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Nowadays, data is represented by vectors. Retrieving those vectors, among millions and billions, that are similar to a given query is a ubiquitous problem, known as similarity search, of relevance for a wide range of applications.…

机器学习 · 计算机科学 2023-07-26 Cecilia Aguerrebere , Ishwar Bhati , Mark Hildebrand , Mariano Tepper , Ted Willke

Metric space magnitude, an active field of research in algebraic topology, is a scalar quantity that summarizes the effective number of distinct points that live in a general metric space. The {\em weighting vector} is a closely-related…

机器学习 · 计算机科学 2021-06-03 Eric Bunch , Jeffery Kline , Daniel Dickinson , Suhaas Bhat , Glenn Fung

A symmetry on rigid motion is one of the salient factors in efficient learning of 3D point cloud problems. Group convolution has been a representative method to extract equivariant features, but its realizations have struggled to retain…

计算机视觉与模式识别 · 计算机科学 2026-03-19 Jaein Kim , Hee Bin Yoo , Dong-Sig Han , Byoung-Tak Zhang

The goal of objective point cloud quality assessment (PCQA) research is to develop quantitative metrics that measure point cloud quality in a perceptually consistent manner. Merging the research of cognitive science and intuition of the…

计算机视觉与模式识别 · 计算机科学 2023-11-30 Yujie Zhang , Qi Yang , Yifei Zhou , Xiaozhong Xu , Le Yang , Yiling Xu

The quality evaluation of three deep learning-based coding solutions for point cloud geometry, notably ADLPCC, PCC GEO CNNv2, and PCGCv2, is presented. The MPEG G-PCC was used as an anchor. Furthermore, LUT SR, which uses multi-resolution…

图像与视频处理 · 电气工程与系统科学 2024-02-09 Joao Prazeres , Rafael Rodrigues , Manuela Pereira , Antonio M. G. Pinheiro

Large language model (LLM) decoding is a major inference bottleneck because its low arithmetic intensity makes performance highly sensitive to memory bandwidth. 3D-stacked near-memory processing (NMP) provides substantially higher local…

硬件体系结构 · 计算机科学 2026-04-10 Chenyang Ai , Yixing Zhang , Haoran Wu , Yudong Pan , Lechuan Zhao , Wenhui OU

Feature matching is a challenging computer vision task that involves finding correspondences between two images of a 3D scene. In this paper we consider the dense approach instead of the more common sparse paradigm, thus striving to find…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Johan Edstedt , Ioannis Athanasiadis , Mårten Wadenbäck , Michael Felsberg

Machine-learning models based on a point-cloud representation of a physical object are ubiquitous in scientific applications and particularly well-suited to the atomic-scale description of molecules and materials. Among the many different…

化学物理 · 物理学 2023-03-08 Filippo Bigi , Sergey N. Pozdnyakov , Michele Ceriotti

Vector glyphs are the atomic units of digital typography, yet most learning-based pipelines still depend on carefully curated exemplar sheets and raster-to-vector postprocessing, which limits accessibility and editability. We introduce…

Scaling the input image resolution is essential for enhancing the performance of Vision Language Models (VLMs), particularly in text-rich image understanding tasks. However, popular visual encoders such as ViTs become inefficient at high…

Text-to-point-cloud (T2P) localization aims to infer precise spatial positions within 3D point cloud maps from natural language descriptions, reflecting how humans perceive and communicate spatial layouts through language. However, existing…

计算机视觉与模式识别 · 计算机科学 2026-03-11 Shuhao Kang , Youqi Liao , Peijie Wang , Wenlong Liao , Qilin Zhang , Benjamin Busam , Xieyuanli Chen , Yun Liu

Weight-only quantization is widely used to mitigate the memory-bound nature of LLM inference. Codebook-based methods extend this trend by achieving strong accuracy in the extremely low-bit regime (e.g., 2-bit). However, current kernels rely…

机器学习 · 计算机科学 2025-12-23 Gunho Park , Jeongin Bae , Byeongwook Kim , Baeseong park , Jiwon Ryu , Hoseung Kim , Se Jung Kwon , Dongsoo Lee

Although Faster R-CNN and its variants have shown promising performance in object detection, they only exploit simple first-order representation of object proposals for final classification and regression. Recent classification methods…

计算机视觉与模式识别 · 计算机科学 2018-04-03 Hao Wang , Qilong Wang , Mingqi Gao , Peihua Li , Wangmeng Zuo

The Versatile Video Coding (VVC) standard significantly improves compression efficiency over its predecessor, HEVC, but at the cost of substantially higher computational complexity, particularly in intra-frame prediction. This stage employs…

硬件体系结构 · 计算机科学 2025-09-16 Lucas M. Leipnitz de Fraga , Cláudio Machado Diniz

Quantization is a critical technique for accelerating LLM inference by reducing memory footprint and improving computational efficiency. Among various schemes, 4-bit weight and 8-bit activation quantization (W4A8) offers a strong balance…

分布式、并行与集群计算 · 计算机科学 2025-09-03 Huanqi Hu , Bowen Xiao , Shixuan Sun , Jianian Yin , Zhexi Zhang , Xiang Luo , Chengquan Jiang , Weiqi Xu , Xiaoying Jia , Xin Liu , Minyi Guo

This paper proposes a lossless point cloud (PC) geometry compression method that uses neural networks to estimate the probability distribution of voxel occupancy. First, to take into account the PC sparsity, our method adaptively partitions…

图像与视频处理 · 电气工程与系统科学 2021-07-02 Dat Thanh Nguyen , Maurice Quach , Giuseppe Valenzise , Pierre Duhamel

The pretrain-finetune paradigm has achieved great success in NLP and 2D image fields because of the high-quality representation ability and transferability of their pretrained models. However, pretraining such a strong model is difficult in…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Xiaoshui Huang , Zhou Huang , Sheng Li , Wentao Qu , Tong He , Yuenan Hou , Yifan Zuo , Wanli Ouyang

The Visual Geometry Grounded Transformer (VGGT) marks a significant leap forward in 3D scene reconstruction, as it is the first model that directly infers all key 3D attributes (camera poses, depths, and dense geometry) jointly in one pass.…

计算机视觉与模式识别 · 计算机科学 2025-11-27 Weitian Wang , Lukas Meiner , Rai Shubham , Cecilia De La Parra , Akash Kumar

Kernel approximation is widely used to scale up kernel SVM training and prediction. However, the memory and computation costs of kernel approximation models are still too high if we want to deploy them on memory-limited devices such as…

机器学习 · 计算机科学 2020-10-07 Zijian Lei , Liang Lan

The key to effective point cloud compression is to obtain a robust context model consistent with complex 3D data structures. Recently, the advancement of large language models (LLMs) has highlighted their capabilities not only as powerful…

人工智能 · 计算机科学 2024-08-19 Yuqi Ye , Wei Gao