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Entropy, Volume 24, Issue 3

2022 March - 127 articles

Cover Story: Can mathematical models of the brain improve robotics? We summarise how active inference—a well-known description of brain function and behaviour from neuroscience—can be used to build effective autonomous systems that show state-of-the-art performance in several robotics settings. The key features of active inference could soon provide solutions to current technical challenges in robotics and advance human-centred robotic applications, including context-adaptive, safe and social robots, wearable devices, regulatory processes and neurotechnology. View this paper
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Articles (127)

  • Feature Paper
  • Article
  • Open Access
2 Citations
3,407 Views
11 Pages

21 March 2022

In this paper, we considered the representation power of local overlapping histograms for discrete binary signals. We give an algorithm that is linear in signal size and factorial in window size for producing the set of signals, which share a sequenc...

  • Article
  • Open Access
10 Citations
3,933 Views
17 Pages

Task’s Choice: Pruning-Based Feature Sharing (PBFS) for Multi-Task Learning

  • Ying Chen,
  • Jiong Yu,
  • Yutong Zhao,
  • Jiaying Chen and
  • Xusheng Du

21 March 2022

In most of the existing multi-task learning (MTL) models, multiple tasks’ public information is learned by sharing parameters across hidden layers, such as hard sharing, soft sharing, and hierarchical sharing. One promising approach is to intro...

  • Article
  • Open Access
3 Citations
3,122 Views
12 Pages

20 March 2022

An enhanced affine projection algorithm (APA) is proposed to improve the filter performance in aspects of convergence rate and steady-state estimation error, since the adjustment of the input-vector number can be an effective way to increase the conv...

  • Review
  • Open Access
6 Citations
4,087 Views
31 Pages

GDP vs. LDP: A Survey from the Perspective of Information-Theoretic Channel

  • Hai Liu,
  • Changgen Peng,
  • Youliang Tian,
  • Shigong Long,
  • Feng Tian and
  • Zhenqiang Wu

19 March 2022

The existing work has conducted in-depth research and analysis on global differential privacy (GDP) and local differential privacy (LDP) based on information theory. However, the data privacy preserving community does not systematically review and an...

  • Article
  • Open Access
5 Citations
3,542 Views
12 Pages

19 March 2022

The mechanism of cerebral blood flow autoregulation can be of great importance in diagnosing and controlling a diversity of cerebrovascular pathologies such as vascular dementia, brain injury, and neurodegenerative diseases. To assess it, there are s...

  • Article
  • Open Access
2 Citations
2,867 Views
11 Pages

19 March 2022

An end-to-end joint source–channel (JSC) encoding matrix and a JSC decoding scheme using the proposed bit flipping check (BFC) algorithm and controversial variable node selection-based adaptive belief propagation (CVNS-ABP) decoding algorithm a...

  • Article
  • Open Access
12 Citations
4,206 Views
14 Pages

A Soar-Based Space Exploration Algorithm for Mobile Robots

  • Fei Luo,
  • Qin Zhou,
  • Joel Fuentes,
  • Weichao Ding and
  • Chunhua Gu

19 March 2022

Space exploration is a hot topic in the application field of mobile robots. Proposed solutions have included the frontier exploration algorithm, heuristic algorithms, and deep reinforcement learning. However, these methods cannot solve space explorat...

  • Article
  • Open Access
14 Citations
10,799 Views
19 Pages

19 March 2022

Offline hand-drawn diagram recognition is concerned with digitizing diagrams sketched on paper or whiteboard to enable further editing. Some existing models can identify the individual objects like arrows and symbols, but they become involved in the...

  • Article
  • Open Access
5 Citations
3,479 Views
12 Pages

Low-Complexity Chase Decoding of Reed–Solomon Codes Using Channel Evaluation

  • Hao Wang,
  • Wei Zhang,
  • Yanyan Chang,
  • Jiajing Gao and
  • Yanyan Liu

18 March 2022

A novel time-varying channel adaptive low-complexity chase (LCC) algorithm with low redundancy is proposed, where only the necessary number of test vectors (TVs) are generated and key equations are calculated according to the channel evaluation to re...

  • Article
  • Open Access
13 Citations
6,747 Views
25 Pages

Coupled VAE: Improved Accuracy and Robustness of a Variational Autoencoder

  • Shichen Cao,
  • Jingjing Li,
  • Kenric P. Nelson and
  • Mark A. Kon

18 March 2022

We present a coupled variational autoencoder (VAE) method, which improves the accuracy and robustness of the model representation of handwritten numeral images. The improvement is measured in both increasing the likelihood of the reconstructed images...

  • Article
  • Open Access
1 Citations
3,169 Views
13 Pages

Entropy Analysis of Neonatal Electrodermal Activity during the First Three Days after Birth

  • Zuzana Visnovcova,
  • Marek Kozar,
  • Zuzana Kuderava,
  • Mirko Zibolen,
  • Nikola Ferencova and
  • Ingrid Tonhajzerova

17 March 2022

The entropy-based parameters determined from the electrodermal activity (EDA) biosignal evaluate the complexity within the activity of the sympathetic cholinergic system. We focused on the evaluation of the complex sympathetic cholinergic regulation...

  • Feature Paper
  • Article
  • Open Access
13 Citations
6,962 Views
21 Pages

17 March 2022

By calculating the Kullback–Leibler divergence between two probability measures belonging to different exponential families dominated by the same measure, we obtain a formula that generalizes the ordinary Fenchel–Young divergence. Inspire...

  • Article
  • Open Access
11 Citations
3,072 Views
12 Pages

H Observer Based on Descriptor Systems Applied to Estimate the State of Charge

  • Shengya Meng,
  • Shihong Li,
  • Heng Chi,
  • Fanwei Meng and
  • Aiping Pang

17 March 2022

This paper proposes an H observer based on descriptor systems to estimate the state of charge (SOC). The battery’s open-current voltage is chosen as a generalized state variable, thereby avoiding the artificial derivative calculation of...

  • Feature Paper
  • Article
  • Open Access
1 Citations
3,102 Views
15 Pages

17 March 2022

We reconsider model II of Orban et al. (J. Chem. Phys. 1968, 49, 1778–1783), a two-dimensional lattice-gas system featuring a crystalline phase and two distinct fluid phases (liquid and vapor). In this system, a particle prevents other par...

  • Article
  • Open Access
11 Citations
3,213 Views
23 Pages

Adaptive Hurst-Sensitive Active Queue Management

  • Dariusz Marek,
  • Jakub Szyguła,
  • Adam Domański,
  • Joanna Domańska,
  • Katarzyna Filus and
  • Marta Szczygieł

17 March 2022

An Active Queue Management (AQM) mechanism, recommended by the Internet Engineering Task Force (IETF), increases the efficiency of network transmission. An example of this type of algorithm can be the Random Early Detection (RED) algorithm. The behav...

  • Feature Paper
  • Article
  • Open Access
17 Citations
4,785 Views
12 Pages

A Robust Protocol for Entropy Measurement in Mesoscopic Circuits

  • Timothy Child,
  • Owen Sheekey,
  • Silvia Lüscher,
  • Saeed Fallahi,
  • Geoffrey C. Gardner,
  • Michael Manfra and
  • Joshua Folk

17 March 2022

Previous measurements utilizing Maxwell relations to measure change in entropy, S, demonstrated remarkable accuracy in measuring the spin-1/2 entropy of electrons in a weakly coupled quantum dot. However, these previous measurements relied upon prior...

  • Article
  • Open Access
10 Citations
3,365 Views
17 Pages

16 March 2022

Pressure drop, heat transfer, and energy performance of ZnO/water nanofluid with rodlike particles flowing through a curved pipe are studied in the range of Reynolds number 5000 ≤ Re ≤ 30,000, particle volume concentration 0.1% ≤ Φ ≤...

  • Article
  • Open Access
3,091 Views
17 Pages

16 March 2022

Recently, flow models parameterized by neural networks have been used to design efficient Markov chain Monte Carlo (MCMC) transition kernels. However, inefficient utilization of gradient information of the target distribution or the use of volume-pre...

  • Article
  • Open Access
20 Citations
4,190 Views
17 Pages

Speaker Recognition Using Constrained Convolutional Neural Networks in Emotional Speech

  • Nikola Simić,
  • Siniša Suzić,
  • Tijana Nosek,
  • Mia Vujović,
  • Zoran Perić,
  • Milan Savić and
  • Vlado Delić

16 March 2022

Speaker recognition is an important classification task, which can be solved using several approaches. Although building a speaker recognition model on a closed set of speakers under neutral speaking conditions is a well-researched task and there are...

  • Article
  • Open Access
6 Citations
4,011 Views
23 Pages

ABCAttack: A Gradient-Free Optimization Black-Box Attack for Fooling Deep Image Classifiers

  • Han Cao,
  • Chengxiang Si,
  • Qindong Sun,
  • Yanxiao Liu,
  • Shancang Li and
  • Prosanta Gope

15 March 2022

The vulnerability of deep neural network (DNN)-based systems makes them susceptible to adversarial perturbation and may cause classification task failure. In this work, we propose an adversarial attack model using the Artificial Bee Colony (ABC) algo...

  • Article
  • Open Access
6 Citations
2,869 Views
16 Pages

Multiband Spectrum Sensing Based on the Sample Entropy

  • Yanqueleth Molina-Tenorio,
  • Alfonso Prieto-Guerrero and
  • Rafael Aguilar-Gonzalez

15 March 2022

Cognitive radios represent a real alternative to the scarcity of the radio spectrum. One of the primary tasks of these radios is the detection of possible gaps in a given bandwidth used by licensed users (called also primary users). This task, called...

  • Article
  • Open Access
1 Citations
5,850 Views
15 Pages

15 March 2022

This paper elaborates on the interpretation of time and entanglement, offering insights into the possible ontological nature of information in the emergence of spacetime, towards a quantum description of gravity. We first investigate different perspe...

  • Article
  • Open Access
1 Citations
2,982 Views
15 Pages

15 March 2022

Characterizing the topology and random walk of a random network is difficult because the connections in the network are uncertain. We propose a class of the generalized weighted Koch network by replacing the triangles in the traditional Koch network...

  • Article
  • Open Access
14 Citations
5,537 Views
15 Pages

A Hybrid Method Using HAVOK Analysis and Machine Learning for Predicting Chaotic Time Series

  • Jinhui Yang,
  • Juan Zhao,
  • Junqiang Song,
  • Jianping Wu,
  • Chengwu Zhao and
  • Hongze Leng

15 March 2022

The prediction of chaotic time series systems has remained a challenging problem in recent decades. A hybrid method using Hankel Alternative View Of Koopman (HAVOK) analysis and machine learning (HAVOK-ML) is developed to predict chaotic time series....

  • Article
  • Open Access
3 Citations
2,699 Views
11 Pages

f-Gintropy: An Entropic Distance Ranking Based on the Gini Index

  • Tamás Sándor Biró,
  • András Telcs,
  • Máté Józsa and
  • Zoltán Néda

14 March 2022

We consider an entropic distance analog quantity based on the density of the Gini index in the Lorenz map, i.e., gintropy. Such a quantity might be used for pairwise mapping and ranking between various countries and regions based on income and wealth...

  • Article
  • Open Access
5 Citations
2,735 Views
10 Pages

14 March 2022

An approach for the cryptographic security enhancement of encryption is proposed and analyzed. The enhancement is based on the employment of a coding scheme and degradation of the ciphertext. From the perspective of the legitimate parties that share...

  • Article
  • Open Access
3 Citations
3,080 Views
38 Pages

14 March 2022

Differential privacy (DP) has become a de facto standard to achieve data privacy. However, the utility of DP solutions with the premise of privacy priority is often unacceptable in real-world applications. In this paper, we propose the best-effort di...

  • Feature Paper
  • Article
  • Open Access
54 Citations
11,873 Views
34 Pages

13 March 2022

We consider the “partial information decomposition” (PID) problem, which aims to decompose the information that a set of source random variables provide about a target random variable into separate redundant, synergistic, union, and uniqu...

  • Article
  • Open Access
10 Citations
3,903 Views
23 Pages

13 March 2022

A data-driven prediction method is proposed to predict the soft fault and estimate the service life of a DC–DC-converter circuit. First, based on adaptive online non-bias least-square support-vector machine (AONBLSSVM) and the double-population...

  • Article
  • Open Access
3 Citations
3,338 Views
25 Pages

13 March 2022

Intuitively, the level of autonomy of an agent is related to the degree to which the agent’s goals and behaviour are decoupled from the immediate control by the environment. Here, we capitalise on a recent information-theoretic formulation of a...

  • Article
  • Open Access
4 Citations
2,551 Views
13 Pages

13 March 2022

Asymmetric behaviour has been documented in unemployment rates which increase quickly in recessions but decline relatively slowly during expansions. To model such asymmetric dynamics, this paper provides a rigorous derivation of the asymmetric mean-r...

  • Article
  • Open Access
8 Citations
2,371 Views
15 Pages

13 March 2022

In several applications, the assumption of normality is often violated in data with some level of skewness, so skewness affects the mean’s estimation. The class of skew–normal distributions is considered, given their flexibility for model...

  • Article
  • Open Access
17 Citations
6,768 Views
18 Pages

12 March 2022

With the development of Internet technology, short texts have gradually become the main medium for people to obtain information and communicate. Short text reduces the threshold of information production and reading by virtue of its short length, whi...

  • Article
  • Open Access
5 Citations
2,258 Views
10 Pages

12 March 2022

In this paper, four kinds of shadowing properties in non-autonomous discrete dynamical systems (NDDSs) are discussed. It is pointed out that if an NDDS has a F-shadowing property (resp. ergodic shadowing property, d¯ shadowing property, d̲...

  • Article
  • Open Access
2 Citations
3,012 Views
26 Pages

Minimum Adversarial Examples

  • Zhenyu Du,
  • Fangzheng Liu and
  • Xuehu Yan

12 March 2022

Deep neural networks in the area of information security are facing a severe threat from adversarial examples (AEs). Existing methods of AE generation use two optimization models: (1) taking the successful attack as the objective function and limitin...

  • Article
  • Open Access
4 Citations
3,007 Views
23 Pages

Memory Effects in High-Dimensional Systems Faithfully Identified by Hilbert–Schmidt Speed-Based Witness

  • Kobra Mahdavipour,
  • Mahshid Khazaei Shadfar,
  • Hossein Rangani Jahromi,
  • Roberto Morandotti and
  • Rosario Lo Franco

12 March 2022

A witness of non-Markovianity based on the Hilbert–Schmidt speed (HSS), a special type of quantum statistical speed, has been recently introduced for low-dimensional quantum systems. Such a non-Markovianity witness is particularly useful, being...

  • Article
  • Open Access
38 Citations
9,996 Views
14 Pages

11 March 2022

Quantum machine learning is a promising application of quantum computing for data classification. However, most of the previous research focused on binary classification, and there are few studies on multi-classification. The major challenge comes fr...

  • Article
  • Open Access
55 Citations
7,362 Views
20 Pages

CT and MRI Medical Image Fusion Using Noise-Removal and Contrast Enhancement Scheme with Convolutional Neural Network

  • Jameel Ahmed Bhutto,
  • Lianfang Tian,
  • Qiliang Du,
  • Zhengzheng Sun,
  • Lubin Yu and
  • Muhammad Faizan Tahir

11 March 2022

Medical image fusion (MIF) has received painstaking attention due to its diverse medical applications in response to accurately diagnosing clinical images. Numerous MIF methods have been proposed to date, but the fused image suffers from poor contras...

  • Article
  • Open Access
4 Citations
3,870 Views
21 Pages

11 March 2022

The II law of thermodynamics is most often given in three supposedly equivalent formulations: two Clausius (I and II) and one Kelvin. The most general and indisputable entropy formulation belongs to Clausius (II). The earlier Clausius I principle det...

  • Article
  • Open Access
1 Citations
3,061 Views
15 Pages

11 March 2022

In this paper, we focus on some aspects of the relation of spacetime and quantum mechanics and the study counterparts (in Set) of the categorical local symmetries of smooth 4-manifolds. In the set-theoretic limit, there emerge some exotic smoothness...

  • Review
  • Open Access
36 Citations
8,365 Views
18 Pages

11 March 2022

The availability of powerful non-invasive neuroimaging techniques has given rise to various studies that aim to map the human brain. These studies focus on not only finding brain activation signatures but also on understanding the overall organizatio...

  • Feature Paper
  • Review
  • Open Access
5 Citations
4,246 Views
21 Pages

10 March 2022

Stochastic resonance in clusters of major histocompatibility molecules is extended by a more detailed description of adaptive thresholding and by applying the notion of suprathreshold stochastic resonance as a stochastically quantizing encoder of tra...

  • Article
  • Open Access
14 Citations
4,078 Views
23 Pages

Metaheuristic Algorithms Based on Compromise Programming for the Multi-Objective Urban Shipment Problem

  • Tung Son Ngo,
  • Jafreezal Jaafar,
  • Izzatdin Abdul Aziz,
  • Muhammad Umar Aftab,
  • Hoang Giang Nguyen and
  • Ngoc Anh Bui

9 March 2022

The Vehicle Routing Problem (VRP) and its variants are found in many fields, especially logistics. In this study, we introduced an adaptive method to a complex VRP. It combines multi-objective optimization and several forms of VRPs with practical req...

  • Article
  • Open Access
11 Citations
3,456 Views
25 Pages

9 March 2022

Missing covariates in regression or classification problems can prohibit the direct use of advanced tools for further analysis. Recent research has realized an increasing trend towards the use of modern Machine-Learning algorithms for imputation. Thi...

  • Article
  • Open Access
7 Citations
3,694 Views
11 Pages

The Generalized Euler Characteristics of the Graphs Split at Vertices

  • Omer Farooq,
  • Michał Ławniczak,
  • Afshin Akhshani,
  • Szymon Bauch and
  • Leszek Sirko

9 March 2022

We show that there is a relationship between the generalized Euler characteristic Eo(|VDo|) of the original graph that was split at vertices into two disconnected subgraphs i=1,2 and their generalized Euler characteristics Ei(|VDi|). Here, |VDo| and...

  • Article
  • Open Access
4 Citations
7,254 Views
14 Pages

9 March 2022

We consider the role information energy can play as a source of dark energy. Firstly, we note that if stars and structure had not formed in the universe, elemental bits of information describing the attributes of particles would have exhibited proper...

  • Article
  • Open Access
12 Citations
3,236 Views
20 Pages

A Novel and Fast Encryption System Based on Improved Josephus Scrambling and Chaotic Mapping

  • Zhaoxiong Guan ,
  • Junxian Li,
  • Linqing Huang,
  • Xiaoming Xiong,
  • Yuan Liu and
  • Shuting Cai

9 March 2022

To address the shortcomings of weak confusion and high time complexity of the existing permutation algorithms, including the traditional Josephus ring permutation (TJRP), an improved Josephus ring-based permutation (IJRBP) algorithm is developed. The...

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Entropy - ISSN 1099-4300