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Entropy, Volume 24, Issue 6

2022 June - 104 articles

Cover Story: Voronoi diagrams generated by a random set of points were studied. Dividing the edges of Voronoi cells into random parts yielded positional ordering of Voronoi cells, reminiscent of the formation of lamellae and spherulites in semicrystalline polymers. Shannon entropy of the patterns showed a tendency to attain values typical for random patterns. Shannon entropy and the continuous measure of symmetry demonstrated asymptotic behavior, while approaching the saturation values with the increase in the number of the iteration steps. Shannon entropy is not an unambiguous measure of order in the 2D patterns; more symmetrical patterns may demonstrate higher values of Shannon entropy. View this paper
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Articles (104)

  • Article
  • Open Access
81 Citations
8,000 Views
18 Pages

Reliable Semantic Communication System Enabled by Knowledge Graph

  • Shengteng Jiang,
  • Yueling Liu,
  • Yichi Zhang,
  • Peng Luo and ,
  • Kuo Cao,
  • Jun Xiong,
  • Haitao Zhao and
  • Jibo Wei
  • + 3 authors+ 0 author

20 June 2022

Semantic communication is a promising technology used to overcome the challenges of large bandwidth and power requirements caused by the data explosion. Semantic representation is an important issue in semantic communication. The knowledge graph, pow...

(This article belongs to the Special Issue Information Theoretic Methods for Future Communication Systems)
  • Article
  • Open Access
4 Citations
3,981 Views
16 Pages

20 June 2022

There is an increasing interest in machine learning (ML) algorithms for predicting patient outcomes, as these methods are designed to automatically discover complex data patterns. For example, the random forest (RF) algorithm is designed to identify...

(This article belongs to the Special Issue Improving Predictive Models with Expert Knowledge)
  • Article
  • Open Access
13 Citations
3,147 Views
14 Pages

20 June 2022

Activity recognition methods often include some hyper-parameters based on experience, which greatly affects their effectiveness in activity recognition. However, the existing hyper-parameter optimization algorithms are mostly for continuous hyper-par...

  • Article
  • Open Access
16 Citations
3,262 Views
15 Pages

20 June 2022

The transition from the quantum to the classical world is not yet understood. Here, we take a new approach. Central to this is the understanding that measurement and actualization cannot occur except on some specific basis. However, we have no establ...

  • Article
  • Open Access
19 Citations
4,051 Views
20 Pages

Multi-Scale Mixed Attention Network for CT and MRI Image Fusion

  • Yang Liu,
  • Binyu Yan,
  • Rongzhu Zhang,
  • Kai Liu and ,
  • Gwanggil Jeon and
  • Xiaoming Yang
  • + 1 author+ 0 author

19 June 2022

Recently, the rapid development of the Internet of Things has contributed to the generation of telemedicine. However, online diagnoses by doctors require the analyses of multiple multi-modal medical images, which are inconvenient and inefficient. Mul...

(This article belongs to the Special Issue Entropy Algorithms Using Deep Learning for Signal Processing)
  • Feature Paper
  • Article
  • Open Access
4 Citations
3,487 Views
25 Pages

18 June 2022

With the goal of understanding if the information contained in node metadata can help in the task of link weight prediction, we investigate herein whether incorporating it as a similarity feature (referred to as metadata similarity) between end nodes...

(This article belongs to the Special Issue Selected Papers from the Tenth International Conference on Complex Networks & Their Applications)
  • Article
  • Open Access
20 Citations
4,955 Views
14 Pages

18 June 2022

As a multi-particle entangled state, the Greenberger–Horne–Zeilinger (GHZ) state plays an important role in quantum theory and applications. In this study, we propose a flexible multi-user measurement-device-independent quantum key distri...

(This article belongs to the Special Issue Quantum Information and Computation)
  • Feature Paper
  • Article
  • Open Access
2 Citations
3,039 Views
9 Pages

18 June 2022

Using numerically exact solution of the time-dependent Schrödinger equation together with time-dependent quantum Monte Carlo (TDQMC) calculations, here we compare the effects of spatial nonlocality versus nonlocal causality for the ground state...

  • Article
  • Open Access
1 Citations
2,987 Views
15 Pages

Twin-Field Quantum Digital Signature with Fully Discrete Phase Randomization

  • Jiayao Wu,
  • Chen He,
  • Jiahui Xie,
  • Xiaopeng Liu and
  • Minghui Zhang

18 June 2022

Quantum digital signatures (QDS) are able to verify the authenticity and integrity of a message in modern communication. However, the current QDS protocols are restricted by the fundamental rate-loss bound and the secure signature distance cannot be...

(This article belongs to the Section Quantum Information)
  • Feature Paper
  • Article
  • Open Access
6 Citations
4,499 Views
26 Pages

17 June 2022

This paper introduces a closed-form expression for the Kullback–Leibler divergence (KLD) between two central multivariate Cauchy distributions (MCDs) which have been recently used in different signal and image processing applications where non-...

(This article belongs to the Special Issue Information and Divergence Measures)
  • Article
  • Open Access
9 Citations
4,346 Views
16 Pages

17 June 2022

Belavkin–Staszewski relative entropy can naturally characterize the effects of the possible noncommutativity of quantum states. In this paper, two new conditional entropy terms and four new mutual information terms are first defined by replacin...

(This article belongs to the Special Issue Quantum Information and Computation)
  • Article
  • Open Access
5 Citations
3,251 Views
18 Pages

17 June 2022

Strong viscous interaction and multiple flow regimes exist when vehicles fly at high altitude and high Mach number conditions. The Navier–Stokes(NS) solver is no longer applicable in the above situation. Instead, the direct simulation Monte Car...

(This article belongs to the Special Issue Kinetic Theory-Based Methods in Fluid Dynamics)
  • Feature Paper
  • Article
  • Open Access
3 Citations
2,713 Views
20 Pages

Quantum Models à la Gabor for the Space-Time Metric

  • Gilles Cohen-Tannoudji,
  • Jean-Pierre Gazeau,
  • Célestin Habonimana and
  • Juma Shabani

16 June 2022

As an extension of Gabor signal processing, the covariant Weyl-Heisenberg integral quantization is implemented to transform functions on the eight-dimensional phase space x,k into Hilbertian operators. The x=xμ values are space-time variables, and...

(This article belongs to the Section Quantum Information)
  • Article
  • Open Access
13 Citations
4,294 Views
24 Pages

16 June 2022

Spiking neural P systems (SN P systems for short) realize the high abstraction and simulation of the working mechanism of the human brain, and adopts spikes for information encoding and processing, which are regarded as one of the third-generation ne...

  • Article
  • Open Access
5 Citations
2,955 Views
16 Pages

15 June 2022

In this paper, we present stochastic synchronous cellular automaton defined on a square lattice. The automaton rules are based on the SEIR (susceptible → exposed → infected → recovered) model with probabilistic parameters gathered from...

(This article belongs to the Special Issue Dissipative, Entropy-Production Systems across Condensed Matter and Interdisciplinary Classical VS. Quantum Physics)
  • Article
  • Open Access
10 Citations
3,868 Views
18 Pages

Colored Texture Analysis Fuzzy Entropy Methods with a Dermoscopic Application

  • Mirvana Hilal,
  • Andreia S. Gaudêncio,
  • Pedro G. Vaz,
  • João Cardoso and
  • Anne Humeau-Heurtier

15 June 2022

Texture analysis is a subject of intensive focus in research due to its significant role in the field of image processing. However, few studies focus on colored texture analysis and even fewer use information theory concepts. Entropy measures have be...

(This article belongs to the Special Issue Entropy Algorithms for the Analysis of Biomedical Signals)
  • Article
  • Open Access
1 Citations
3,102 Views
17 Pages

15 June 2022

The endwall effect has a great impact on the aerodynamic performance of compressor blades. Based on three conventional near-endwall blade modeling methods of bowed blade, endbend blade and leading-edge strake blade (LESB), two combined optimization d...

  • Article
  • Open Access
5 Citations
3,560 Views
15 Pages

Supernovae and the Arrow of Time

  • Snezhana I. Abarzhi,
  • Desmon L. Hill,
  • Annie Naveh,
  • Kurt C. Williams and
  • Cameron E. Wright

14 June 2022

Supernovae are explosions of stars and are a central problem in astrophysics. Rayleigh–Taylor (RT) and Richtmyer–Meshkov (RM) instabilities develop during the star’s explosion and lead to intense interfacial RT/RM mixing of the star...

(This article belongs to the Special Issue The Second Law and Asymmetry of Time)
  • Article
  • Open Access
13 Citations
3,094 Views
24 Pages

14 June 2022

The main concern of this paper is finite-time stability (FTS) for uncertain discrete-time stochastic nonlinear systems (DSNSs) with time-varying delay (TVD) and multiplicative noise. First, a Lyapunov–Krasovskii function (LKF) is constructed, u...

  • Feature Paper
  • Review
  • Open Access
25 Citations
4,598 Views
40 Pages

14 June 2022

It is well-recognized that granular media under rapid flow conditions can be modeled as a gas of hard spheres with inelastic collisions. At moderate densities, a fundamental basis for the determination of the granular hydrodynamics is provided by the...

(This article belongs to the Special Issue Review Papers for Entropy)
  • Article
  • Open Access
18 Citations
3,903 Views
14 Pages

Research on Fault Diagnosis of Rolling Bearings Based on Variational Mode Decomposition Improved by the Niche Genetic Algorithm

  • Ruimin Shi,
  • Bukang Wang,
  • Zongyan Wang,
  • Jiquan Liu and ,
  • Xinyu Feng and
  • Lei Dong
  • + 1 author+ 0 author

14 June 2022

Due to the influence of signal-to-noise ratio in the early failure stage of rolling bearings in rotating machinery, it is difficult to effectively extract feature information. Variational Mode Decomposition (VMD) has been widely used to decompose vib...

  • Article
  • Open Access
9 Citations
4,185 Views
11 Pages

Entropy Production in Non-Markovian Collision Models: Information Backflow vs. System-Environment Correlations

  • Hüseyin T. Şenyaşa,
  • Şahinde Kesgin,
  • Göktuğ Karpat and
  • Barış Çakmak

14 June 2022

We investigate the irreversible entropy production of a qubit in contact with an environment modelled by a microscopic collision model in both Markovian and non-Markovian regimes. Our main goal is to contribute to the discussions on the relationship...

(This article belongs to the Special Issue Quantum Collision Models)
  • Feature Paper
  • Article
  • Open Access
4 Citations
4,688 Views
28 Pages

Effective Field Theory of Random Quantum Circuits

  • Yunxiang Liao and
  • Victor Galitski

13 June 2022

Quantum circuits have been widely used as a platform to simulate generic quantum many-body systems. In particular, random quantum circuits provide a means to probe universal features of many-body quantum chaos and ergodicity. Some such features have...

(This article belongs to the Special Issue Quantum Chaos—Dedicated to Professor Giulio Casati on the Occasion of His 80th Birthday)
  • Article
  • Open Access
9 Citations
4,084 Views
12 Pages

13 June 2022

As multilayer networks are widely applied in modern society, numerous studies have shown the impact of a multilayer network structure and the network nature on the proportion of cooperators in the network. In this paper, we use Barabási–...

(This article belongs to the Section Statistical Physics)
  • Feature Paper
  • Article
  • Open Access
21 Citations
3,600 Views
17 Pages

13 June 2022

A repeated interaction process assisted by auxiliary thermal systems charges a quantum battery. The charging energy is supplied by switching on and off the interaction between the battery and the thermal systems. The charged state is an equilibrium s...

(This article belongs to the Special Issue Quantum Collision Models)
  • Concept Paper
  • Open Access
97 Citations
19,748 Views
33 Pages

12 June 2022

One of the most salient features of life is its capacity to handle novelty and namely to thrive and adapt to new circumstances and changes in both the environment and internal components. An understanding of this capacity is central to several fields...

(This article belongs to the Special Issue The Role of Information in Cultural Evolution)
  • Article
  • Open Access
10 Citations
3,043 Views
13 Pages

11 June 2022

In this paper, a wind energy conversion system is studied to improve the conversion efficiency and maximize power output. Firstly, a nonlinear state space model is established with respect to shaft current, turbine rotational speed and power output i...

(This article belongs to the Topic Advances in Nonlinear Dynamics: Methods and Applications)
  • Article
  • Open Access
6 Citations
3,066 Views
14 Pages

11 June 2022

Exploring the spatial distribution of the multi-fractal scaling behaviours in atmospheric CO2 concentration time series is useful for understanding the dynamic mechanisms of carbon emission and absorption. In this work, we utilise a well-established...

(This article belongs to the Topic Complex Systems and Network Science)
  • Article
  • Open Access
9 Citations
3,891 Views
17 Pages

11 June 2022

In this paper, a robust trajectory tracking control method with state constraints and uncertain disturbances on the ground of adaptive dynamic programming (ADP) is proposed for nonlinear systems. Firstly, the augmented system consists of the tracking...

(This article belongs to the Topic Advances in Nonlinear Dynamics: Methods and Applications)
  • Article
  • Open Access
17 Citations
4,881 Views
22 Pages

11 June 2022

Most LLIE algorithms focus solely on enhancing the brightness of the image and ignore the extraction of image details, leading to losing much of the information that reflects the semantics of the image, losing the edges, textures, and shape features,...

(This article belongs to the Special Issue Information Theory in Signal Processing and Image Processing)
  • Article
  • Open Access
13 Citations
3,831 Views
21 Pages

11 June 2022

Vehicular edge computing is a new computing paradigm. By introducing edge computing into the Internet of Vehicles (IoV), service providers are able to serve users with low-latency services, as edge computing deploys resources (e.g., computation, stor...

(This article belongs to the Section Multidisciplinary Applications)
  • Review
  • Open Access
6 Citations
8,475 Views
28 Pages

Verification of Information Thermodynamics in a Trapped Ion System

  • Lei-Lei Yan,
  • Lv-Yun Wang,
  • Shi-Lei Su,
  • Fei Zhou and
  • Mang Feng

11 June 2022

Information thermodynamics has developed rapidly over past years, and the trapped ions, as a controllable quantum system, have demonstrated feasibility to experimentally verify the theoretical predictions in the information thermodynamics. Here, we a...

(This article belongs to the Section Quantum Information)
  • Article
  • Open Access
4 Citations
4,332 Views
15 Pages

10 June 2022

(1) Background: A typical cardiac cycle consists of a P-wave, a QRS complex, and a T-wave, and these waves are perfectly shown in electrocardiogram signals (ECG). When atrial fibrillation (AF) occurs, P-waves disappear, and F-waves emerge. F-waves co...

  • Feature Paper
  • Article
  • Open Access
10 Citations
3,127 Views
14 Pages

Effect of Ion and Binding Site on the Conformation of Chosen Glycosaminoglycans at the Albumin Surface

  • Piotr Sionkowski,
  • Piotr Bełdowski,
  • Natalia Kruszewska,
  • Piotr Weber and ,
  • Beata Marciniak and
  • Krzysztof Domino
  • + 1 author+ 0 author

10 June 2022

Albumin is one of the major components of synovial fluid. Due to its negative surface charge, it plays an essential role in many physiological processes, including the ability to form molecular complexes. In addition, glycosaminoglycans such as hyalu...

(This article belongs to the Special Issue Dissipative, Entropy-Production Systems across Condensed Matter and Interdisciplinary Classical VS. Quantum Physics)
  • Article
  • Open Access
6 Citations
3,243 Views
15 Pages

10 June 2022

Traditional mathematical search models retrieve scientific documents only by mathematical expressions and their contexts and do not consider the ontological attributes of scientific documents, which result in gaps between the queries and the retrieva...

(This article belongs to the Special Issue Advances in Information Sciences and Applications)
  • Article
  • Open Access
2 Citations
3,035 Views
29 Pages

9 June 2022

In this paper, a generalized information-theoretic framework for the emergence of multi-resolution hierarchical tree abstractions is developed. By leveraging ideas from information-theoretic signal encoding with side information, this paper develops...

(This article belongs to the Section Information Theory, Probability and Statistics)
  • Article
  • Open Access
3,199 Views
13 Pages

The Linear Relationship Model with LASSO for Studying Stock Networks

  • Muzi Chen,
  • Hongjiong Tian,
  • Boyao Wu and
  • Tianhai Tian

9 June 2022

The correlation-based network is a powerful tool to reveal the influential mechanisms and relations in stock markets. However, current methods for developing network models are dominantly based on the pairwise relationship of positive correlations. T...

(This article belongs to the Special Issue Complex Network Analysis in Econometrics)
  • Article
  • Open Access
1 Citations
3,756 Views
14 Pages

9 June 2022

As the most popular anonymous communication system, Tor provides anonymous protection for users by sending their messages through a series of relays. Due to the use of the bandwidth-weighted path selection algorithm, many more users choose routers wi...

  • Article
  • Open Access
9 Citations
3,000 Views
16 Pages

9 June 2022

The nonlinear Schrödinger equation is an important model equation in the study of quantum states of physical systems. To improve the computing efficiency, a fast algorithm based on the time two-mesh high-order compact difference scheme for solvi...

(This article belongs to the Special Issue Machine Learning and Modern Numerical Methods in Partial Differential Equations)
  • Article
  • Open Access
3 Citations
4,804 Views
16 Pages

8 June 2022

We introduce a new incompatibility criterion for quantum channels based on the notion of (quantum) Fisher information. Our construction is based on a similar criterion for quantum measurements put forward by H. Zhu. We then study the power of the inc...

(This article belongs to the Special Issue Quantum Information and Computation)
  • Feature Paper
  • Article
  • Open Access
4 Citations
4,681 Views
32 Pages

Mathematical Models for Unstable Quantum Systems and Gamow States

  • Manuel Gadella,
  • Sebastián Fortín,
  • Juan Pablo Jorge and
  • Marcelo Losada

8 June 2022

We review some results in the theory of non-relativistic quantum unstable systems. We account for the most important definitions of quantum resonances that we identify with unstable quantum systems. Then, we recall the properties and construction of...

(This article belongs to the Special Issue Foundations of Quantum Mechanics: Reversibility and Time Arrow in Quantum Theory)
  • Article
  • Open Access
10 Citations
3,021 Views
31 Pages

8 June 2022

With the advancement of technology worldwide, security is essential for online information and data. This research work proposes a novel image encryption method based on combined chaotic maps, Halton sequence, five-dimension (5D) Hyper-Chaotic System...

  • Feature Paper
  • Review
  • Open Access
8 Citations
5,355 Views
16 Pages

From Chaos to Ordering: New Studies in the Shannon Entropy of 2D Patterns

  • Irina Legchenkova,
  • Mark Frenkel,
  • Nir Shvalb,
  • Shraga Shoval and ,
  • Oleg V. Gendelman and
  • Edward Bormashenko
  • + 1 author+ 0 author

8 June 2022

Properties of the Voronoi tessellations arising from random 2D distribution points are reported. We applied an iterative procedure to the Voronoi diagrams generated by a set of points randomly placed on the plane. The procedure implied dividing the e...

(This article belongs to the Section Entropy Reviews)
  • Article
  • Open Access
28 Citations
10,761 Views
23 Pages

P2P Lending Default Prediction Based on AI and Statistical Models

  • Po-Chang Ko,
  • Ping-Chen Lin,
  • Hoang-Thu Do and
  • You-Fu Huang

8 June 2022

Peer-to-peer lending (P2P lending) has proliferated in recent years thanks to Fintech and big data advancements. However, P2P lending platforms are not tightly governed by relevant laws yet, as their development speed has far exceeded that of regulat...

(This article belongs to the Topic Machine and Deep Learning)
  • Article
  • Open Access
193 Citations
11,268 Views
16 Pages

A Hybrid Deep Learning Model for Brain Tumour Classification

  • Mohammed Rasool,
  • Nor Azman Ismail,
  • Wadii Boulila,
  • Adel Ammar and ,
  • Hussein Samma,
  • Wael M. S. Yafooz and
  • Abdel-Hamid M. Emara
  • + 2 authors+ 0 author

8 June 2022

A brain tumour is one of the major reasons for death in humans, and it is the tenth most common type of tumour that affects people of all ages. However, if detected early, it is one of the most treatable types of tumours. Brain tumours are classified...

(This article belongs to the Special Issue Methods in Artificial Intelligence and Information Processing)
  • Feature Paper
  • Article
  • Open Access
7 Citations
2,597 Views
16 Pages

8 June 2022

In this paper, we prove some inequalities between intrinsic and extrinsic curvature invariants, namely the normalized δ-Casorati curvatures and the scalar curvature of statistical submanifolds in Kenmotsu statistical manifolds of constant ϕ...

  • Article
  • Open Access
9 Citations
2,688 Views
15 Pages

Medical Image Authentication Method Based on the Wavelet Packet and Energy Entropy

  • Tiankai Sun,
  • Xingyuan Wang,
  • Kejun Zhang,
  • Daihong Jiang and ,
  • Da Lin,
  • Xunguang Jv,
  • Bin Ding and
  • Weidong Zhu
  • + 3 authors+ 0 author

8 June 2022

The transmission of digital medical information is affected by data compression, noise, scaling, labeling, and other factors. At the same time, medical data may be illegally copied and maliciously tampered with without authorization. Therefore, the c...

(This article belongs to the Special Issue Adversarial Intelligence: Secrecy, Privacy, and Robustness)

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Entropy - ISSN 1099-4300