中文
相关论文

相关论文: Uniform Manifold Approximation with Two-phase Opti…

200 篇论文

The availability of massive earth observing satellite data provide huge opportunities for land use and land cover mapping. However, such mapping effort is challenging due to the existence of various land cover classes, noisy data, and the…

计算机视觉与模式识别 · 计算机科学 2021-09-29 Rahul Ghosh , Praveen Ravirathinam , Xiaowei Jia , Chenxi Lin , Zhenong Jin , Vipin Kumar

MR imaging is a valuable diagnostic tool allowing to non-invasively visualize patient anatomy and pathology with high soft-tissue contrast. However, MRI acquisition is typically time-consuming, leading to patient discomfort and increased…

图像与视频处理 · 电气工程与系统科学 2025-12-23 Jan Nikolas Morshuis , Matthias Hein , Christian F. Baumgartner

Existing multi-agent deep reinforcement learning (MADRL) methods for multi-UAV navigation face challenges in generalization, particularly when applied to unseen complex environments. To address these limitations, we propose a…

多智能体系统 · 计算机科学 2024-10-22 Anning Wei , Jintao Liang , Kaiyuan Lin , Ziyue Li , Rui Zhao

The performance of medical image segmentation is increasingly defined by the efficiency of data utilization rather than merely the volume of raw data. Accurate segmentation, particularly for complex pathologies like meningiomas, demands…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Yunhao Xu , Fuquan Zong , Yexuan Xing , Chulong Zhang , Guang Yang , Shilong Yang , Xiaokun Liang , Juan Yu

Medical image segmentation is essential for computer-assisted diagnosis and treatment planning, yet substantial anatomical variability and boundary ambiguity hinder reliable delineation of fine structures. We propose RDTE-UNet, a…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Jierui Qu , Jianchun Zhao

Robotic designs played an important role in recent advances by providing powerful robots with complex mechanics. Many recent systems rely on parallel actuation to provide lighter limbs and allow more complex motion. However, these emerging…

机器人学 · 计算机科学 2025-04-11 Virgile Batto , Ludovic de Matteis , Nicolas Mansard

A recently proposed dimensional reduction approach for studying synchronization in the Kuramoto model is employed to build optimal network topologies to favor or to suppress synchronization. The approach is based in the introduction of a…

适应与自组织系统 · 物理学 2015-12-02 Rafael S. Pinto , Alberto Saa

We propose a method for learning topology-preserving data representations (dimensionality reduction). The method aims to provide topological similarity between the data manifold and its latent representation via enforcing the similarity in…

Bayesian optimization (BO) has shown impressive results in a variety of applications within low-to-moderate dimensional Euclidean spaces. However, extending BO to high-dimensional settings remains a significant challenge. We address this…

机器学习 · 统计学 2024-03-11 Shouri Hu , Jiawei Li , Zhibo Cai

In this paper we present a mixed projection- and density-based topology optimization approach. The aim is to combine the benefits of both parametrizations: the explicit geometric representation provides specific controls on certain design…

计算工程、金融与科学 · 计算机科学 2019-10-09 Nicolò Pollini , Oded Amir

Scientific and engineering processes deliver massive high-dimensional data sets that are generated as non-linear transformations of an initial state and few process parameters. Mapping such data to a low-dimensional manifold facilitates…

机器学习 · 统计学 2018-08-07 Frank Schoeneman , Varun Chandola , Nils Napp , Olga Wodo , Jaroslaw Zola

The purpose of this work is to examine the structure of optimal dual fusion frames and get more exibility in the use of dual fusion frames for erasures of subspaces. We deal with optimal dual fusion frames with respect to different…

泛函分析 · 数学 2021-12-24 Fahimeh Arabyani-Neyshaburi , Ali Akbar Arefijamaal

In this paper, a joint design of instantaneous channel estimation, beam tracking, and adaptive beamformer construction for a massive multiple-input multiple-output (MIMO) system is proposed. This design focuses on efficiency in terms of…

信息论 · 计算机科学 2023-03-02 Anil Kurt , Gokhan M. Guvensen

Compression artifacts reduction (CAR) is a challenging problem in the field of remote sensing. Most recent deep learning based methods have demonstrated superior performance over the previous hand-crafted methods. In this paper, we propose…

计算机视觉与模式识别 · 计算机科学 2018-04-03 Baochang Zhang , Jiaxin Gu , Chen Chen , Jungong Han , Xiangbo Su , Xianbin Cao , Jianzhuang Liu

This paper considers the problem of nonlinear dimensionality reduction. Unlike existing methods, such as LLE, ISOMAP, which attempt to unfold the true manifold in the low dimensional space, our algorithm tries to preserve the nonlinear…

计算机视觉与模式识别 · 计算机科学 2019-02-15 Xu Zhao , Zongli Jiang

This work introduces IsUMap, a novel manifold learning technique that enhances data representation by integrating aspects of UMAP and Isomap with Vietoris-Rips filtrations. We present a systematic and detailed construction of a metric…

机器学习 · 计算机科学 2026-02-09 Lukas Silvester Barth , Fatemeh , Fahimi , Parvaneh Joharinad , Jürgen Jost , Janis Keck

Digital beamforming and waveform generation techniques in MIMO radar offer enormous advantages in terms of flexibility and performance compared to conventional radar systems based on analog implementations. To allow for such fully digital…

信息论 · 计算机科学 2018-12-27 Amine Mezghani , Robert W. Heath

We present a robust multiple manifolds structure learning (RMMSL) scheme to robustly estimate data structures under the multiple low intrinsic dimensional manifolds assumption. In the local learning stage, RMMSL efficiently estimates local…

机器学习 · 计算机科学 2012-06-22 Dian Gong , Xuemei Zhao , Gerard Medioni

Ultrasound computed tomography (USCT) holds great promise for breast cancer screening. Waveform inversion-based image reconstruction methods account for higher order diffraction effects and can produce high-resolution USCT images, but are…

医学物理 · 物理学 2017-08-25 Thomas P. Matthews , Kun Wang , Cuiping Li , Neb Duric , Mark A. Anastasio

Hyperparameter optimization (HPO) plays a central role in the automated machine learning (AutoML). It is a challenging task as the response surfaces of hyperparameters are generally unknown, hence essentially a global optimization problem.…

机器学习 · 计算机科学 2021-06-18 Zebin Yang , Aijun Zhang