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769 Results Found

  • Article
  • Open Access
21 Citations
6,233 Views
33 Pages

A Topological Machine Learning Pipeline for Classification

  • Francesco Conti,
  • Davide Moroni and
  • Maria Antonietta Pascali

27 August 2022

In this work, we develop a pipeline that associates Persistence Diagrams to digital data via the most appropriate filtration for the type of data considered. Using a grid search approach, this pipeline determines optimal representation methods and pa...

(This article belongs to the Special Issue Computational Algebraic Topology and Neural Networks in Computer Vision)
  • Proceeding Paper
  • Open Access
1,938 Views
11 Pages

20 October 2025

Traditional deep learning methods for histopathological analysis suffer from a lack of interpretability, which limits their use in the clinic despite their high accuracy. This paper proposes a Topological Data Analysis (TDA) framework for interpretab...

(This article belongs to the Proceedings of 7th Edition of the International Conference on Advanced Technologies for Humanity (ICATH 2025))
  • Article
  • Open Access
2 Citations
3,492 Views
16 Pages

Natural Hydrocarbon Samples Classification by Topological Analysis Method

  • Andrey Fedotov,
  • Pavel Grishin,
  • Dmitriy Ivonin,
  • Mikhail Chernyavskiy and
  • Eugene Grachev

22 December 2021

Nowadays material science involves powerful 3D imaging techniques such as X-ray computed tomography that generates high-resolution images of different structures. These methods are widely used to reveal information about the internal structure of geo...

(This article belongs to the Special Issue Multiscale Rock-Physics Modeling)
  • Article
  • Open Access
10 Citations
1,744 Views
22 Pages

Impact of Loop Quantum Gravity on the Topological Classification of Quantum-Corrected Black Holes

  • Saeed Noori Gashti,
  • İzzet Sakallı,
  • Hoda Farahani,
  • Prabir Rudra and
  • Behnam Pourhassan

27 July 2025

We investigated the thermodynamic topology of quantum-corrected AdS-Reissner-Nordström black holes in Kiselev spacetime using non-extensive entropy formulation derived from Loop Quantum Gravity (LQG). Through systematic analysis, we examined how...

(This article belongs to the Special Issue Loop Quantum Gravity and Non-Perturbative Approaches to Quantum Cosmology, Second Edition)
  • Article
  • Open Access
3 Citations
3,201 Views
26 Pages

Human hands have the unique ability to classify material properties, such as hardness, using mechanoreceptors and tactile information. Previous studies have demonstrated hardness classification using Commercial Off-The-Shelf (COTS) sensors but lacked...

  • Article
  • Open Access
2 Citations
585 Views
25 Pages

Topological Machine Learning Framework for Phase Portrait Classification of Nonlinear Dynamical Systems

  • Syeda Irfa Fatima,
  • Waqar Hussain Shah,
  • Hasan Raza Mirza,
  • Cinthia Guadalupe Mata Ramírez and ,
  • Juan Hugo García López,
  • Héctor Eduardo Gilardi-Velázquez,
  • Rider Jaimes Reátegui and
  • Guillermo Huerta-Cuellar
  • + 3 authors+ 0 author

2 June 2026

Nonlinear dynamical systems exhibit complex behaviors such as periodicity and chaos, which are traditionally analyzed using time-series data. However, these approaches often fail to capture the intrinsic geometric structure of the system dynamics rep...

(This article belongs to the Special Issue Mathematical Modelling of Nonlinear Dynamical Systems, 2nd Edition)
  • Article
  • Open Access
652 Views
20 Pages

21 July 2026

Statistical classification is traditionally studied using probability, decision theory, information theory, and optimisation. We show that classification problems also possess a natural combinatorial and topological structure. Given a binary classifi...

(This article belongs to the Special Issue 15th Anniversary of Axioms: Geometry and Topology)
  • Article
  • Open Access
360 Views
22 Pages

28 August 2026

Fine-grained visual classification (FGVC) aims to distinguish highly similar subcategories, and its performance relies heavily on the accurate modeling of discriminative local parts and their structural relationships. However, existing Vision Transfo...

(This article belongs to the Section Computer Vision and Pattern Recognition)
  • Article
  • Open Access
21 Citations
5,007 Views
15 Pages

Classification of Power Facility Point Clouds from Unmanned Aerial Vehicles Based on Adaboost and Topological Constraints

  • Yuxuan Liu,
  • Mitko Aleksandrov,
  • Sisi Zlatanova,
  • Junjun Zhang and ,
  • Fan Mo and
  • Xiaojian Chen
  • + 1 author+ 0 author

30 October 2019

Machine learning algorithms can be well suited to LiDAR point cloud classification, but when they are applied to the point cloud classification of power facilities, many problems such as a large number of computational features and low computational...

(This article belongs to the Section Remote Sensors)
  • Feature Paper
  • Article
  • Open Access
1,437 Views
22 Pages

Many machine-learning tasks involve structured data whose geometry, local feature distributions, and global organization interact in ways that are not well captured by existing methods based on vectorization, graph metrics, or homological signatures....

  • Article
  • Open Access
2 Citations
4,522 Views
12 Pages

28 June 2022

The reaction of 2,2-dimethylpropane-1,3-diamine (dmpn) with an excess of concentrated aqueous hydrochloric acid yielded colorless crystals of 2,2-dimethylpropane-1,3-diaminium dichloride, dmpnH2Cl2 (1), in addition to small amounts of a monohydrate,...

  • Article
  • Open Access
6 Citations
4,932 Views
14 Pages

31 December 2020

Retinal artery–vein (AV) classification is a prerequisite for quantitative analysis of retinal vessels, which provides a biomarker for neurologic, cardiac, and systemic diseases, as well as ocular diseases. Although convolutional neural network...

(This article belongs to the Special Issue Recent Developments in Machine Learning Techniques for Medical Image Analysis)
  • Article
  • Open Access
5 Citations
4,923 Views
10 Pages

Characteristics and Classification of Topological Spatial Relations in 3-D Cadasters

  • Lili Fu,
  • Pengcheng Yin,
  • Gang Li,
  • Zhifeng Shi and ,
  • Youzhi Liu and
  • Jiyi Zhang
  • + 1 author+ 0 author

27 March 2018

The application of a 3-D topology to cadasters is becoming increasingly important as 3-D cadasters continue to develop and cadastral data applications increase. This study discusses spatial topological relations related to 3-D cadasters, the geometri...

  • Article
  • Open Access
1 Citations
2,693 Views
23 Pages

27 March 2021

Recent topology classification of 2D electron states induced by different homotopy classes of mappings of the planar Brillouin zone into Bloch space can be supplemented by a homotopy classification of various phases of multi-electron homotopy pattern...

(This article belongs to the Section Materials Physics)
  • Article
  • Open Access
1 Citations
2,624 Views
26 Pages

14 October 2025

We propose a nested ensemble learning framework that utilizes Topological Data Analysis (TDA) to extract and integrate topological features from graph data, with the goal of improving performance on classification and regression tasks. Our approach c...

(This article belongs to the Special Issue Feature Papers in Topology and Its Applications)
  • Article
  • Open Access
311 Views
27 Pages

3 June 2026

This paper develops a finite-state mathematical framework for structural stability and regime classification in discrete-time state–event–response systems whose effective transition structure is generated endogenously by state-dependent r...

  • Article
  • Open Access
776 Views
14 Pages

18 November 2025

In this paper, we study the topology of steady gradient Ricci solitons with nonnegative sectional curvature. We apply a characterization theorem for the fundamental group of a positively curved steady gradient Ricci soliton that admits a critical poi...

(This article belongs to the Section B: Geometry and Topology)
  • Article
  • Open Access
3 Citations
2,717 Views
13 Pages

6 July 2021

The need to identify wood by its anatomical features requires a detailed analysis of all the elements that make it up. This is a significant problem of structural wood science, the most general and complete solution of which is yet to be sought. In r...

(This article belongs to the Section Sustainable Engineering and Science)
  • Article
  • Open Access
10 Citations
3,504 Views
13 Pages

4 November 2021

Gastric cancer is a malignant tumor with high incidence. Computer-aided screening systems for gastric cancer pathological images can contribute to reducing the workload of specialists and improve the efficiency of disease diagnosis. Due to the high r...

(This article belongs to the Topic Medical Image Analysis)
  • Article
  • Open Access
2 Citations
2,353 Views
24 Pages

Searching by Topological Complexity: Lightweight Neural Architecture Search for Coal and Gangue Classification

  • Wenbo Zhu,
  • Yongcong Hu,
  • Zhengjun Zhu,
  • Wei-Chang Yeh and ,
  • Haibing Li,
  • Zhongbo Zhang and
  • Weijie Fu
  • + 2 authors+ 0 author

4 March 2024

Lightweight and adaptive adjustment are key research directions for deep neural networks (DNNs). In coal industry mining, frequent changes in raw coal sources and production batches can cause uneven distribution of appearance features, leading to con...

(This article belongs to the Special Issue Deep Learning and Adaptive Control, 2nd Edition)
  • Article
  • Open Access
24 Citations
5,441 Views
24 Pages

Gait Rhythm Dynamics for Neuro-Degenerative Disease Classification via Persistence Landscape- Based Topological Representation

  • Yan Yan,
  • Kamen Ivanov,
  • Olatunji Mumini Omisore,
  • Tobore Igbe and ,
  • Qiuhua Liu,
  • Zedong Nie and
  • Lei Wang
  • + 2 authors+ 0 author

3 April 2020

Neuro-degenerative disease is a common progressive nervous system disorder that leads to serious clinical consequences. Gait rhythm dynamics analysis is essential for evaluating clinical states and improving quality of life for neuro-degenerative pat...

(This article belongs to the Special Issue Advanced Machine Learning and Deep Networks for Psycho-Physiological Signals Processing, Modelling, and Classification)
  • Article
  • Open Access
2 Citations
8,550 Views
20 Pages

1 April 2014

In this paper, we propose a novel strategy for the synthesis and the classification of nonsmooth limit cycles and its bifurcations (named Non-Standard Bifurcations or Discontinuity Induced Bifurcations or DIBs) in n-dimensional piecewise-smooth dynam...

(This article belongs to the Special Issue Dynamical Systems)
  • Article
  • Open Access
501 Views
24 Pages

Screening Two-Dimensional Materials for Topological Candidates with Interpretable Machine Learning

  • Panteleimon Paschalis,
  • Filippos Sofos and
  • Theodoros E. Karakasidis

The development of quantum computers is based on discovering materials capable of protecting qubits from environmental noise and preserving quantum coherence. Topological materials have emerged as highly promising candidates for hosting fault-toleran...

(This article belongs to the Section Quantum Materials and Devices)
  • Article
  • Open Access
1 Citations
667 Views
21 Pages

A Novel Machine-Learning Based Method for Resolving Secondary Structure Topology in Medium-Resolution Cryo-EM Density Maps

  • Bahareh Behkamal,
  • Mohammad Parsa Etemadheravi,
  • Ali Mahmoodjanloo,
  • Amin Mansoori and ,
  • Mahmoud Naghibzadeh,
  • Kamal Al Nasr and
  • Mohammad Reza Saberi
  • + 2 authors+ 0 author

Medium-resolution cryo-electron microscopy (cryo-EM) density maps preserve substantial information about protein secondary-structure organization; however, accurately recovering the topology and connectivity of α-helices and β-strands rema...

(This article belongs to the Section Molecular Informatics)
  • Article
  • Open Access
5 Citations
3,079 Views
11 Pages

Graph-Based Motion Artifacts Detection Method from Head Computed Tomography Images

  • Yiwen Liu,
  • Tao Wen,
  • Wei Sun,
  • Zhenyu Liu and ,
  • Xiaoying Song,
  • Xuan He,
  • Shuo Zhang and
  • Zhenning Wu
  • + 3 authors+ 0 author

28 July 2022

Computed tomography (CT) images play an important role due to effectiveness and accessibility, however, motion artifacts may obscure or simulate pathology and dramatically degrade the diagnosis accuracy. In recent years, convolutional neural networks...

(This article belongs to the Special Issue Big Data Analytics and Intelligent Computation to Advance Novel Applications)
  • Article
  • Open Access
12 Citations
2,832 Views
19 Pages

7 September 2022

The development of industrial infrastructure in the Beijing–Tianjin–Hebei(BTH) region has been accompanied by a disorderly expansion of industrial zones and other inappropriate development. Accurate industrial heat source classification d...

(This article belongs to the Special Issue Applications of Remote Sensing in Environmental and Ecological Sciences)
  • Article
  • Open Access
4 Citations
5,733 Views
23 Pages

23 September 2024

Data augmentation is crucial for enhancing the performance of text classification models when labelled training data are scarce. For natural language processing (NLP) tasks, large language models (LLMs) are able to generate high-quality augmented dat...

(This article belongs to the Special Issue Emerging Theory and Applications in Natural Language Processing)
  • Communication
  • Open Access
911 Views
17 Pages

Accurate identification of road network intersections is essential for urban planning, autonomous navigation, and traffic safety analysis. However, standard approaches relying on local geometric attributes often overlook essential topological informa...

  • Article
  • Open Access
98 Citations
11,702 Views
17 Pages

7 December 2020

As one of the fundamental tasks in remote sensing (RS) image understanding, multi-label remote sensing image scene classification (MLRSSC) is attracting increasing research interest. Human beings can easily perform MLRSSC by examining the visual elem...

(This article belongs to the Special Issue Deep Learning in Remote Sensing: Sample Datasets, Algorithms and Applications)
  • Article
  • Open Access
1,076 Views
19 Pages

Classification and Prediction of Topological Insulators by Using the Density of States

  • Alejandro Díaz-Nadales,
  • Zulima Fernández-Muñiz,
  • Juan L. Fernández-Martínez and
  • Víctor M. García-Suárez

8 December 2025

In order to characterize topological insulators it is customary to use representations of the electronic structure, such as the band structure, where the energy of electrons is represented as a function of their momenta. Topological insulators are th...

(This article belongs to the Section E: Applied Mathematics)
  • Article
  • Open Access
1 Citations
707 Views
23 Pages

Single-phase-to-ground faults occur frequently in distribution networks, while traditional localization methods have limitations such as insufficient feature extraction and poor topological adaptability. To address these issues, this paper proposes a...

(This article belongs to the Topic Power System Protection)
  • Review
  • Open Access
98 Citations
18,802 Views
38 Pages

Electric Vehicle Charging Systems: Comprehensive Review

  • Aziz Rachid,
  • Hassan El Fadil,
  • Khawla Gaouzi,
  • Kamal Rachid and ,
  • Abdellah Lassioui,
  • Zakariae El Idrissi and
  • Mohamed Koundi
  • + 2 authors+ 0 author

26 December 2022

The high-voltage battery is a crucial element for EV traction systems. It is the primary energy source that must be regularly recharged to reach the autonomy declared by the manufacturer. Therefore, an EV charging system is required to ensure the bat...

(This article belongs to the Special Issue Challenges of Renewable Energy in Developing Countries)
  • Article
  • Open Access
2,817 Views
18 Pages

Comprehensive Geographic Networks Analysis: Statistical, Geometric and Algebraic Perspectives

  • Jiawei Zhu,
  • Xinqiang Ma,
  • Hemeng Yang,
  • Yan Li and ,
  • Chao Tao and
  • Haifeng Li
  • + 1 author+ 0 author

12 April 2022

Using complex network analysis methods to analyze the internal structure of geographic networks is a popular topic in urban geography research. Statistical analysis occupies a dominant position in the current research on geographic networks. This per...

  • Article
  • Open Access
8 Citations
12,439 Views
22 Pages

Classification of 5-HT1A Receptor Ligands on the Basis of Their Binding Affinities by Using PSO-Adaboost-SVM

  • Zhengjun Cheng,
  • Yuntao Zhang,
  • Changhong Zhou,
  • Wenjun Zhang and
  • Shibo Gao

29 July 2009

In the present work, the support vector machine (SVM) and Adaboost-SVM have been used to develop a classification model as a potential screening mechanism for a novel series of 5-HT1A selective ligands. Each compound is represented by calculated stru...

(This article belongs to the Section Physical Chemistry, Theoretical and Computational Chemistry)
  • Article
  • Open Access
15 Citations
3,471 Views
9 Pages

21 January 2020

We describe novel topological phases of isofrequency k-space surfaces in bianisotropic optical materials—tri- and tetrahyperbolic materials—which are induced by the introduction of chirality. This completes the classification of isofreque...

(This article belongs to the Special Issue 10th Anniversary of Applied Sciences: Invited Papers in "Optics and Lasers" Section)
  • Article
  • Open Access
14 Citations
3,018 Views
19 Pages

30 August 2022

Information entropy indices are widely used for numerical descriptions of chemical structures, though their applications to the processes are scarce. We have applied our original information entropy approach to filling fullerenes with a guest atom. T...

(This article belongs to the Section D: Chemistry: Symmetry/Asymmetry)
  • Article
  • Open Access
14 Citations
4,961 Views
22 Pages

Ventricular Fibrillation and Tachycardia Detection Using Features Derived from Topological Data Analysis

  • Azeddine Mjahad,
  • Jose V. Frances-Villora,
  • Manuel Bataller-Mompean and
  • Alfredo Rosado-Muñoz

19 July 2022

A rapid and accurate detection of ventricular arrhythmias is essential to take appropriate therapeutic actions when cardiac arrhythmias occur. Furthermore, the accurate discrimination between arrhythmias is also important, provided that the required...

(This article belongs to the Special Issue Real-Time Diagnosis Algorithms in Biomedical Applications and Decision Support Tools)
  • Review
  • Open Access
35 Citations
12,409 Views
25 Pages

27 October 2011

The benefits of terrestrial remote sensing in the environmental sciences are clear across a range of applications, and increasingly remote sensing analyses are being integrated into public health research. This integration has largely been in two are...

  • Review
  • Open Access
24 Citations
5,698 Views
37 Pages

11 January 2023

A photovoltaic (PV) system is composed of a PV panel, controller and boost converter. This review article presents a critical review, contributing to a better understanding of the interrelationship of all these internal devices in the PV system, thei...

(This article belongs to the Collection Review Papers in Solar Energy and Photovoltaic Systems)
  • Article
  • Open Access
3,144 Views
13 Pages

11 February 2022

The arrangement of vessels and their grouping is unique in most tree species. When observing tiny, microscopic samples of wood, the arrangement of the wood vessels forms a characteristic and repetitive pattern, which is largely determined by the tree...

(This article belongs to the Section Sustainable Engineering and Science)
  • Article
  • Open Access
647 Views
19 Pages

7 May 2026

A methodological approach to the quantitative description of the spatial relations between phases in multicomponent systems is developed, based on the comparison of Betti numbers of united phases. Two disjoint phases Xi and Xj in three-dimensional sp...

(This article belongs to the Special Issue Advances in Design Theory, Combinatorial Algebraic Geometry and Applications)
  • Article
  • Open Access
5 Citations
2,655 Views
17 Pages

12 December 2022

Water distribution systems (WDSs) are designed for supplying safe water under abnormal conditions. Therefore, the optimal design of WDSs should present a plan that satisfies the hydraulic constraint, pressure at the node, and flow rate of the pipe. T...

(This article belongs to the Special Issue Mathematical Modeling and Optimization)
  • Article
  • Open Access
54 Citations
7,945 Views
23 Pages

Breast Density Classification Using Local Quinary Patterns with Various Neighbourhood Topologies

  • Andrik Rampun,
  • Bryan William Scotney,
  • Philip John Morrow,
  • Hui Wang and
  • John Winder

This paper presents an extension of work from our previous study by investigating the use of Local Quinary Patterns (LQP) for breast density classification in mammograms on various neighbourhood topologies. The LQP operators are used to capture the t...

(This article belongs to the Special Issue Selected Papers from “MIUA 2017”)
  • Article
  • Open Access
3 Citations
4,708 Views
12 Pages

10 August 2020

Dimension reduction is often used for several procedures of analysis of high dimensional biomedical data-sets such as classification or outlier detection. To improve the performance of such data-mining steps, preserving both distance information and...

(This article belongs to the Section Databases and Data Structures)
  • Article
  • Open Access
11 Citations
3,570 Views
18 Pages

24 April 2025

In this study, we propose a robust artificial intelligence (AI) model for vibration monitoring of rotating equipment to support reliable operation across various industries, including manufacturing, power plants, and aerospace. The reliability and co...

(This article belongs to the Section Fault Diagnosis & Sensors)
  • Article
  • Open Access
259 Views
19 Pages

24 September 2026

Graph Convolutional Networks (GCNs) are widely used for graph-structured data, but graph pre-training still lacks simple structural objectives that can be applied when semantic annotations are unavailable. This paper proposes GTAP (Graph Topology-Awa...

  • Article
  • Open Access
62 Citations
6,004 Views
16 Pages

A Convolutional Autoencoder Topology for Classification in High-Dimensional Noisy Image Datasets

  • Emmanuel Pintelas,
  • Ioannis E. Livieris and
  • Panagiotis E. Pintelas

20 November 2021

Deep convolutional neural networks have shown remarkable performance in the image classification domain. However, Deep Learning models are vulnerable to noise and redundant information encapsulated into the high-dimensional raw input images, leading...

(This article belongs to the Collection Machine Learning and AI for Sensors)
  • Review
  • Open Access
1 Citations
1,961 Views
42 Pages

8 July 2026

Axial-flux permanent-magnet (AFPM) machines are becoming an increasingly promising solution for electromechanical systems requiring high power density. In particular, their use is expanding to electric vehicles (EVs), the aerospace industry, and adva...

  • Article
  • Open Access
2,367 Views
13 Pages

Traditional neural networks have limited capabilities in modeling the refined global and contextual semantics of emotional texts and usually ignore the dependencies between different emotional words. To address this limitation, this paper proposes a...

(This article belongs to the Topic Machine and Deep Learning)

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