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177 Results Found

  • Article
  • Open Access
3 Citations
2,974 Views
17 Pages

24 December 2021

The structural property of the search graph plays an important role in the success of local search-based metaheuristic algorithms. Magnification is one of the structural properties of the search graph. This study builds the relationship between the m...

  • Review
  • Open Access
1 Citations
2,732 Views
17 Pages

Statistics for Continuous Time Markov Chains, a Short Review

  • Manuel L. Esquível and
  • Nadezhda P. Krasii

8 April 2025

This review article is concerned to provide a global context to several works on the fitting of continuous time nonhomogeneous Markov chains with finite state space and also to point out some selected aspects of two techniques previously introduced&m...

  • Article
  • Open Access
128 Citations
10,898 Views
26 Pages

Green finance (GF) regards social responsibility and environmental protection interests as the core of development and has become a new growth point and a new engine for promoting the development of the green economy (GE). To more accurately grasp th...

  • Article
  • Open Access
9 Citations
2,445 Views
16 Pages

High-Voltage Cable Condition Assessment Method Based on Multi-Source Data Analysis

  • Xiao-Kai Meng,
  • Yan-Bing Jia,
  • Zhi-Heng Liu,
  • Zhi-Qiang Yu,
  • Pei-Jie Han,
  • Zhu-Mao Lu and
  • Tao Jin

14 February 2022

In view of the problem that the weight value given by the previous state evaluation method is fixed and single and cannot analyze the influence of the weight vector deviation on the evaluation result, a method based on the weight space Markov chain a...

  • Article
  • Open Access
4 Citations
2,469 Views
21 Pages

15 June 2022

In this study, we consider general Markov chains (MC) defined by a transition probability (kernel) that is finitely additive. These Markov chains were constructed by S. Ramakrishnan within the concepts and symbolism of game theory. Here, we study the...

  • Article
  • Open Access
1,033 Views
25 Pages

In this paper, we consider a three-node free space optical (FSO) decode-and-forward (DF) cooperative network. The relay is not connected to a permanent power supply and relies solely on the optical energy harvested (EH) from the source node. This ene...

  • Article
  • Open Access
3 Citations
3,047 Views
19 Pages

Inversion of Space Debris Material by Synthetic Light Curves

  • Yuchen Jiang,
  • Shaoming Hu,
  • Junju Du,
  • Xu Chen,
  • Hai Cao,
  • Shuqi Liu and
  • Shuai Feng

Ground-based optical observation of GEO space debris plays an essential role in tracking, identifying, cataloging, and classifying space debris. The factors that affect the brightness of space debris include size, surface material, illumination geome...

  • Article
  • Open Access
19 Citations
3,164 Views
20 Pages

27 December 2020

The problem considered is the computation of the (limiting) time-dependent performance characteristics of one-dimensional continuous-time Markov chains with discrete state space and time varying intensities. Numerical solution techniques can benefit...

  • Article
  • Open Access
4 Citations
1,518 Views
29 Pages

27 September 2023

In life testing and reliability studies, most researchers have used the maximum likelihood estimation method to estimate unknown parameters, even though it has been proven that the maximum product of spacing method has properties as good as the maxim...

  • Article
  • Open Access
1 Citations
557 Views
32 Pages

18 March 2025

This article introduces a new continuous lifetime distribution within the Gamma family, called the induced Xgamma distribution, and explores its various statistical properties. The proposed distribution’s estimation and prediction are investiga...

  • Article
  • Open Access
1 Citations
927 Views
19 Pages

Random PWM Technique Based Two-State Markov Chain for Permanent Magnet Synchronous Motor Control

  • Zhiqiang Wang,
  • Xinyuan Liu,
  • Xuefeng Jin,
  • Guozheng Zhang and
  • Zhichen Lin

30 April 2025

On the basis of the space voltage vector pulse width modulation (SVPWM) technique, the random pulse width modulation (RPWM) technique, which can reduce harmonics, is investigated based on the vector control system of permanent magnet synchronous moto...

  • Article
  • Open Access
13 Citations
2,395 Views
36 Pages

10 July 2023

In this article, a new modified asymmetric Topp–Leone distribution is created and developed from a theoretical and inferential point of view. It has the feature of extending the remarkable flexibility of a special one-shape-parameter lifetime d...

  • Article
  • Open Access
10 Citations
1,727 Views
29 Pages

5 January 2023

Applications in medical technology have a massive contribution to the treatment of patients. One of the attractive tools is ball bearings. These balls support the load of the application as well as minimize friction between the surfaces. If a heavy l...

  • Article
  • Open Access
8 Citations
5,736 Views
77 Pages

27 July 2017

In this study we develop a multi-factor extension of the family of Lee-Carter stochastic mortality models. We build upon the time, period and cohort stochastic model structure to extend it to include exogenous observable demographic features that can...

  • Article
  • Open Access
305 Views
22 Pages

17 November 2025

This study considers general Markov chains (MCs) with discrete time in an arbitrary phase space. The transition function of the MC generates two operators: T, which acts on the space of measurable functions, and A, which acts on the space of bounded...

  • Article
  • Open Access
6 Citations
2,612 Views
21 Pages

Estimation–Calibration of Continuous-Time Non-Homogeneous Markov Chains with Finite State Space

  • Manuel L. Esquível,
  • Nadezhda P. Krasii and
  • Gracinda R. Guerreiro

24 February 2024

We propose a method for fitting transition intensities to a sufficiently large set of trajectories of a continuous-time non-homogeneous Markov chain with a finite state space. Starting with simulated data computed with Gompertz–Makeham transiti...

  • Article
  • Open Access
2 Citations
2,284 Views
15 Pages

13 February 2025

This paper introduces a Markov-process-based model to analyze the performance of hybrid Free Space Optics and Radio Frequency communication systems. The proposed model captures the dynamic behavior of the link by representing the transitions between...

  • Article
  • Open Access
1 Citations
2,075 Views
26 Pages

13 January 2021

In this paper, we introduced controlled discrete-time semi-Markov random evolutions. These processes are random evolutions of discrete-time semi-Markov processes where we consider a control. applied to the values of random evolution. The main results...

  • Article
  • Open Access
3 Citations
2,337 Views
25 Pages

It is a widely known fact that the intraday seasonality of trading intervals for financial transactions such as stocks is short at the beginning of business hours and long in the middle of the day. In this paper, we extend the stochastic conditional...

  • Article
  • Open Access
17 Citations
3,107 Views
23 Pages

Digital Economy and Environmental Quality: Insights from the Spatial Durbin Model

  • Xueyang Wang,
  • Xiumei Sun,
  • Haotian Zhang and
  • Mahmood Ahmad

Recent developments in attaining carbon peaks and achieving carbon neutrality have had enormous effects on the world economy. Digitalization has been considered a viable way to curtail carbon emissions (CE) and promote sustainable economic developmen...

  • Article
  • Open Access
1,159 Views
39 Pages

5 November 2025

The coordinated development of Production-Living-Ecological (PLE) spaces has emerged as a core challenge for regional sustainability amid rapid urbanization processes. This study examines the Guanzhong Plain Urban Agglomeration (2001–2021) usin...

  • Article
  • Open Access
4 Citations
3,515 Views
20 Pages

12 January 2022

Extracting latent nonlinear dynamics from observed time-series data is important for understanding a dynamic system against the background of the observed data. A state space model is a probabilistic graphical model for time-series data, which descri...

  • Article
  • Open Access
1,589 Views
18 Pages

6 December 2024

Finding ways to improve regional energy efficiency is important for the Chinese government to achieve its dual carbon target. This paper aims to explore ways to improve regional energy efficiency by studying the spatial–temporal dynamic evoluti...

  • Article
  • Open Access
9 Citations
2,271 Views
16 Pages

Analysis of Instantaneous Feedback Queue with Heterogeneous Servers

  • Agassi Melikov,
  • Sevinj Aliyeva and
  • János Sztrik

8 December 2020

A system with heterogeneous servers, Markov Modulated Poisson flow and instantaneous feedback is studied. The primary call is serviced on a high-speed server, and after it is serviced, each call, according to the Bernoulli scheme, either leaves the s...

  • Article
  • Open Access
3 Citations
1,762 Views
15 Pages

2 August 2023

In this paper, we consider general Markov chains with discrete time in an arbitrary measurable (phase) space. Markov chains are given by a classical transition function that generates a pair of conjugate linear Markov operators in a Banach space of m...

  • Feature Paper
  • Article
  • Open Access
6 Citations
4,920 Views
23 Pages

7 February 2023

Train delays are inconvenient for passengers and major problems in railway operations. When delays occur, it is vital to provide timely information to passengers regarding delays at their departing, interchanging, and final stations. Furthermore, rea...

  • Article
  • Open Access
3 Citations
1,973 Views
11 Pages

Bounds on the Rate of Convergence for MtX/MtX/1 Queueing Models

  • Alexander Zeifman,
  • Yacov Satin and
  • Alexander Sipin

25 July 2021

We apply the method of differential inequalities for the computation of upper bounds for the rate of convergence to the limiting regime for one specific class of (in)homogeneous continuous-time Markov chains. Such an approach seems very general; the...

  • Feature Paper
  • Article
  • Open Access
4 Citations
6,602 Views
34 Pages

30 March 2019

In this paper, we propose an approach to obtain reduced-order models of Markov chains. Our approach is composed of two information-theoretic processes. The first is a means of comparing pairs of stationary chains on different state spaces, which is d...

  • Article
  • Open Access
2 Citations
3,360 Views
25 Pages

A Two-Server Queue with Interdependence between Arrival and Service Processes

  • Sindhu S,
  • Achyutha Krishnamoorthy and
  • Dmitry Kozyrev

18 November 2023

In this paper, we analyse a queueing system with two servers where the arrival and service processes are interdependent. The evolution of these processes is governed by transitions on the product space of three Markov chains, which are descriptors of...

  • Article
  • Open Access
1 Citations
1,310 Views
12 Pages

12 October 2023

In this paper it is shown, that if a possibly inhomogeneous Markov chain with continuous time and finite state space is weakly ergodic and all the entries of its intensity matrix are locally integrable, then, using available results from the perturba...

  • Article
  • Open Access
1 Citations
1,175 Views
20 Pages

9 October 2024

We study Markov operators T, A, and T* of general Markov chains on an arbitrary measurable space. The operator, T, is defined on the Banach space of all bounded measurable functions. The operator A is defined on the Banach space of all bounded counta...

  • Article
  • Open Access
7 Citations
2,175 Views
13 Pages

2 February 2020

This paper is devoted to the study of the stability of finite-dimensional distribution of time-inhomogeneous, discrete-time Markov chains on a general state space. The main result of the paper provides an estimate for the absolute difference of finit...

  • Article
  • Open Access
3 Citations
3,330 Views
34 Pages

23 February 2021

In this work we propose a model for open Markov chains that can be interpreted as a system of non-interacting particles evolving according to the rules of a Markov chain. The number of particles in the system is not constant, because we allow the par...

  • Feature Paper
  • Article
  • Open Access
346 Views
19 Pages

15 November 2025

This work explores continuous state–space stationary reversible Markov chains generated by a new family of absolutely continuous symmetric copulas that have piecewise constant densities. We compare three parameter estimation techniques for the...

  • Article
  • Open Access
1 Citations
2,360 Views
26 Pages

HMM-Based Dynamic Mapping with Gaussian Random Fields

  • Hongjun Li,
  • Miguel Barão,
  • Luís Rato and
  • Shengjun Wen

26 February 2022

This paper focuses on the mapping problem for mobile robots in dynamic environments where the state of every point in space may change, over time, between free or occupied. The dynamical behaviour of a single point is modelled by a Markov chain, whic...

  • Article
  • Open Access
1 Citations
1,354 Views
12 Pages

6 September 2024

We revisit the problem of the computation of the limiting characteristics of (in)homogeneous continuous-time Markov chains with the finite state space. In general, it can be performed only numerically. The common rule of thumb is to interrupt calcula...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,321 Views
14 Pages

8 December 2020

Optimization of mixture models such as the mixture transition distribution (MTD) model is notoriously difficult because of the high complexity of their solution space. The best approach comprises combining features of two types of algorithms: an algo...

  • Article
  • Open Access
70 Citations
16,623 Views
49 Pages

Entropy: The Markov Ordering Approach

  • Alexander N. Gorban,
  • Pavel A. Gorban and
  • George Judge

7 May 2010

The focus of this article is on entropy and Markov processes. We study the properties of functionals which are invariant with respect to monotonic transformations and analyze two invariant “additivity” properties: (i) existence of a monotonic transfo...

  • Article
  • Open Access
9 Citations
3,492 Views
22 Pages

Complex geographical spatial sampling usually encounters various multi-objective optimization problems, for which effective multi-objective optimization algorithms are much needed to help advance the field. To improve the computational efficiency of...

  • Article
  • Open Access
7 Citations
8,048 Views
15 Pages

21 May 2024

Perturbation bounds are powerful tools for investigating the phenomenon of insensitivity to perturbations, also referred to as stability, for stochastic and deterministic systems. This perspective article presents a focused account of some of the mai...

  • Article
  • Open Access
28 Citations
5,594 Views
15 Pages

Consistent Estimation of Partition Markov Models

  • Jesús E. García and
  • Verónica A. González-López

6 April 2017

The Partition Markov Model characterizes the process by a partition L of the state space, where the elements in each part of L share the same transition probability to an arbitrary element in the alphabet. This model aims to answer the fo...

  • Article
  • Open Access
37 Citations
6,507 Views
17 Pages

21 November 2017

This paper experiments an artificial neural networks model with Bayesian approach on a small real estate sample. The output distribution has been calculated operating a numerical integration on the weights space with the Markov Chain Hybrid Monte Car...

  • Article
  • Open Access
1 Citations
4,958 Views
12 Pages

29 July 2016

We consider the problem of estimating the measure of subsets in very large networks. A prime tool for this purpose is the Markov Chain Monte Carlo (MCMC) algorithm. This algorithm, while extremely useful in many cases, still often suffers from the dr...

  • Article
  • Open Access
8 Citations
4,195 Views
19 Pages

30 December 2018

In multiple detection target tracking environments, PDA-based algorithms such as multiple detection joint integrated probabilistic data association (MD-JIPDA) utilize the measurement partition method to generate measurement cells. Thus, one-to-many t...

  • Article
  • Open Access
12 Citations
1,861 Views
16 Pages

13 May 2023

In this paper, we consider two queuing models. Model 1 considers a single-server working vacation queuing system with interdependent arrival and service processes. The arrival and service processes evolve by transitions on the product space of two Ma...

  • Article
  • Open Access
1 Citations
1,891 Views
13 Pages

A New Stochastic Process of Prestack Inversion for Rock Property Estimation

  • Long Yin,
  • Sheng Zhang,
  • Kun Xiang,
  • Yongqiang Ma,
  • Yongzhen Ji,
  • Ke Chen and
  • Dongyu Zheng

25 February 2022

In order to enrich the current prestack stochastic inversion theory, we propose a prestack stochastic inversion method based on adaptive particle swarm optimization combined with Markov chain Monte Carlo (MCMC). The MCMC could provide a stochastic op...

  • Feature Paper
  • Review
  • Open Access
25 Citations
4,190 Views
25 Pages

14 February 2020

This paper is largely a review. It considers two main methods used to study stability and to obtain appropriate quantitative estimates of perturbations of (inhomogeneous) Markov chains with continuous time and a finite or countable state space. An ap...

  • Article
  • Open Access
5 Citations
3,678 Views
12 Pages

17 April 2020

A Bayesian approach was developed, tested, and applied to model ordinal response data in monotone non-decreasing processes with measurement errors. An inhomogeneous hidden Markov model with continuous state-space was considered to incorporate measure...

  • Article
  • Open Access
2 Citations
2,657 Views
19 Pages

15 April 2024

This paper explores the concept of proportional lumpability as an extension of the original definition of lumpability, addressing the challenges posed by the state space explosion problem in computing performance indices for large stochastic models....

  • Article
  • Open Access
3,353 Views
17 Pages

16 December 2024

The sheaf cohomology techniques are newly used to include Morse simplicial complexes in a rectangular-matrix chain, whose singular values are compatible with those of a square matrix, which can be used for multiple sequencing. The equivalence with th...

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