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Non-uniformed 3D sparse data, e.g., point clouds or voxels in different spatial positions, make contribution to the task of 3D object detection in different ways. Existing basic components in sparse convolutional networks (Sparse CNNs)…

计算机视觉与模式识别 · 计算机科学 2022-04-27 Yukang Chen , Yanwei Li , Xiangyu Zhang , Jian Sun , Jiaya Jia

In this work, we consider learning sparse models in large scale settings, where the number of samples and the feature dimension can grow as large as millions or billions. Two immediate issues occur under such challenging scenario: (i)…

机器学习 · 统计学 2023-01-31 Atul Dhingra , Jie Shen , Nicholas Kleene

Convolutional sparse coding (CSC) improves sparse coding by learning a shift-invariant dictionary from the data. However, existing CSC algorithms operate in the batch mode and are expensive, in terms of both space and time, on large…

计算机视觉与模式识别 · 计算机科学 2018-08-01 Yaqing Wang , Quanming Yao , James T. Kwok , Lionel M. Ni

3D object detection is essential for autonomous driving and robotic perception, yet its reliance on large-scale manually annotated data limits scalability and adaptability. To reduce annotation dependency, unsupervised and…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Yushen He , Lei Zhao , Weidong Chen

Sparse coding has been popularly used as an effective data representation method in various applications, such as computer vision, medical imaging and bioinformatics, etc. However, the conventional sparse coding algorithms and its manifold…

计算机视觉与模式识别 · 计算机科学 2013-04-04 Jing-Yan Wang

Convolutional Neural Network models have successfully detected retinal illness from optical coherence tomography (OCT) and fundus images. These CNN models frequently rely on vast amounts of labeled data for training, difficult to obtain,…

计算机视觉与模式识别 · 计算机科学 2022-01-28 Sourya Dipta Das , Saikat Dutta , Nisarg A. Shah , Dwarikanath Mahapatra , Zongyuan Ge

Sparse learning has been shown to be effective in solving many real-world problems. Finding sparse representations is a fundamentally important topic in many fields of science including signal processing, computer vision, genome study and…

计算机视觉与模式识别 · 计算机科学 2018-07-30 Jun Cheng

Recent image classification algorithms, by learning deep features from large-scale datasets, have achieved significantly better results comparing to the classic feature-based approaches. However, there are still various challenges of image…

计算机视觉与模式识别 · 计算机科学 2021-06-02 Hao Cheng , Kim-Hui Yap , Bihan Wen

While recent progress in deep reinforcement learning has enabled robots to learn complex behaviors, tasks with long horizons and sparse rewards remain an ongoing challenge. In this work, we propose an effective reward shaping method through…

机器学习 · 计算机科学 2020-08-04 Xingyu Lu , Stas Tiomkin , Pieter Abbeel

Spiking neural networks (SNNs) equipped with latency coding and spike-timing dependent plasticity rules offer an alternative to solve the data and energy bottlenecks of standard computer vision approaches: they can learn visual features…

计算机视觉与模式识别 · 计算机科学 2020-12-22 Pierre Falez , Pierre Tirilly , Ioan Marius Bilasco , Philippe Devienne , Pierre Boulet

While it is commonly observed in practice that pruning networks to a certain level of sparsity can improve the quality of the features, a theoretical explanation of this phenomenon remains elusive. In this work, we investigate this by…

机器学习 · 统计学 2024-06-14 Nuri Mert Vural , Murat A. Erdogdu

We investigate the sparse functional identification of complex cells and the decoding of visual stimuli encoded by an ensemble of complex cells. The reconstruction algorithm of both temporal and spatio-temporal stimuli is formulated as a…

神经元与认知 · 定量生物学 2017-06-20 Aurel A. Lazar , Nikul H. Ukani , Yiyin Zhou

Three-factor learning rules in Spiking Neural Networks (SNNs) have emerged as a crucial extension to traditional Hebbian learning and Spike-Timing-Dependent Plasticity (STDP), incorporating neuromodulatory signals to improve adaptation and…

神经与进化计算 · 计算机科学 2025-04-28 Szymon Mazurek , Jakub Caputa , Jan K. Argasiński , Maciej Wielgosz

Sparse coding can learn good robust representation to noise and model more higher-order representation for image classification. However, the inference algorithm is computationally expensive even though the supervised signals are used to…

计算机视觉与模式识别 · 计算机科学 2015-01-06 Jun Li , Heyou Chang , Jian Yang

Classification with a sparsity constraint on the solution plays a central role in many high dimensional machine learning applications. In some cases, the features can be grouped together so that entire subsets of features can be selected or…

机器学习 · 计算机科学 2014-09-05 Nikhil Rao , Robert Nowak , Christopher Cox , Timothy Rogers

Existing contrastive learning methods rely on pairwise sample contrast $z_x^\top z_{x'}$ to learn data representations, but the learned features often lack clear interpretability from a human perspective. Theoretically, it lacks feature…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Qi Zhang , Yifei Wang , Yisen Wang

In this work, we present SpaRC, a novel Sparse fusion transformer for 3D perception that integrates multi-view image semantics with Radar and Camera point features. The fusion of radar and camera modalities has emerged as an efficient…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Philipp Wolters , Johannes Gilg , Torben Teepe , Fabian Herzog , Felix Fent , Gerhard Rigoll

Large pre-trained transformers have revolutionized artificial intelligence across various domains, and fine-tuning remains the dominant approach for adapting these models to downstream tasks due to the cost of training from scratch.…

计算机视觉与模式识别 · 计算机科学 2025-07-16 Wei Chen , Jingxi Yu , Zichen Miao , Qiang Qiu

Sparse support vector machine (SVM) is a popular classification technique that can simultaneously learn a small set of the most interpretable features and identify the support vectors. It has achieved great successes in many real-world…

机器学习 · 统计学 2019-07-19 Weizhong Zhang , Bin Hong , Wei Liu , Jieping Ye , Deng Cai , Xiaofei He , Jie Wang

The recognition of texts existing in camera-captured images has become an important issue for a great deal of research during the past few decades. This give birth to Scene Character Recognition (SCR) which is an important step in scene…

计算机视觉与模式识别 · 计算机科学 2018-07-20 Maroua Tounsi , Ikram Moalla , Frank Lebourgeois , Adel M. Alimi