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Entropy, Volume 27, Issue 8

2025 August - 115 articles

Cover Story: The image depicts system and environmental complexity as functions of scale (the level of detail in their descriptions), with system complexity exceeding environmental complexity at all scales—a necessary condition for effective adaptation. This requirement, which we term the multi-scale law of requisite variety, frames complexity not merely as an abstract concept but as a property essential for successful interaction. Below the curves, the grids represent successive coarse-graining, illustrating how finer-scale descriptions can be systematically aggregated into larger-scale ones. View this paper
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Articles (115)

  • Article
  • Open Access
1 Citations
2,340 Views
21 Pages

21 August 2025

In recommender systems research, the data sparsity problem has driven the development of hybrid recommendation algorithms integrating multimodal information and the application of graph neural networks (GNNs). However, conventional GNNs relying on ho...

  • Article
  • Open Access
989 Views
16 Pages

21 August 2025

The dynamics of signal transmission in neuronal networks remain incompletely understood. In this study, we propose a novel Rulkov neuronal network model that incorporates Q-learning, a reinforcement learning method, to establish efficient signal tran...

  • Article
  • Open Access
1 Citations
1,837 Views
24 Pages

21 August 2025

The present work applies and extends the previously developed Quantitative Geometrical Thermodynamics (QGT) formalism to the derivation of a Hamiltonian for the damped harmonic oscillator (DHO) across all damping regimes. By introducing complex time,...

  • Article
  • Open Access
962 Views
24 Pages

20 August 2025

In many practical applications, data collected over time often exhibit autocorrelation, which, if unaccounted for, can lead to biased or misleading statistical inferences. To address this issue, we propose a varying-coefficient additive model for den...

  • Article
  • Open Access
3 Citations
6,266 Views
17 Pages

20 August 2025

Optimization of stock selection strategies has been a topic of interest in finance. Although deep learning models have demonstrated superior performance over traditional methods, there are still shortcomings. For example, previous studies do not prov...

  • Article
  • Open Access
1,057 Views
23 Pages

Fixed-Time Active Disturbance Rejection Temperature–Pressure Decoupling Control for a High-Flow Air Intake System

  • Louyue Zhang,
  • Hehong Zhang,
  • Duoqi Shi,
  • Zhihong Dan,
  • Xi Wang,
  • Chao Zhai,
  • Gaoxi Xiao and
  • Zhouzhe Xu

20 August 2025

High-flow aeroengine transient tests involve strong coupling and external disturbances, which pose significant challenges for intake environment simulation systems (IESSs). This study proposes a compound control scheme that combines fixed-time active...

  • Article
  • Open Access
2 Citations
1,917 Views
32 Pages

19 August 2025

In the era of digital interconnectivity, user-generated reviews on platforms such as TripAdvisor have become a valuable source of social feedback, reflecting collective experiences and perceptions of airline services. However, aggregating such feedba...

  • Tutorial
  • Open Access
3,475 Views
25 Pages

Geometric Neural Ordinary Differential Equations: From Manifolds to Lie Groups

  • Yannik P. Wotte,
  • Federico Califano and
  • Stefano Stramigioli

19 August 2025

Neural ordinary differential equations (neural ODEs) are a well-established tool for optimizing the parameters of dynamical systems, with applications in image classification, optimal control, and physics learning. Although dynamical systems of inter...

  • Article
  • Open Access
1 Citations
1,187 Views
24 Pages

19 August 2025

Sea surface wind speed is a key parameter in marine meteorology, navigation safety, and offshore engineering. Traditional marine radar wind speed retrieval algorithms often suffer from poor environmental adaptability and limited applicability across...

  • Article
  • Open Access
1,828 Views
30 Pages

19 August 2025

As global e-commerce expands, efficient cross-border logistics services have become essential. To support the evaluation of logistics service providers (LSPs), we propose HD-CBDTOPSIS (Technique for Order Preference by Similarity to Ideal Solution wi...

  • Article
  • Open Access
1,189 Views
27 Pages

19 August 2025

Clustering algorithms based on non-negative matrix factorization (NMF) have garnered significant attention in data mining due to their strong interpretability and computational simplicity. However, traditional NMF often struggles to effectively captu...

  • Article
  • Open Access
1,218 Views
21 Pages

Brain Oscillations and Autonomic Synthonization via Comodulation in Collaborative Negotiation

  • Katia Rovelli,
  • Carlotta Acconito,
  • Laura Angioletti and
  • Michela Balconi

18 August 2025

This study investigates the relationship between neural and physiological synthonization via comodulation (Synth) in dyadic exchanges centered on negotiation processes. In total, 13 dyads participated in a negotiation task with three phases: Initiati...

  • Article
  • Open Access
1 Citations
1,166 Views
32 Pages

18 August 2025

With the rapid advancement of information technology, as critical information carriers, images are confronted with significant security risks. To ensure the image security, this paper proposes an image encryption algorithm based on a dynamic rhombus...

  • Article
  • Open Access
1,412 Views
23 Pages

18 August 2025

By integrating statistical modeling and data analysis techniques, we systematically assess the carbon emission performance of the ceramic industry and propose targeted emission reduction pathways. Firstly, the entropy weight TOPSIS model is employed...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,205 Views
26 Pages

Time-Marching Quantum Algorithm for Simulation of Nonlinear Lorenz Dynamics

  • Efstratios Koukoutsis,
  • George Vahala,
  • Min Soe,
  • Kyriakos Hizanidis,
  • Linda Vahala and
  • Abhay K. Ram

17 August 2025

Simulating nonlinear classical dynamics on a quantum computer is an inherently challenging task due to the linear operator formulation of quantum mechanics. In this work, we provide a systematic approach to alleviate this difficulty by developing an...

  • Article
  • Open Access
1,735 Views
11 Pages

16 August 2025

The key to resolving the black hole information loss paradox lies in clarifying the origin of black hole entropy and the mechanism by which black holes store information. By applying thermodynamic principles, we demonstrate that the entropy of a grav...

  • Article
  • Open Access
1,088 Views
21 Pages

15 August 2025

In hyperspectral image (HSI) classification, feature learning and label accuracy play a crucial role. In actual hyperspectral scenes, however, noisy labels are unavoidable and seriously impact the performance of methods. While deep learning has achie...

  • Article
  • Open Access
1,287 Views
11 Pages

15 August 2025

This paper describes a crowdsourced experiment in which participants were asked to judge which of two simultaneously presented facial images (one real, one AI-generated) was fake. With the growing presence of synthetic imagery in digital environments...

  • Article
  • Open Access
4 Citations
1,691 Views
18 Pages

15 August 2025

In multi-criteria decision-making (MCDM) environments characterized by uncertainty and data irregularities, the reliability of weighting methods becomes critical for ensuring robust and accurate decisions. This study introduces a novel hybrid objecti...

  • Feature Paper
  • Article
  • Open Access
1,048 Views
20 Pages

14 August 2025

In this paper, closed-form expressions for the variation of the expectation of a given function due to changes in the probability measure (probability distribution drifts) are presented. These expressions unveil interesting connections with Gibbs pro...

  • Article
  • Open Access
1,072 Views
18 Pages

14 August 2025

We study the quantum state discrimination problem under the minimum error (ME) strategy for a set of N pure equidistant states. These states are characterized by the property that the inner product between any pair of states is given by a unique comp...

  • Article
  • Open Access
1,786 Views
24 Pages

Hierarchical Multi-Scale Mamba with Tubular Structure-Aware Convolution for Retinal Vessel Segmentation

  • Tao Wang,
  • Dongyuan Tian,
  • Haonan Zhao,
  • Jiamin Liu,
  • Weijie Wang,
  • Chunpei Li and
  • Guixia Liu

14 August 2025

Retinal vessel segmentation plays a crucial role in diagnosing various retinal and cardiovascular diseases and serves as a foundation for computer-aided diagnostic systems. Blood vessels in color retinal fundus images, captured using fundus cameras,...

  • Article
  • Open Access
1 Citations
2,005 Views
19 Pages

14 August 2025

The Poincaré plot was introduced as a tool to analyze heart rate variations caused by arrhythmias. Later, it was applied to time series with normal beats. The plot shows the relationship between the inter-beat interval (IBI) of one beat to the...

  • Article
  • Open Access
1,031 Views
15 Pages

Adaptive Feedback Compensation Algorithm for Quantum Random Number Generators

  • Wei Deng,
  • Kun Chen,
  • Fei Hua,
  • Jing Cheng,
  • Banghong Guo and
  • Huanwen Xie

14 August 2025

As a core component in quantum cryptography, Quantum Random Number Generators (QRNGs) face dual critical challenges: insufficient randomness enhancement and limited compatibility with post-processing algorithms. This study proposes an Adaptive Feedba...

  • Article
  • Open Access
1 Citations
980 Views
23 Pages

13 August 2025

Robust stability/stabilization for discrete-time time-varying Markovian jump linear systems subject to block-diagonal stochastic parameter perturbations is addressed in this paper. Using a scaling technique, we succeed in effectively addressing the m...

  • Article
  • Open Access
1,045 Views
13 Pages

Phase-Space Approach for Topological Phase Transitions in Silicene

  • Maciej Kalka,
  • Piotr Pigoń and
  • Bartłomiej J. Spisak

12 August 2025

Silicene is a two-dimensional silicon monolayer with a band gap caused by relatively strong spin–orbit coupling. This band gap can be steered using a vertical electric field. In turn, the change in this electric field value leads to a transitio...

  • Article
  • Open Access
1,048 Views
24 Pages

11 August 2025

Age of Information (AoI) is a newly introduced metric that quantifies the freshness and timeliness of data, playing a crucial role in applications reliant on time-sensitive information. Minimizing AoI through optimal scheduling is challenging, especi...

  • Article
  • Open Access
2,023 Views
22 Pages

Tight Bounds Between the Jensen–Shannon Divergence and the Minmax Divergence

  • Arseniy Akopyan,
  • Herbert Edelsbrunner,
  • Žiga Virk and
  • Hubert Wagner

11 August 2025

Motivated by questions arising at the intersection of information theory and geometry, we compare two dissimilarity measures between finite categorical distributions. One is the well-known Jensen–Shannon divergence, which is easy to compute and...

  • Article
  • Open Access
1 Citations
2,853 Views
20 Pages

11 August 2025

With the continuous advancement of side-channel attacks (SCA), deep learning-based methods have emerged as a prominent research focus due to their powerful feature extraction and nonlinear modeling capabilities. Traditional convolutional neural netwo...

  • Article
  • Open Access
1 Citations
1,161 Views
19 Pages

Weighted Color Image Encryption Algorithm Based on RNA Extended Dynamic Coding and Quantum Chaotic System

  • Xiangyu Zhang,
  • Heping Wen,
  • Wei Feng,
  • Shenghao Kang,
  • Zhiyu Xie,
  • Xuexi Zhang and
  • Yiting Lin

11 August 2025

The rapid development of Internet technology, while providing convenient services for users, has also aroused deep concern among the public about the issue of privacy leakage during image data transmission. To address this situation, this article pro...

  • Article
  • Open Access
2 Citations
3,499 Views
20 Pages

11 August 2025

There is much confusion about the apparent opposition between Darwinian evolution and the second law of thermodynamics. Both entropy and entropy production play more fundamental roles in the origin of life and Darwinian evolution than is generally re...

  • Article
  • Open Access
1 Citations
1,468 Views
24 Pages

10 August 2025

Adsorption of multicomponent mixtures on solid substrates is essential to numerous technological processes and provides key insights into surface phenomena. Despite advancements in theoretical modeling, many approaches still assume that each adsorbat...

  • Article
  • Open Access
5 Citations
1,361 Views
14 Pages

10 August 2025

In this work, we investigate the quantum coherence and purity in hydrogen atoms under dissipative dynamics, with a focus on the hyperfine structure states arising from the electron–proton spin interaction. Using the Lindblad master equation, we...

  • Article
  • Open Access
962 Views
14 Pages

9 August 2025

Research on network robustness has long focused on changes in the structure connectivity of networks under attacks, effectively depicting structural integrity while ignoring the exploration of functional integrity. When the core path of the network i...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,806 Views
23 Pages

9 August 2025

Active inference offers a unified framework in which agents can exhibit both goal-directed and epistemic behaviors. However, implementing policy search in high-dimensional continuous action spaces presents challenges in terms of scalability and stabi...

  • Article
  • Open Access
1,590 Views
26 Pages

8 August 2025

We study the generalization properties of stochastic optimization methods under adaptive data sampling schemes, focusing on the setting of pairwise learning, which is central to tasks like ranking, metric learning, and AUC maximization. Unlike pointw...

  • Article
  • Open Access
1 Citations
1,291 Views
18 Pages

8 August 2025

Motivated by task-oriented semantic communication and distributed learning systems, this paper studies a distributed indirect source coding problem where M correlated sources are independently encoded for a central decoder. The decoder has access to...

  • Article
  • Open Access
908 Views
15 Pages

Multifractal Nonlinearity in Behavior During a Computer Task with Increasing Difficulty: What Does It Teach Us?

  • Alix Bouni,
  • Laurent M. Arsac,
  • Olivier Chevalerias and
  • Veronique Deschodt-Arsac

8 August 2025

The complex systems approach to cognitive–motor processing values multifractal nonlinearity as a key formalism in understanding internal interactions across multiple scales that preserve adequate task-directed behaviors. By using a computer tas...

  • Feature Paper
  • Article
  • Open Access
1 Citations
3,272 Views
15 Pages

8 August 2025

This paper presents a theoretical optimization of an endoreversible compressor under steady-state conditions. A parametric study using finite-time thermodynamic principles highlights the effect of external irreversibilities on compressor performance....

  • Article
  • Open Access
1,220 Views
12 Pages

Signal Detection Based on Separable CNN for OTFS Communication Systems

  • Ying Wang,
  • Zixu Zhang,
  • Hang Li,
  • Tao Zhou and
  • Zhiqun Cheng

7 August 2025

This paper proposes a low-complexity signal detection method for orthogonal time frequency space (OTFS) communication systems, based on a separable convolutional neural network (SeCNN), termed SeCNN-OTFS. A novel SeparableBlock architecture is introd...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,191 Views
17 Pages

7 August 2025

One of the most popular and innovative methods to analyse signals is by using Ordinal Patterns (OPs). The OP encoding is based on transforming a (univariate) signal into a symbolic sequence of OPs, where each OP represents the number of permutations...

  • Article
  • Open Access
3 Citations
1,337 Views
23 Pages

Chaos-Based Color Image Encryption with JPEG Compression: Balancing Security and Compression Efficiency

  • Wei Zhang,
  • Xue Zheng,
  • Meng Xing,
  • Jingjing Yang,
  • Hai Yu and
  • Zhiliang Zhu

6 August 2025

In recent years, most proposed digital image encryption algorithms have primarily focused on encrypting raw pixel data, often neglecting the integration with image compression techniques. Image compression algorithms, such as JPEG, are widely utilize...

  • Article
  • Open Access
952 Views
23 Pages

6 August 2025

Multivariate space–time datasets are often collected at discrete, regularly monitored time intervals and are typically treated as components of time series in environmental science and other applied fields. To effectively characterize such data...

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Entropy - ISSN 1099-4300