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Detecting out-of-distribution (OOD) instances is significant for the safe deployment of NLP models. Among recent textual OOD detection works based on pretrained language models (PLMs), distance-based methods have shown superior performance.…

计算与语言 · 计算机科学 2022-10-17 Sishuo Chen , Xiaohan Bi , Rundong Gao , Xu Sun

In this work, to facilitate the real-time processing of multi-scan registration error minimization on factor graphs, we devise a point cloud downsampling algorithm based on coreset extraction. This algorithm extracts a subset of the…

机器人学 · 计算机科学 2025-05-05 Kenji Koide , Aoki Takanose , Shuji Oishi , Masashi Yokozuka

Feature descriptors of point clouds are used in several applications, such as registration and part segmentation of 3D point clouds. Learning discriminative representations of local geometric features is unquestionably the most important…

计算机视觉与模式识别 · 计算机科学 2022-09-01 Seunghwan Jung , Yeong-Gil Shin , Minyoung Chung

In this study, we tackle the challenge of outlier-robust predictive modeling using highly expressive neural networks. Our approach integrates two key components: (1) a transformed trimmed loss (TTL), a computationally efficient variant of…

统计方法学 · 统计学 2025-05-14 Akifumi Okuno , Shotaro Yagishita

Robust matching of side-scan sonar imagery remains a fundamental challenge in seafloor mapping due to view-dependent backscatter, shadows, and geometric distortion. This paper proposes a novel matching framework that combines physical…

仪器与探测器 · 物理学 2025-11-24 Can Lei , Hayat Rajani , Nuno Gracias , Rafael Garcia , Huigang Wang

Despite the prevalence of retrieval-augmented language models (RALMs), the seamless integration of these models with retrieval mechanisms to enhance performance in document-based tasks remains challenging. While some post-retrieval…

计算与语言 · 计算机科学 2024-06-05 Chuankai Xu , Dongming Zhao , Bo Wang , Hanwen Xing

Point sets matching method is very important in computer vision, feature extraction, fingerprint matching, motion estimation and so on. This paper proposes a robust point sets matching method. We present an iterative algorithm that is…

计算机视觉与模式识别 · 计算机科学 2014-11-05 Xiao Liu , Congying Han , Tiande Guo

Existing LiDAR semantic segmentation methods often struggle with performance declines in adverse weather conditions. Previous work has addressed this issue by simulating adverse weather or employing universal data augmentation during…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Junsung Park , Kyungmin Kim , Hyunjung Shim

Real-time registration of partially overlapping point clouds has emerging applications in cooperative perception for autonomous vehicles and multi-agent SLAM. The relative translation between point clouds in these applications is higher…

计算机视觉与模式识别 · 计算机科学 2021-12-21 Eduardo Arnold , Sajjad Mozaffari , Mehrdad Dianati

The recently introduced Gradient Methods with Memory use a subset of the past oracle information to create an accurate model of the objective function that enables them to surpass the Gradient Method in practical performance. The model…

最优化与控制 · 数学 2024-01-30 Mihai I. Florea

Recent studies in Retrieval-Augmented Generation (RAG) have investigated extracting evidence from retrieved passages to reduce computational costs and enhance the final RAG performance, yet it remains challenging. Existing methods heavily…

计算与语言 · 计算机科学 2024-10-16 Xinping Zhao , Dongfang Li , Yan Zhong , Boren Hu , Yibin Chen , Baotian Hu , Min Zhang

Deep neural networks for image classification often exhibit overconfidence on out-of-distribution (OOD) samples. To address this, we introduce Geometrically Constrained Outlier Synthesis (GCOS), a training-time regularization framework…

机器学习 · 计算机科学 2026-05-27 Daniil Karzanov , Marcin Detyniecki

In this paper, we present a second order spatial compatibility (SC^2) measure based method for efficient and robust point cloud registration (PCR), called SC^2-PCR. Firstly, we propose a second order spatial compatibility (SC^2) measure to…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Zhi Chen , Kun Sun , Fan Yang , Wenbing Tao

Outlier detection in data streams has gained wide importance presently due to the increasing cases of fraud in various applications of data streams. The techniques for outlier detection have been divided into either statistics based,…

分布式、并行与集群计算 · 计算机科学 2010-03-25 Parneeta Dhaliwal , M. P. S. Bhatia , Priti Bansal

Robustness has become a critical attribute for the deployment of RAG systems in real-world applications. Existing research focuses on robustness to explicit noise (e.g., document semantics) but overlooks implicit noise (spurious features).…

计算与语言 · 计算机科学 2026-04-28 Shiping Yang , Jie Wu , Wenbiao Ding , Ning Wu , Shining Liang , Ming Gong , Hongzhi Li , Hengyuan Zhang , Angel X. Chang , Dongmei Zhang

We present a novel, effective method for global point cloud registration problems by geometric topology. Based on many point cloud pairwise registration methods (e.g ICP), we focus on the problem of accumulated error for the composition of…

计算机视觉与模式识别 · 计算机科学 2022-08-16 Yuxue Ren , Baowei Jiang , Wei Chen , Na Lei , Xianfeng David Gu

Cluster analysis and outlier detection are strongly coupled tasks in data mining area. Cluster structure can be easily destroyed by few outliers; on the contrary, outliers are defined by the concept of cluster, which are recognized as the…

机器学习 · 计算机科学 2019-09-04 Hongfu Liu , Jun Li , Yue Wu , Yun Fu

This paper considers the problem of recovering signals modeled by generative models from linear measurements contaminated with sparse outliers. We propose an outlier detection approach for reconstructing the ground-truth signals modeled by…

机器学习 · 统计学 2023-10-17 Jirong Yi , Jingchao Gao , Tianming Wang , Xiaodong Wu , Weiyu Xu

In this work, we aim to enhance model-based face reconstruction by avoiding fitting the model to outliers, i.e. regions that cannot be well-expressed by the model such as occluders or make-up. The core challenge for localizing outliers is…

计算机视觉与模式识别 · 计算机科学 2023-03-22 Chunlu Li , Andreas Morel-Forster , Thomas Vetter , Bernhard Egger , Adam Kortylewski

We address the problem of estimating the poses of multiple instances of the source point cloud within a target point cloud. Existing solutions require sampling a lot of hypotheses to detect possible instances and reject the outliers, whose…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Weixuan Tang , Danping Zou