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We train three convolutional neural networks (CNNs) to classify galaxies with Galaxy Zoo 2 dataset and extract the activations from the last fully connected layer or the last average pooling layer of CNNs to study the high-dimensional…

星系天体物理 · 物理学 2018-07-17 Jia-Ming Dai , Jizhou Tong

With the increasing availability of high-dimensional data, analysts often rely on exploratory data analysis to understand complex data sets. A key approach to exploring such data is dimensionality reduction, which embeds high-dimensional…

机器学习 · 计算机科学 2024-12-17 Pavlin G. Poličar , Blaž Zupan

Real estate contributes significantly to all major economies around the world. In particular, house prices have a direct impact on stakeholders, ranging from house buyers to financing companies. Thus, a plethora of techniques have been…

机器学习 · 计算机科学 2020-09-02 Sarkar Snigdha Sarathi Das , Mohammed Eunus Ali , Yuan-Fang Li , Yong-Bin Kang , Timos Sellis

We propose a new method for data visualization based on attraction-repulsion swarming (ARS) dynamics, which we call ARS visualization. ARS is a generalized framework that is based on viewing the t-distributed stochastic neighbor embedding…

机器学习 · 计算机科学 2024-11-19 Jingcheng Lu , Jeff Calder

Embedding high-dimensional data onto a low-dimensional manifold is of both theoretical and practical value. In this paper, we propose to combine deep neural networks (DNN) with mathematics-guided embedding rules for high-dimensional data…

机器学习 · 计算机科学 2022-08-19 Zixia Zhou , Xinrui Zu , Yuanyuan Wang , Boudewijn P. F. Lelieveldt , Qian Tao

In Magnetic Resonance Fingerprinting (MRF) the quality of the estimated parameter maps depends on the encoding capability of the variable flip angle train. In this work we show how the dimensionality reduction technique Hierarchical…

图像与视频处理 · 电气工程与系统科学 2019-10-08 Kirsten Koolstra , Peter Börnert , Boudewijn Lelieveldt , Andrew Webb , Oleh Dzyubachyk

Longitudinal MRIs are often used to capture the gradual deterioration of brain structure and function caused by aging or neurological diseases. Analyzing this data via machine learning generally requires a large number of ground-truth…

计算机视觉与模式识别 · 计算机科学 2021-06-21 Jiahong Ouyang , Qingyu Zhao , Ehsan Adeli , Edith V Sullivan , Adolf Pfefferbaum , Greg Zaharchuk , Kilian M Pohl

Single-cell sequencing is revolutionizing biology by enabling detailed investigations of cell-state transitions. Many biological processes unfold along continuous trajectories, yet it remains challenging to extract smooth, low-dimensional…

机器学习 · 统计学 2025-06-30 Rong Ma , Xi Li , Jingyuan Hu , Bin Yu

Single-cell RNA sequencing (scRNA-seq) is widely used to reveal heterogeneity in cells, which has given us insights into cell-cell communication, cell differentiation, and differential gene expression. However, analyzing scRNA-seq data is a…

机器学习 · 计算机科学 2023-06-27 Yuta Hozumi , Gu-Wei Wei

We are in the era where the Big Data analytics has changed the way of interpreting the various biomedical phenomena, and as the generated data increase, the need for new machine learning methods to handle this evolution grows. An indicative…

机器学习 · 计算机科学 2020-12-04 Panagiotis Anagnostou , Petros T. Barmbas , Aristidis G. Vrahatis , Sotiris K. Tasoulis

Different unsupervised models for dimensionality reduction like PCA, LLE, Shannon's mapping, tSNE, UMAP, etc. work on different principles, hence, they are difficult to compare on the same ground. Although they are usually good for…

统计方法学 · 统计学 2024-05-10 Subhrajyoty Roy

The exponential growth of data has intensified the gap between the availability of unlabeled data and the high cost of manual annotation. Graph Neural Networks (GNNs) have emerged as a promising solution, as they exploit relational…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Rafael Mendonça Duarte , Jean Roberto Ponciano , Lucas Pascotti Valem

Energy landscapes provide a conceptual framework for structure prediction, and a detailed understanding of their topological features is necessary to develop efficient methods for their exploration. The ability to visualise these surfaces…

计算物理 · 物理学 2021-11-16 Benjamin W. B. Shires , Chris J. Pickard

Learning discriminative image feature embeddings is of great importance to visual recognition. To achieve better feature embeddings, most current methods focus on designing different network structures or loss functions, and the estimated…

计算机视觉与模式识别 · 计算机科学 2019-08-15 Suichan Li , Dapeng Chen , Bin Liu , Nenghai Yu , Rui Zhao

Knowledge Graph Embedding (KGE) aims to represent entities and relations of knowledge graph in a low-dimensional continuous vector space. Recent works focus on incorporating structural knowledge with additional information, such as entity…

计算与语言 · 计算机科学 2018-08-14 Kai Wang , Yu Liu , Xiujuan Xu , Dan Lin

In the advent of big data era, interactive visualization of large data sets consisting of M*10^5+ high-dimensional feature vectors of length N (N ~ 10^3+), is an indispensable tool for data exploratory analysis. The state-of-the-art data…

机器学习 · 计算机科学 2019-02-05 Witold Dzwinel , Rafal Wcislo , Stan Matwin

In this paper, we propose a novel self-supervised representation learning by taking advantage of a neighborhood-relational encoding (NRE) among the training data. Conventional unsupervised learning methods only focused on training deep…

计算机视觉与模式识别 · 计算机科学 2019-08-29 Mohammad Sabokrou , Mohammad Khalooei , Ehsan Adeli

Motivated by applications in computer vision and databases, we introduce and study the Simultaneous Nearest Neighbor Search (SNN) problem. Given a set of data points, the goal of SNN is to design a data structure that, given a collection of…

数据结构与算法 · 计算机科学 2016-04-11 Piotr Indyk , Robert Kleinberg , Sepideh Mahabadi , Yang Yuan

Compressing large-scale neural networks is essential for deploying models on resource-constrained devices. Most existing methods adopt weight pruning or low-bit quantization individually, often resulting in suboptimal compression rates to…

机器学习 · 计算机科学 2025-10-13 Ziyi Wang , Nan Jiang , Guang Lin , Qifan Song

Semi-supervised learning (SSL) has recently received increased attention from machine learning researchers. By enabling effective propagation of known labels in graph-based deep learning (GDL) algorithms, SSL is poised to become an…

机器学习 · 计算机科学 2022-03-24 Alex Morehead , Watchanan Chantapakul , Jianlin Cheng