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1,626 Results Found

  • Article
  • Open Access
173 Views
28 Pages

On the Complexity of Encoded Nominal Data

  • Kyle Erwin and
  • Andries Engelbrecht

1 October 2026

Categorical data is a fundamental element of real-world tabular classification problems. In typical machine learning workflows, encoding strategies are used to convert categorical data into numerical representations. These encoding strategies vary in...

(This article belongs to the Special Issue Machine Learning for Predictive Analytics: Models, Applications, and Challenges)
  • Article
  • Open Access

27 October 2026

Attribute reduction is a fundamental problem in rough set theory that seeks a minimal subset of condition attributes that preserve the discernibility capability of the original decision system. Traditional heuristic methods—greedy forward selec...

(This article belongs to the Section Multidisciplinary Applications)
  • Article
  • Open Access
2,138 Views
24 Pages

Online Asynchronous Learning over Streaming Nominal Data

  • Hongrui Li,
  • Shengda Zhuo,
  • Lin Li,
  • Jiale Chen,
  • Tianbo Wang,
  • Jun Tang,
  • Shaorui Liu and
  • Shuqiang Huang

Online learning has become increasingly prevalent in real-world applications, where data streams often comprise heterogeneous feature types—both nominal and numerical—and labels may not arrive synchronously with features. However, most ex...

  • Article
  • Open Access
58 Citations
8,800 Views
12 Pages

This paper focuses on the factors influencing the language of determiners in nominal constructions in two sets of bilingual data: Spanish/English from Miami and Spanish/English creole from Nicaragua. Previous studies (Liceras et al. 2008; Moro Quinta...

(This article belongs to the Special Issue Clausal and Nominal Complements in Monolingual and Bilingual Grammars)
  • Feature Paper
  • Article
  • Open Access
148 Citations
15,223 Views
12 Pages

Real-world datasets are heavily skewed where some classes are significantly outnumbered by the other classes. In these situations, machine learning algorithms fail to achieve substantial efficacy while predicting these underrepresented instances. To...

(This article belongs to the Collection Feature Paper Collection in Applied System Innovation)
  • Article
  • Open Access
2 Citations
3,060 Views
20 Pages

The paper’s primary purpose is to better monitor shocks; therefore, reliable scientific methods should be used to predict, monitor, and implement those events. In this paper, tourism prices are studied as an economic, I(2) and social phenomenon...

(This article belongs to the Special Issue Predictive Modeling for Economic and Financial Data)
  • Article
  • Open Access
632 Views
32 Pages

Adaptive Sparse Clustering of Mixed Data Using Azzalini-Encoded Ordinal Variables

  • Ismail Arjdal,
  • Mohamed Alahiane,
  • Echarif Elharfaoui and
  • Mustapha Rachdi

7 December 2025

In this paper, we propose a novel sparse clustering method designed for high-dimensional mixed-type data, integrating Azzalini’s score-based encoding for ordinal variables. Our approach aims to retain the inherent nature of each variable type&m...

(This article belongs to the Special Issue Stochastic Modeling and Optimization Techniques)
  • Article
  • Open Access
1,086 Views
18 Pages

The thematic processing of pseudocolor composite images, especially those created from remote sensing data, is of considerable interest. The set of spectral classes comprising such images is typically described by a nominal scale, meaning the absence...

(This article belongs to the Section Image and Video Processing)
  • Article
  • Open Access
364 Citations
35,259 Views
27 Pages

Nominal 30-m Cropland Extent Map of Continental Africa by Integrating Pixel-Based and Object-Based Algorithms Using Sentinel-2 and Landsat-8 Data on Google Earth Engine

  • Jun Xiong,
  • Prasad S. Thenkabail,
  • James C. Tilton,
  • Murali K. Gumma,
  • Pardhasaradhi Teluguntla,
  • Adam Oliphant,
  • Russell G. Congalton,
  • Kamini Yadav and
  • Noel Gorelick

19 October 2017

A satellite-derived cropland extent map at high spatial resolution (30-m or better) is a must for food and water security analysis. Precise and accurate global cropland extent maps, indicating cropland and non-cropland areas, are starting points to d...

(This article belongs to the Collection Google Earth Engine Applications)
  • Article
  • Open Access
1 Citations
2,131 Views
13 Pages

Partial Asymmetry Measures for Square Contingency Tables

  • Takuma Ishihara,
  • Kouji Yamamoto,
  • Kouji Tahata and
  • Sadao Tomizawa

17 September 2022

In square contingency table analysis, we consider a partial measure that represents the degree of departure from symmetry for each of several pairs. It may be useful to pool the values of the measure into a single summary measure of partial asymmetry...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
5 Citations
9,041 Views
18 Pages

10 February 2010

Surveys can be a rich source of information. However, the extraction of underlying variables from the analysis of mixed categoric and numeric survey data is fraught with complications when using grouping techniques such as clustering or ordination. H...

  • Article
  • Open Access
286 Views
27 Pages

26 September 2026

Hard pegs are said to import price stability; floats, to absorb external shocks. Both claims are comparative, yet most evidence comes from single-regime settings. This paper estimates regime differences in inflation transmission on an unbalanced annu...

(This article belongs to the Section Macroeconomics, Monetary Economics, and Financial Markets)
  • Article
  • Open Access
6 Citations
6,173 Views
14 Pages

18 June 2021

Secure communication is becoming an urgent need in a digital world where tera bytes of sensitive information are sent back and forth over public networks. In this paper, we combine the power of both encryption and Steganography to build a secure chan...

  • Article
  • Open Access
50 Citations
7,626 Views
17 Pages

Genetic and Real-World Clinical Data, Combined with Empirical Validation, Nominate Jak-Stat Signaling as a Target for Alzheimer’s Disease Therapeutic Development

  • Alejo J. Nevado-Holgado,
  • Elena Ribe,
  • Laura Thei,
  • Laura Furlong,
  • Miguel-Angel Mayer,
  • Jie Quan,
  • Jill C. Richardson,
  • Jonathan Cavanagh,
  • NIMA Consortium and
  • Simon Lovestone

8 May 2019

As genome-wide association studies (GWAS) have grown in size, the number of genetic variants that have been associated per disease has correspondingly increased. Despite this increase in the number of single-nucleotide polymorphisms (SNPs) identified...

(This article belongs to the Special Issue Key Signalling Molecules in Aging and Neurodegeneration)
  • Article
  • Open Access
1 Citations
15,466 Views
21 Pages

Long-Run Trade Relationship between the U.S. and Canada: The Case of the Canadian Dollar with the U.S. Dollar

  • Ikhlaas Gurrib,
  • Firuz Kamalov,
  • Osama Atayah,
  • Dalia Hemdan and
  • Olga Starkova

This study investigates the long-run relationship between the U.S. dollar and the Canadian dollar by analyzing the bilateral exchange rate induced by nominal and real shocks. The methodology centers on a structural vector autoregressive (SVAR) model,...

(This article belongs to the Section Financial Markets)
  • Article
  • Open Access
3 Citations
3,518 Views
32 Pages

Differential object marking (DOM) interacts with nominal structure in complex ways across Romance languages. For example, in Spanish, it has been claimed to ban bare nominals. For Romanian, in turn, two main restrictions have been discussed: (i) ban...

(This article belongs to the Special Issue Variation and Optionality in Determiner Systems across the World Languages)
  • Article
  • Open Access
1 Citations
2,497 Views
16 Pages

Two main perspectives exist regarding the interaction between fiscal deficits and expansionary monetary policy. The first perspective argues that fiscal deficits raise interest rates, thereby increasing interest payments and complicating monetary sta...

(This article belongs to the Special Issue Monetary Policy and Debt)
  • Article
  • Open Access
1 Citations
4,093 Views
25 Pages

Gender and Nominal Power in Multilateral Bargaining

  • Nicola Maaser,
  • Fabian Paetzel and
  • Stefan Traub

17 January 2022

In many bargaining situations, the distribution of seats or voting weights does not accurately reflect bargaining power. Maaser, Paetzel and Traub (Games and Economic Behavior, 2019) conducted an experiment to investigate the effect of such nominal p...

(This article belongs to the Special Issue Weighted Majority Voting Games)
  • Article
  • Open Access
2 Citations
2,576 Views
13 Pages

Popularity and Entropy in Friendship and Enmity Networks in Classrooms

  • Diego B. Sánchez-Espinosa,
  • Eric Hernández-Ramírez and
  • Marcelo del Castillo-Mussot

23 June 2023

Looking for regular statistical trends of relations in schools, we constructed 42 independent weighted directed networks of simultaneous friendship and animosity from surveys we made in the Mexico City Metropolitan area in classrooms with students of...

(This article belongs to the Special Issue Complex Systems Approach to Social Dynamics)
  • Article
  • Open Access
221 Views
28 Pages

14 September 2026

As inverter-based renewable generation increases, load modeling from ambient measurements is important for power-system stability assessment. Under ambient conditions, voltage and frequency variations are small, whereas time-varying nominal power can...

(This article belongs to the Special Issue Modeling, Simulation and Optimization of Power Systems: 2nd Edition)
  • Article
  • Open Access
12 Citations
6,450 Views
10 Pages

24 October 2022

Strain wave gears, also known as harmonic drives, are employed in a wide range of fields such as robotics and aerospace, where light weights, precision, and reliability are essential to the correct execution of the tasks. For this reason, their under...

(This article belongs to the Section Precision Actuators)
  • Article
  • Open Access
12 Citations
4,765 Views
24 Pages

A Method to Reduce Non-Nominal Troposphere Error

  • Zhipeng Wang,
  • Pumin Xin,
  • Rui Li and
  • Shujing Wang

31 July 2017

Under abnormal troposphere, Ground-Based Augmentation System (GBAS) is unable to eliminate troposphere delay, resulting in non-nominal troposphere error. This paper analyzes the troposphere meteorological data of eight International GNSS Monitoring A...

(This article belongs to the Section Remote Sensors)
  • Communication
  • Open Access
7 Citations
4,415 Views
10 Pages

21 November 2020

Given the complexity of real-world datasets, it is difficult to present data structures using existing deep learning (DL) models. Most research to date has concentrated on datasets with only one type of attribute: categorical or numerical. Categorica...

(This article belongs to the Special Issue Interpretable Deep Learning in Electronics, Computer Science and Medical Imaging)
  • Article
  • Open Access
881 Views
17 Pages

Glucocorticoid Receptor Gene Polymorphisms and Femoral Head Osteonecrosis

  • De-Yi Liu,
  • I-Chang Lai,
  • Nien-En Ku,
  • Chang-Yuan Hsu,
  • Chu-Ching Wang,
  • Shih-Chan Hsu,
  • Jih-Yang Ko and
  • Shu-Jui Kuo

31 May 2026

Background and Objectives: Non-traumatic osteonecrosis of the femoral head (ONFH) is a multifactorial disorder influenced by both environmental and genetic factors. The nuclear receptor subfamily 3 group C member 1 (NR3C1) gene encodes the glucocorti...

(This article belongs to the Section Orthopedics)
  • Article
  • Open Access
2 Citations
3,230 Views
19 Pages

Clustering Mixed-Type Data via Dirichlet Process Mixture Model with Cluster-Specific Covariance Matrices

  • Nurul Afiqah Burhanuddin,
  • Kamarulzaman Ibrahim,
  • Hani Syahida Zulkafli and
  • Norwati Mustapha

8 June 2024

Many studies have shown successful applications of the Dirichlet process mixture model (DPMM) for clustering continuous data. Beyond continuous data, in practice, one can expect to see different data types, including ordinal and nominal data. Existin...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
5 Citations
1,929 Views
28 Pages

Simplified Formula for Nominal Force at Critical Welds in the Lower Chord Node of a Novel Bracket-Crane Truss Structure

  • He Zhao,
  • Shuaiyu Li,
  • Zhongyan Guo,
  • Chao Dong,
  • Jiangtao Fan,
  • Lipeng Tao and
  • Wenyuan Zhang

In the realm of practical engineering, engineers commonly employ rod system models for modeling and analysis, which consequently precludes them from calculating the nominal forces exerted on welds at intricate nodes. This paper addresses the design c...

(This article belongs to the Section Building Structures)
  • Article
  • Open Access
18 Citations
6,286 Views
18 Pages

The Basis for Reliability-Based Mechanical Properties of Structural Aluminium Alloys

  • Davor Skejić,
  • Tihomir Dokšanović,
  • Ivan Čudina and
  • Federico M. Mazzolani

14 May 2021

Adequate knowledge of mechanical properties and their statistical description is the basis for performing reliable verification of design methods and design of structures in general. The probabilistic design approach implemented in Eurocodes requires...

(This article belongs to the Section Civil Engineering)
  • Communication
  • Open Access
4 Citations
5,200 Views
11 Pages

Variational AutoEncoder to Identify Anomalous Data in Robots

  • Luigi Pangione,
  • Guy Burroughes and
  • Robert Skilton

For robotic systems involved in challenging environments, it is crucial to be able to identify faults as early as possible. In challenging environments, it is not always possible to explore all of the fault space, thus anomalous data can act as a bro...

(This article belongs to the Special Issue Advances in Robots for Hazardous Environments in the UK)
  • Article
  • Open Access
1 Citations
2,728 Views
25 Pages

13 March 2023

This study explored the buckling performance of bi-segment pressure hulls under external pressure. We fabricated bi-segment pressure hulls from bi-segment cylindrical preforms by using free bulging. The cylindrical preforms had a nominal thickness of...

(This article belongs to the Section Corrosion and Protection)
  • Article
  • Open Access
3 Citations
1,211 Views
16 Pages

Determining Rotor Blade Multi-Mode Vibration Components

  • Jerzy Manerowski,
  • Romuald Rządkowski,
  • Leszek Kubitz and
  • Krzysztof Dominiczak

28 April 2025

The new algorithm presented in this paper determines the multi-mode blade vibration components when the time of blade arrival is known from an experiment. The validation of the algorithm is presented in a numerical simulation, which assumes the blade...

  • Article
  • Open Access
5 Citations
3,325 Views
21 Pages

Agreement Asymmetries with Adjectives in Heritage Greek

  • Artemis Alexiadou,
  • Vasiliki Rizou and
  • Foteini Karkaletsou

Research on different populations of heritage speakers (HSs) has demonstrated that these speakers (i) frequently produce fewer adjectives, and (ii) produce more errors in nominal concord than in subject–verb agreement. The first point, (i), has...

(This article belongs to the Special Issue Syntactic Variation and Change of Heritage Languages)
  • Article
  • Open Access
1 Citations
3,452 Views
17 Pages

Study on LT Accuracy Improvement by Calibration Based on Network Measurements

  • Jesús Velázquez,
  • Javier Conte,
  • Ana Cristina Majarena and
  • Jorge Santolaria

10 November 2021

Laser trackers (LT) are widely used to calibrate other machines. Nevertheless, very little is known about calibrating an LT. There are some standards that allow us to evaluate the LT performance. However, they require specialized equipment. A calibra...

(This article belongs to the Section Physical Sensors)
  • Article
  • Open Access
2,129 Views
18 Pages

This article is devoted to the study of syntactic and pragmatic functions of the vocative and direct address constructions. Since the direct address in Latvian, in addition to the vocative, also permits the nominative and accusative, this article exa...

  • Article
  • Open Access
3 Citations
3,454 Views
17 Pages

7 August 2018

The Joint Precision Approach Landing System (JPALS) addresses tropospheric errors through double-difference and tropospheric model correction. Large residuals occur with two types of tropospheric anomalies: the vertical duct and horizontal non-nomina...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
1,112 Views
22 Pages

Structure Influences Case Processing: Electrophysiological Insights from Hindi Light Verb Constructions

  • Anna Merin Mathew,
  • R. Muralikrishnan,
  • Mahima Gulati and
  • Kamal Kumar Choudhary

31 January 2026

Background: Case marking serves as a crucial cue in sentence processing, enabling the prediction of upcoming arguments, thematic roles, and event structure. Cross-linguistic studies have revealed language-specific variations in case processing, with...

(This article belongs to the Special Issue Language Perception and Processing)
  • Article
  • Open Access
32 Citations
8,152 Views
21 Pages

Classification and Analysis of Go-Arounds in Commercial Aviation Using ADS-B Data

  • Satvik G. Kumar,
  • Samantha J. Corrado,
  • Tejas G. Puranik and
  • Dimitri N. Mavris

9 October 2021

Go-arounds are a necessary aspect of commercial aviation and are conducted after a landing attempt has been aborted. It is necessary to conduct go-arounds in the safest possible manner, as go-arounds are the most safety-critical of operations. Recent...

(This article belongs to the Special Issue Machine Learning Applications in Aviation Safety)
  • Article
  • Open Access
3 Citations
3,133 Views
21 Pages

Rare Chromosomal Uniformity in Black Flies of the Simulium striatum Species Group (Diptera: Simuliidae)

  • Peter H. Adler,
  • Sergey Vlasov,
  • Yao-Te Huang,
  • Upik K. Hadi,
  • Khamla Inkhavilay,
  • Banchai Malavong,
  • Varvara Topolenko,
  • Bhuvadol Gomontean,
  • Waraporn Jumpato and
  • Pairot Pramual
  • + 6 authors

10 May 2025

We conducted a comparative chromosomal analysis of 10 nominal species and 3 unidentified species in the Simulium striatum group from six countries. A total of 66 chromosomal rearrangements were found, of which 78.8% were inversions. The group is defi...

(This article belongs to the Special Issue Diptera Diversity: Systematics, Phylogeny and Evolution)
  • Article
  • Open Access
1 Citations
1,172 Views
26 Pages

EEG-Based Decoding of Neural Mechanisms Underlying Impersonal Pronoun Resolution

  • Mengyuan Zhao,
  • Hanqing Wang,
  • Yingyi Qiu,
  • Wenlong Wu,
  • Han Liu,
  • Yilin Chang,
  • Xinlin Shao,
  • Yulin Yang and
  • Zhong Yin

10 December 2025

Pronoun resolution is essential for language comprehension, yet the neural mechanisms underlying this process remain poorly characterized. Here, we investigate the neural dynamics of impersonal pronoun processing using electroencephalography combined...

(This article belongs to the Special Issue Machine Learning Techniques for Brain Data Analysis Using EEG, EMG or Image Data)
  • Article
  • Open Access
10,723 Views
19 Pages

Western Austronesian languages, like Tagalog, have unique, complex voice systems that require the correct combinations of verbal and nominal markers, raising many questions about their learnability. In this article, we review the experimental and obs...

(This article belongs to the Special Issue Errors of Commission in Child Language)
  • Article
  • Open Access
338 Views
47 Pages

An Uncertainty-Aware Decision-Support System for Composite-Property Prediction with Physically Admissible Conformal Intervals

  • Magzhan Sarsenbay,
  • Serik Zhuzbayev,
  • Gulmira Baenova,
  • Gulnur Alkhanova,
  • Rozamgul Niyazova and
  • Askar Bakytzhan

24 September 2026

Machine-learning surrogates predict composite properties but report no calibrated reliability and may violate physics. Bound-constrained conformal prediction confines intervals to physical bounds but assumes them exact. This paper keeps the corridor...

(This article belongs to the Special Issue AI-Driven Decision Intelligence: Machine Learning for Optimization and Prediction)
  • Article
  • Open Access

An Open Sentinel-1 Uncompressed SAR Dataset with FDBAQ Compression Performance Benchmarks

  • Mario Azcueta,
  • Ignacio Navas-Traver,
  • Andrea Recchia and
  • Pietro Guccione

27 October 2026

A dataset of uncompressed synthetic aperture radar (SAR) raw data has been acquired with Sentinel-1C and Sentinel-1D, providing, for the first time, complex raw data representative of the instrument signal prior to lossy onboard compression. Comprise...

(This article belongs to the Section Earth Observation Data)
  • Article
  • Open Access
8 Citations
3,339 Views
21 Pages

PEMFC Electrochemical Degradation Analysis of a Fuel Cell Range-Extender (FCREx) Heavy Goods Vehicle after a Break-In Period

  • Jia-Di Yang,
  • Theo Suter,
  • Jason Millichamp,
  • Rhodri E. Owen,
  • Wenjia Du,
  • Paul R. Shearing,
  • Dan J. L. Brett and
  • James B. Robinson

17 June 2024

With the increasing focus on decarbonisation of the transport sector, it is imperative to consider routes to electrify vehicles beyond those achievable using lithium-ion battery technology. These include heavy goods vehicles and aerospace application...

(This article belongs to the Special Issue Advances in Proton Exchange Membrane Fuel Cell)
  • Article
  • Open Access
1 Citations
4,103 Views
18 Pages

Can Groups Improve Expert Economic and Financial Forecasts?

  • Warwick Smith,
  • Anca M. Hanea and
  • Mark A. Burgman

2 August 2022

Economic and financial forecasts are important for business planning and government policy but are notoriously challenging. We take advantage of recent advances in individual and group judgement, and a data set of economic and financial forecasts com...

  • Article
  • Open Access

25 October 2026

UAVs come in many different platforms such as quadcopters, hexacopters, hybrid models, etc., with diverse attribute types which can be characterised as heterogeneous data. In MCDM, heterogeneous datasets pose several challenges, as most methods are d...

(This article belongs to the Section Artificial Intelligence in Drones (AID))
  • Article
  • Open Access
14 Citations
3,869 Views
14 Pages

In-Cylinder Pressure Estimation from Rotational Speed Measurements via Extended Kalman Filter

  • Renato Quartullo,
  • Andrea Garulli,
  • Antonio Giannitrapani,
  • Ryota Minamino and
  • Giovanni Vichi

27 April 2023

Real-time estimation of the in-cylinder pressure of combustion engines is crucial to detect failures and improve the performance of the engine control system. A new estimation scheme is proposed based on the Extended Kalman Filter, which exploits mea...

(This article belongs to the Section Physical Sensors)
  • Article
  • Open Access
617 Views
23 Pages

Gut Microbiota, Metabolic Markers, and Systemic Inflammation in Young Women with Self-Reported Rosacea: An Exploratory Cross-Sectional Study

  • Paola Pavačić,
  • Emanuela Krpan,
  • Karlo Zeman,
  • Romia Gregorović,
  • Sara Kralj,
  • Željana Bolanča,
  • Valentina Borko,
  • Helena Čičak,
  • Ana-Marija Liberati Pršo and
  • Andrija Karačić
  • + 1 author

27 May 2026

Background: Rosacea is a chronic inflammatory dermatosis with emerging links to the gut–skin axis, yet integrative data connecting fecal microbiota with metabolic and immune parameters remain scarce. Methods: Within a cohort of Croatian women (...

(This article belongs to the Section Dermatology)
  • Article
  • Open Access
3 Citations
1,543 Views
14 Pages

Socioemotional relationships significantly influence students’ learning, development, and school well-being. This study explored gender differences in sympathy and antipathy based on data originally gathered via a digital platform primarily des...

(This article belongs to the Special Issue School Well-Being in the Digital Era)
  • Article
  • Open Access
16 Citations
5,654 Views
19 Pages

4 February 2024

Accurate determination of fishing effort from Automatic Identification System (AIS) data improves catch per unit effort (CPUE) estimation and precise spatial management. By combining AIS data with catch information, a weighted distribution method is...

  • Article
  • Open Access
658 Views
17 Pages

This study proposes a transformed two-part bootstrap confidence interval (TTB-CI) for zero-inflated count data. The method combines a standard zero-inflated mixture formulation, parametric bootstrap, and monotone transformations to improve inference...

(This article belongs to the Special Issue Feature Papers in AppliedMath)
  • Article
  • Open Access
24 Citations
7,303 Views
18 Pages

In this work, we explored the feasibility of using a transformer-based time-series forecasting architecture, known as the Temporal Fusion Transformer (TFT), for anomaly detection using threaded track data from the MITRE Corporation’s Transporta...

(This article belongs to the Special Issue Application of Multidisciplinary Optimization and Artificial Intelligence Techniques to Aerospace Engineering (Volume II))

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