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30 Results Found

  • Article
  • Open Access
9 Citations
5,204 Views
11 Pages

22 January 2022

There has been a lot of interest in sufficient dimension reduction (SDR) methodologies, as well as nonlinear extensions in the statistics literature. The SDR methodology has previously been motivated by several considerations: (a) finding data-driven...

(This article belongs to the Special Issue Applications of Information Theory in Statistics)
  • Article
  • Open Access
4 Citations
2,932 Views
16 Pages

A Multiple Subspaces-Based Model: Interpreting Urban Functional Regions with Big Geospatial Data

  • Jiawei Zhu,
  • Chao Tao,
  • Xin Lin,
  • Jian Peng and ,
  • Haozhe Huang,
  • Li Chen and
  • Qiongjie Wang
  • + 2 authors+ 0 author

Analyzing the urban spatial structure of a city is a core topic within urban geographical information science that has the ability to assist urban planning, site selection, location recommendation, etc. Among previous studies, comprehending the funct...

  • Article
  • Open Access
9 Citations
7,639 Views
22 Pages

On General Off-Shell Representations of World Line (1D) Supersymmetry

  • Charles F. Doran,
  • Tristan Hübsch,
  • Kevin M. Iga and
  • Gregory D. Landweber

3 February 2014

Every finite-dimensional unitary representation of the N-extended world line supersymmetry without central charges may be obtained by a sequence of differential transformations from a direct sum of minimal Adinkras, simple supermultiplets that are id...

(This article belongs to the Special Issue Supersymmetry 2014)
  • Article
  • Open Access
4 Citations
2,384 Views
21 Pages

Flood Risk Management-Level Analysis of Subway Station Spaces

  • Yan Li,
  • Xinxin Xu,
  • Shaoxuan Hou,
  • Xin Dang and ,
  • Zhuolun Li and
  • Yongwei Gong
  • + 1 author+ 0 author

5 April 2025

In recent years, heavy rainfall-induced flood incidents have occurred frequently in subway stations worldwide. Flooding in complex underground facilities, such as subway stations, can result in significant casualties and property damage. Therefore, i...

(This article belongs to the Special Issue Recent Advances in Flood Risk Assessment and Management)
  • Article
  • Open Access
21 Citations
8,070 Views
15 Pages

8 April 2015

Wireless sensor networks (WSNs) facilitate a new paradigm to structural identification and monitoring for civil infrastructure. Conventional structural monitoring systems based on wired sensors and centralized data acquisition systems are costly for...

(This article belongs to the Section Sensor Networks)
  • Article
  • Open Access
717 Views
21 Pages

28 February 2026

Federated learning (FL) enables collaborative model training without centralizing raw data, yet practical deployments remain vulnerable to security threats such as Byzantine model poisoning, stealthy backdoor implantation, and integrity attacks that...

(This article belongs to the Special Issue Security and Privacy in Distributed Machine Learning)
  • Article
  • Open Access
10 Citations
3,538 Views
17 Pages

11 February 2020

To interpret the nonlinear system identification of multi-degree-of-freedom vibrating structures with freeplay, an estimation procedure based on subspace method in time domain is developed in this paper. Two types of freeplay, namely, central freepla...

(This article belongs to the Section Mechanical Engineering)
  • Article
  • Open Access
697 Views
23 Pages

7 July 2026

Finger vein recognition (FVR) has significant potential in biometrics due to its high accuracy and intrinsic liveness detection capabilities. However, the increasingly stringent privacy regulations have presented severe data security challenges for t...

(This article belongs to the Section Intelligent Sensors)
  • Article
  • Open Access
10 Citations
2,933 Views
18 Pages

25 June 2023

With the steady improvement of advanced manufacturing processes and big data technologies, modern industrial systems have become large-scale. To enhance the sensitivity of fault detection (FD) and overcome the drawbacks of the centralized FD framewor...

(This article belongs to the Topic Artificial Intelligence in Smart Industrial Diagnostics and Manufacturing, 2nd Volume)
  • Article
  • Open Access
5 Citations
1,819 Views
22 Pages

14 July 2024

Computing cross-partial derivatives using fewer model runs is relevant in modeling, such as stochastic approximation, derivative-based ANOVA, exploring complex models, and active subspaces. This paper introduces surrogates of all the cross-partial de...

(This article belongs to the Section Statistical Theory and Methods)
  • Article
  • Open Access
36 Citations
8,121 Views
14 Pages

31 May 2023

Over the last decades, most agricultural land has been converted into residential colonies to accommodate the rapid population expansion. Population growth and urbanization result in negative consequences on the environment. Such land has experienced...

(This article belongs to the Special Issue Urban Form and the Urban Heat Island Effect)
  • Article
  • Open Access
2 Citations
2,237 Views
19 Pages

30 June 2021

In this study, we develop quantum measurement theory for quantum systems described by C∗-algebras. This is the first step to establish measurement theory for interacting quantum fields with off-shell momenta. Unlike quantum mechanics (i.e., quantum s...

(This article belongs to the Special Issue Quantum Fields and Off-Shell Sciences)
  • Article
  • Open Access
12 Citations
3,327 Views
18 Pages

A Fast Preconditioned Semi-Implicit Difference Scheme for Strongly Nonlinear Space-Fractional Diffusion Equations

  • Yu-Yun Huang,
  • Xian-Ming Gu,
  • Yi Gong,
  • Hu Li and ,
  • Yong-Liang Zhao and
  • Bruno Carpentieri
  • + 1 author+ 0 author

In this paper, we propose a semi-implicit difference scheme for solving one-dimensional nonlinear space-fractional diffusion equations. The method is first-order accurate in time and second-order accurate in space. It uses a fractional central differ...

(This article belongs to the Special Issue Novel Numerical Solutions of Fractional PDEs)
  • Article
  • Open Access
3 Citations
2,865 Views
11 Pages

30 December 2021

A number of pennate diatom genera typically have teratogenic deformations of their siliceous frustules due to the effects of environmental stress, such as high concentrations of heavy metals and low pH. However, the quantitative assessment of these d...

(This article belongs to the Special Issue Fluctuating Asymmetry as a Measure of Stress: Influence of Natural and Anthropogenic Factors)
  • Article
  • Open Access
3 Citations
3,822 Views
20 Pages

Classification of Skin Lesion Images Using Artificial Intelligence Methodologies through Radial Fourier–Mellin and Hilbert Transform Signatures

  • Esperanza Guerra-Rosas,
  • Luis Felipe López-Ávila,
  • Esbanyely Garza-Flores,
  • Claudia Andrea Vidales-Basurto and
  • Josué Álvarez-Borrego

18 October 2023

This manuscript proposes the possibility of concatenated signatures (instead of images) obtained from different integral transforms, such as Fourier, Mellin, and Hilbert, to classify skin lesions. Eight lesions were analyzed using some algorithms of...

(This article belongs to the Special Issue New Trends in Machine Learning for Biomedical Data Analysis)
  • Technical Note
  • Open Access
4 Citations
2,708 Views
16 Pages

1 December 2024

With the continuous advancement of electromagnetic countermeasures, new types of interference signals (e.g., multi-polarization suppression interference) pose a significant threat to conventional Global Navigation Satellite System (GNSS) services, ev...

  • Article
  • Open Access
16 Citations
3,689 Views
22 Pages

Due to its advantages of large transportation volume and low transportation cost, container shipping has become an important transportation mode in current international trade. The recovery of the shipping industry in 2021 and the signing of RCEP mak...

(This article belongs to the Section Ocean Engineering)
  • Article
  • Open Access
1,333 Views
23 Pages

17 February 2026

Residuals play a central role in linear regression, yet their geometry is often hidden by inverse- and pseudoinverse-based formulas. We develop a rank-aware framework for residual projection that makes the underlying orthogonality explicit. When the...

(This article belongs to the Special Issue AI-Driven Computational Methods: Theories, Algorithms and Applications)
  • Article
  • Open Access
3,497 Views
13 Pages

7 October 2021

In 1933, Kolmogorov synthesized the basic concepts of probability that were in general use at the time into concepts and deductions from a simple set of axioms that said probability was a σ-additive function from a boolean algebra of events into [0,...

(This article belongs to the Special Issue The Close Connection between Economics and Quantum Theory: A Topological Exploration)
  • Feature Paper
  • Article
  • Open Access
1 Citations
2,229 Views
18 Pages

Randomized Simplicial Hessian Update

  • Árpád Bűrmen,
  • Tadej Tuma and
  • Jernej Olenšek

27 July 2021

Recently, a derivative-free optimization algorithm was proposed that utilizes a minimum Frobenius norm (MFN) Hessian update for estimating the second derivative information, which in turn is used for accelerating the search. The proposed update formu...

(This article belongs to the Special Issue Optimization Theory and Applications)
  • Article
  • Open Access
3 Citations
1,558 Views
30 Pages

27 September 2025

This paper addresses the challenge of segmenting consumer behavior in contexts characterized by both numerical regularities and semantic variability. Traditional models, such as RFM-based segmentation, capture the transactional dimension but neglect...

(This article belongs to the Special Issue Recent Advances in Numerical Algorithms and Their Applications)
  • Article
  • Open Access
991 Views
19 Pages

The AMEE-PPI Method to Extract Typical Outcrop Endmembers from GF-5 Hyperspectral Images

  • Lin Hu,
  • Jiankai Hu,
  • Shu Gan,
  • Xiping Yuan and ,
  • Yu Lu,
  • Hailong Zhao and
  • Guang Han
  • + 2 authors+ 0 author

4 October 2025

Mixed pixels remain a central obstacle to reliable endmember extraction from hyperspectral imagery. We present AMEE–PPI, a hybrid method that embeds the Pure Pixel Index (PPI) within morphological structuring elements and propagates spectral pu...

(This article belongs to the Section Remote Sensors)
  • Feature Paper
  • Article
  • Open Access
2 Citations
1,203 Views
25 Pages

18 January 2026

High-dimensional surrogate modeling with limited high-fidelity data poses a major challenge in uncertainty quantification. Classical supervised dimension reduction methods often fail in this setting due to insufficient accurate observations, while lo...

(This article belongs to the Special Issue Machine Learning and Statistical Learning with Applications)
  • Article
  • Open Access
4 Citations
4,081 Views
17 Pages

Insights from the P Wave Travel Time Tomography in the Upper Mantle Beneath the Central Philippines

  • Huiyan Shi,
  • Tonglin Li,
  • Rui Sun,
  • Gongbo Zhang and ,
  • Rongzhe Zhang and
  • Xinze Kang
  • + 1 author+ 0 author

23 June 2021

In this paper, we present a high resolution 3-D tomographic model of the upper mantle obtained from a large number of teleseismic travel time data from the ISC in the central Philippines. There are 2921 teleseismic events and 32,224 useful relative t...

(This article belongs to the Special Issue Earthquake Ground Motion Observation and Modelling)
  • Article
  • Open Access
4 Citations
3,104 Views
14 Pages

7 November 2023

Protein is one of the primary biochemical macromolecular regulators in the compartmental cellular structure, and the subcellular locations of proteins can therefore provide information on the function of subcellular structures and physiological envir...

(This article belongs to the Special Issue Multi-Modal Data Sensing and Processing)
  • Article
  • Open Access
29 Citations
4,306 Views
25 Pages

6 November 2021

The application of machine learning (ML) algorithms for processing remote sensing data is momentous, particularly for mapping hydrothermal alteration zones associated with porphyry copper deposits. The unsupervised Dirichlet Process (DP) and the supe...

(This article belongs to the Special Issue Multispectral Remote Sensing Satellite Data for Mineral and Hydrocarbon Exploration: Big Data Processing and Deep Fusion Learning Techniques)
  • Feature Paper
  • Article
  • Open Access
17 Citations
5,329 Views
19 Pages

26 December 2022

Surface transient electromagnetic (TEM) data with large transmitter loops for deep mineral exploration are often complicated by the non-trivial coupling between extended sources and arbitrarily oriented geological targets. This case study reports a T...

(This article belongs to the Special Issue Using Geophysical Inversion for Mineral Exploration: Methods and Applications)
  • Article
  • Open Access
5 Citations
1,042 Views
23 Pages

Multi-dimensional classification (MDC), in which the training data are concurrently associated with numerous label variables across many dimensions, has garnered significant interest recently. Most of the current MDC methods are based on the framewor...

(This article belongs to the Special Issue Computational Intelligence and Machine Learning: Models and Applications: 2nd Edition)
  • Article
  • Open Access
12 Citations
4,201 Views
25 Pages

This paper surveys recent progress in our search for an appropriate internal space algebra for the standard model (SM) of particle physics. After a brief review of the existing approaches, we start with the Clifford algebras involving operators of le...

(This article belongs to the Section Mathematical Physics)
  • Article
  • Open Access
420 Views
29 Pages

PriSparK: Privacy-Preserving and Communication-Efficient Federated Spiking Neural Learning via Event-Sparse Adaptive Aggregation

  • Xin Liu,
  • Honglei Yao,
  • Shanjie Xu,
  • Yuhui Jin and ,
  • Zijie Pan,
  • Jiamin Zheng and
  • Li Tan
  • + 2 authors+ 0 author

Federated learning enables collaborative model training without centralizing private data, yet its deployment on edge devices remains constrained by communication overhead, heterogeneous data distributions, and privacy leakage from shared model updat...

(This article belongs to the Special Issue Novel Methods Applied to Security and Privacy Problems in Future Networking Technologies, Volume II)