to a predefined set of known classes, making them vulnerable to unexpected out-of-distribution (OOD) objects. In this work, we present…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Louis Soum-Fontez , Jean-Emmanuel Deschaud , François Goulette

Over the past few years, there has been remarkable progress in research on 3D point clouds and their use in autonomous driving scenarios has become widespread. However, deep learning methods heavily rely on annotated data and often face…

计算机视觉与模式识别 · 计算机科学 2024-03-06 Jin Fang , Dingfu Zhou , Jingjing Zhao , Chenming Wu , Chulin Tang , Cheng-Zhong Xu , Liangjun Zhang

A crucial requirement for reliable deployment of deep learning models for safety-critical applications is the ability to identify out-of-distribution (OOD) data points, samples which differ from the training data and on which a model might…

机器学习 · 计算机科学 2021-06-11 Dennis Ulmer , Giovanni Cinà

3D semantic occupancy prediction is crucial for autonomous driving, providing a dense, semantically rich environmental representation. However, existing methods focus on in-distribution scenes, making them susceptible to Out-of-Distribution…

计算机视觉与模式识别 · 计算机科学 2026-01-13 Yuheng Zhang , Mengfei Duan , Kunyu Peng , Yuhang Wang , Ruiping Liu , Fei Teng , Kai Luo , Zhiyong Li , Kailun Yang

To detect distribution shifts and improve model safety, many out-of-distribution (OOD) detection methods rely on the predictive uncertainty or features of supervised models trained on in-distribution data. In this paper, we critically…

In real world scenarios, out-of-distribution (OOD) datasets may have a large distributional shift from training datasets. This phenomena generally occurs when a trained classifier is deployed on varying dynamic environments, which causes a…

图像与视频处理 · 电气工程与系统科学 2022-09-08 Harshita Boonlia , Tanmoy Dam , Md Meftahul Ferdaus , Sreenatha G. Anavatti , Ankan Mullick

LiDAR point cloud semantic segmentation is essential for interpreting 3D environments in applications such as autonomous driving and robotics. Recent methods achieve strong performance by exploiting different point cloud representations or…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Simone Mosco , Daniel Fusaro , Wanmeng Li , Emanuele Menegatti , Alberto Pretto

Prior research on out-of-distribution detection (OoDD) has primarily focused on single-modality models. Recently, with the advent of large-scale pretrained vision-language models such as CLIP, OoDD methods utilizing such multi-modal…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Jeonghyeon Kim , Sangheum Hwang

In this work, we propose MixMOOD - a systematic approach to mitigate effect of class distribution mismatch in semi-supervised deep learning (SSDL) with MixMatch. This work is divided into two components: (i) an extensive out of distribution…

Reliable deep learning models require not only accurate predictions but also well-calibrated confidence estimates to ensure dependable uncertainty estimation. This is crucial in safety-critical applications like autonomous driving, which…

计算机视觉与模式识别 · 计算机科学 2025-05-14 Hanieh Shojaei Miandashti , Qianqian Zou , Claus Brenner

Automated driving object detection has always been a challenging task in computer vision due to environmental uncertainties. These uncertainties include significant differences in object sizes and encountering the class unseen. It may…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Zezhou Wang , Guitao Cao , Xidong Xi , Jiangtao Wang

Off-road image semantic segmentation is challenging due to the presence of uneven terrains, unstructured class boundaries, irregular features and strong textures. These aspects affect the perception of the vehicle from which the information…

计算机视觉与模式识别 · 计算机科学 2024-09-02 Kasi Viswanath , Kartikeya Singh , Peng Jiang , Sujit P. B. , Srikanth Saripalli