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Entropy, Volume 21, Issue 11

2019 November - 105 articles

Cover Story: We applied the measures of axiomatically proposed transfer entropy (TE) and the first principle-based information flow (IF) from information theory to detect and quantify climate interactions. As estimating TE is quite challenging, we applied various estimators of TE to idealized test cases and measured their sensitivity on sample size. We propose composite use of TE-kernel and TE-k-nearest neighbour with parameter testing in addition to TE-linear and IF-linear for linear systems. A two way realistic Indo-Pacific coupling is detected, however, an unrealistic information exchange from European air temperatures to NAO was also detected, which hints at a hidden driving process. Hence, the limitations, time series length, and the system at hand must be taken into account before drawing any conclusions from TE and IF-linear estimations. View this paper
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Articles (105)

  • Article
  • Open Access
8 Citations
5,971 Views
26 Pages

19 November 2019

β-Lactamases are enzymes produced by bacteria to hydrolyze β-lactam-based antibiotics, and pose serious threat to public health through related antibiotic resistance. Class A β-lactamases are structurally and functionally related to pe...

  • Article
  • Open Access
32 Citations
4,316 Views
21 Pages

19 November 2019

We consider measurement based single temperature quantum heat engine without feedback control, introduced recently by Yi, Talkner and Kim [Phys. Rev. E 96, 022108 (2017)]. Taking the working medium of the engine to be a one-dimensional Heisenberg mod...

  • Article
  • Open Access
20 Citations
5,417 Views
20 Pages

A Secure and Robust Image Hashing Scheme Using Gaussian Pyramids

  • Iram Bashir,
  • Fawad Ahmed,
  • Jawad Ahmad,
  • Wadii Boulila and
  • Nouf Alharbi

19 November 2019

Image hash is an alternative to cryptographic hash functions for checking integrity of digital images. Compared to cryptographic hash functions, an image hash or a Perceptual Hash Function (PHF) is resilient to content preserving distortions and sens...

  • Article
  • Open Access
17 Citations
3,664 Views
20 Pages

Solvability of the p-Adic Analogue of Navier–Stokes Equation via the Wavelet Theory

  • Ehsan Pourhadi,
  • Andrei Khrennikov,
  • Reza Saadati,
  • Klaudia Oleschko and
  • María de Jesús Correa Lopez

17 November 2019

P-adic numbers serve as the simplest ultrametric model for the tree-like structures arising in various physical and biological phenomena. Recently p-adic dynamical equations started to be applied to geophysics, to model propagation of fluids (oil, wa...

  • Article
  • Open Access
6 Citations
4,064 Views
26 Pages

Multisensor Estimation Fusion with Gaussian Process for Nonlinear Dynamic Systems

  • Yiwei Liao,
  • Jiangqiong Xie,
  • Zhiguo Wang and
  • Xiaojing Shen

16 November 2019

The Gaussian process is gaining increasing importance in different areas such as signal processing, machine learning, robotics, control and aerospace and electronic systems, since it can represent unknown system functions by posterior probability. Th...

  • Article
  • Open Access
11 Citations
5,237 Views
14 Pages

16 November 2019

Extracting structural information from sequence co-variation has become a common computational biology practice in the recent years, mainly due to the availability of large sequence alignments of protein families. However, identifying features that a...

  • Article
  • Open Access
17 Citations
5,782 Views
11 Pages

Complexity-Based Measures of Postural Sway during Walking at Different Speeds and Durations Using Multiscale Entropy

  • Ben-Yi Liau,
  • Fu-Lien Wu,
  • Chi-Wen Lung,
  • Xueyan Zhang,
  • Xiaoling Wang and
  • Yih-Kuen Jan

16 November 2019

Participation in various physical activities requires successful postural control in response to the changes in position of our body. It is important to assess postural control for early detection of falls and foot injuries. Walking at various speeds...

  • Article
  • Open Access
15 Citations
3,021 Views
16 Pages

15 November 2019

Endoreversible thermodynamics is a finite time thermodynamics ansatz based on the assumption that reversible or equilibrated subsystems of a system interact via reversible or irreversible energy transfers. This gives a framework where irreversibiliti...

  • Article
  • Open Access
4 Citations
3,852 Views
5 Pages

A Note on Graphs with Prescribed Orbit Structure

  • Abbe Mowshowitz,
  • Matthias Dehmer and
  • Frank Emmert-Streib

15 November 2019

This paper presents a proof of the existence of connected, undirected graphs with prescribed orbit structure, giving an explicit construction procedure for these graphs. Trees with prescribed orbit structure are also investigated.

  • Article
  • Open Access
9 Citations
3,690 Views
14 Pages

15 November 2019

Cascading failures are the significant cause of network breakdowns in a variety of complex infrastructure systems. Given such a system, uncovering the dependence of cascading failures on its underlying topology is essential but still not well explore...

  • Article
  • Open Access
6 Citations
4,044 Views
22 Pages

15 November 2019

Previously, we developed a high throughput non-parametric maximum entropy method (PLOS ONE, 13(5): e0196937, 2018) that employs a log-likelihood scoring function to characterize uncertainty in trial probability density estimates through a scaled quan...

  • Article
  • Open Access
15 Citations
4,372 Views
22 Pages

Distribution Structure Learning Loss (DSLL) Based on Deep Metric Learning for Image Retrieval

  • Lili Fan,
  • Hongwei Zhao,
  • Haoyu Zhao,
  • Pingping Liu and
  • Huangshui Hu

15 November 2019

The massive number of images demands highly efficient image retrieval tools. Deep distance metric learning (DDML) is proposed to learn image similarity metrics in an end-to-end manner based on the convolution neural network, which has achieved encour...

  • Article
  • Open Access
16 Citations
3,768 Views
16 Pages

15 November 2019

It is still an open issue to measure uncertainty of the basic probability assignment function under Dempster-Shafer theory framework, which is the foundation and preliminary work for conflict degree measurement and combination of evidences. This pape...

  • Article
  • Open Access
31 Citations
8,158 Views
13 Pages

15 November 2019

In this paper, we analyze information flows between communities of financial markets, represented as complex networks. Each community, typically corresponding to a business sector, represents a significant part of the financial market and the detecti...

  • Article
  • Open Access
12 Citations
4,157 Views
19 Pages

A Novel Residual Dense Pyramid Network for Image Dehazing

  • Shibai Yin,
  • Yibin Wang and
  • Yee-Hong Yang

15 November 2019

Recently, convolutional neural network (CNN) based on the encoder-decoder structure have been successfully applied to image dehazing. However, these CNN based dehazing methods have two limitations: First, these dehazing models are large in size with...

  • Article
  • Open Access
3 Citations
3,166 Views
18 Pages

15 November 2019

Dimensionality reduction has always been a major problem for handling huge dimensionality datasets. Due to the utilization of labeled data, supervised dimensionality reduction methods such as Linear Discriminant Analysis tend achieve better classific...

  • Article
  • Open Access
25 Citations
4,482 Views
15 Pages

Complex Chaotic Attractor via Fractal Transformation

  • Shengqiu Dai,
  • Kehui Sun,
  • Shaobo He and
  • Wei Ai

14 November 2019

Based on simplified Lorenz multiwing and Chua multiscroll chaotic systems, a rotation compound chaotic system is presented via transformation. Based on a binary fractal algorithm, a new ternary fractal algorithm is proposed. In the ternary fractal al...

  • Article
  • Open Access
27 Citations
7,375 Views
8 Pages

Information Flow between Bitcoin and Other Investment Assets

  • Sung Min Jang,
  • Eojin Yi,
  • Woo Chang Kim and
  • Kwangwon Ahn

14 November 2019

This paper studies the causal relationship between Bitcoin and other investment assets. We first test Granger causality and then calculate transfer entropy as an information-theoretic approach. Unlike the Granger causality test, we discover that tran...

  • Article
  • Open Access
8 Citations
3,693 Views
15 Pages

14 November 2019

A continuous path performed by the hand in a period of time is considered for the purpose of gesture recognition. Dynamic gestures recognition is a complex topic since it spans from the conventional method of separating the hand from surrounding envi...

  • Article
  • Open Access
51 Citations
6,082 Views
18 Pages

Radiomics Analysis on Contrast-Enhanced Spectral Mammography Images for Breast Cancer Diagnosis: A Pilot Study

  • Liliana Losurdo,
  • Annarita Fanizzi,
  • Teresa Maria A. Basile,
  • Roberto Bellotti,
  • Ubaldo Bottigli,
  • Rosalba Dentamaro,
  • Vittorio Didonna,
  • Vito Lorusso,
  • Raffaella Massafra and
  • Daniele La Forgia
  • + 3 authors

13 November 2019

Contrast-enhanced spectral mammography is one of the latest diagnostic tool for breast care; therefore, the literature is poor in radiomics image analysis useful to drive the development of automatic diagnostic support systems. In this work, we propo...

  • Article
  • Open Access
7 Citations
7,174 Views
15 Pages

13 November 2019

Investor behavior is one of the important factors that affects market liquidity. It is very interesting to find out how investor behavior affects stock market liquidity. The Investor sentiment changes and information cognitive ability affect not only...

  • Article
  • Open Access
8 Citations
4,688 Views
24 Pages

13 November 2019

Understanding the structuration of spatio-temporal information is a common endeavour to many disciplines and application domains, e.g., geography, ecology, urban planning, epidemiology. Revealing the processes involved, in relation to one or more phe...

  • Article
  • Open Access
3,583 Views
21 Pages

13 November 2019

In this paper, we study the geometry data associated with disparity map or depth map images in order to extract easy to compress polynomial surface models at different bitrates, proposing an efficient mining strategy for geometry information. The seg...

  • Article
  • Open Access
30 Citations
5,049 Views
16 Pages

12 November 2019

It is well accepted that the second law of thermodynamics describes an irreversible process, which can be reflected by the entropy increase. Irreversible creep and fatigue damage can also be represented by a gradually increasing damage parameter. In...

  • Article
  • Open Access
4 Citations
3,167 Views
24 Pages

Application of a Novel Adaptive Med Fault Diagnosis Method in Gearboxes

  • Wenhua Du,
  • Xiaoming Guo,
  • Xiaofeng Han,
  • Junyuan Wang,
  • Jie Zhou,
  • Zhijian Wang,
  • Xingyan Yao,
  • Yanjun Shao and
  • Guanjun Wang

12 November 2019

Minimum entropy deconvolution (MED) is not effective in extracting fault features in strong noise environments, which can easily lead to misdiagnosis. Moreover, the noise reduction effect of MED is affected by the size of the filter. In the face of d...

  • Article
  • Open Access
2 Citations
3,590 Views
19 Pages

Modeling the Disorder of Closed System by Multi-Agent Based Simulation

  • Krzysztof Małecki,
  • Tomasz M. Gwizdałła and
  • Paweł Bieńko

12 November 2019

Mess (disorder)—there are many different meanings related to this problem. The explicit majority comes from the area of philosophical, social and medical sciences. In our paper, we try to present the engineering aspect of the concept of disorde...

  • Article
  • Open Access
10 Citations
3,758 Views
20 Pages

Hypergraph Contextuality

  • Mladen Pavičić

12 November 2019

Quantum contextuality is a source of quantum computational power and a theoretical delimiter between classical and quantum structures. It has been substantiated by numerous experiments and prompted generation of state independent contextual sets, tha...

  • Article
  • Open Access
8 Citations
4,073 Views
16 Pages

12 November 2019

The Bayesian approach Maximum a Posteriori (MAP) provides a common basis for developing statistical methods for solving ill-posed image reconstruction problems. MAP solutions are dependent on a priori model. Approaches developed in literature are bas...

  • Article
  • Open Access
1 Citations
3,683 Views
18 Pages

12 November 2019

We consider estimating the marginal likelihood in settings with independent and identically distributed (i.i.d.) data. We propose estimating the predictive distributions in a sequential factorization of the marginal likelihood in such settings by usi...

  • Article
  • Open Access
5 Citations
2,662 Views
15 Pages

11 November 2019

The generalized maximum correntropy criterion (GMCC) algorithm is computationally simple and robust against impulsive noise but it suffers from slow convergence speed as it is derived and based on stochastic gradient, which only use the current data...

  • Article
  • Open Access
8 Citations
3,691 Views
16 Pages

11 November 2019

A unidimensional continuous-variable quantum key distribution protocol with untrusted detection is proposed, where the two legitimate partners send unidimensional modulated or Gaussian-modulated coherent states to an untrusted third party, i.e., Char...

  • Article
  • Open Access
13 Citations
3,025 Views
14 Pages

11 November 2019

The project delivery mode is an extremely important link in the life cycle of water engineering. Many cases show that increases in the costs, construction period, and claims in the course of the implementation of water engineering are related to the...

  • Article
  • Open Access
7 Citations
4,887 Views
25 Pages

11 November 2019

Over the past few years, online learning has exploded in popularity due to the potentially unlimited enrollment, lack of geographical limitations, and free accessibility of many courses. However, learners are prone to have poor performance due to the...

  • Article
  • Open Access
5 Citations
3,962 Views
21 Pages

Voronoi Decomposition of Cardiovascular Dependency Structures in Different Ambient Conditions: An Entropy Study

  • Dragana Bajic,
  • Tamara Skoric,
  • Sanja Milutinovic-Smiljanic and
  • Nina Japundzic-Zigon

11 November 2019

This paper proposes a method that maps the coupling strength of an arbitrary number of signals D, D ≥ 2, into a single time series. It is motivated by the inability of multiscale entropy to jointly analyze more than two signals. The coupling stren...

  • Article
  • Open Access
4 Citations
4,397 Views
21 Pages

Dynamical Sampling with Langevin Normalization Flows

  • Minghao Gu,
  • Shiliang Sun and
  • Yan Liu

10 November 2019

In Bayesian machine learning, sampling methods provide the asymptotically unbiased estimation for the inference of the complex probability distributions, where Markov chain Monte Carlo (MCMC) is one of the most popular sampling methods. However, MCMC...

  • Article
  • Open Access
5 Citations
2,689 Views
13 Pages

10 November 2019

Playing the Cournot duopoly in the quantum domain can lead to the optimal strategy profile in the case of maximally correlated actions of the players. However, that result can be obtained if the fact that the players play the quantum game is common k...

  • Article
  • Open Access
16 Citations
3,081 Views
13 Pages

10 November 2019

Framelets theory has been well studied in many applications in image processing, data recovery and computational analysis due to the key properties of framelets such as sparse representation and accuracy in coefficients recovery in the area of numeri...

  • Feature Paper
  • Article
  • Open Access
7 Citations
6,658 Views
28 Pages

Quantification of Information Exchange in Idealized and Climate System Applications

  • Praveen Kumar Pothapakula,
  • Cristina Primo and
  • Bodo Ahrens

8 November 2019

Often in climate system studies, linear and symmetric statistical measures are applied to quantify interactions among subsystems or variables. However, they do not allow identification of the driving and responding subsystems. Therefore, in this stud...

  • Article
  • Open Access
6 Citations
3,773 Views
25 Pages

8 November 2019

Because perceptual video coding (PVC) can reduce bitrates with negligible visual quality loss in video compression, a PVC scheme based on just noticeable distortion (JND) model is proposed for ultra-high definition video. Firstly, the proposed JND mo...

  • Article
  • Open Access
8 Citations
5,012 Views
12 Pages

Risk Management in E-Commerce—A Fraud Study Case Using Acoustic Analysis through Its Complexity

  • Diego C. Nascimento,
  • Bruno Barbosa,
  • André M. Perez,
  • Daniel O. Caires,
  • Edgar Hirama,
  • Pedro L. Ramos and
  • Francisco Louzada

7 November 2019

This work aimed to develop business intelligence towards fraud detection using buyer-placed information combined with the sound analysis from a confirmation purchase call. We used a dataset of 789 orders in 2018, provided by different e-commerce webs...

  • Article
  • Open Access
12 Citations
3,857 Views
19 Pages

Application of Spherical-Radial Cubature Bayesian Filtering and Smoothing in Bearings Only Passive Target Tracking

  • Wasiq Ali,
  • Yaan Li,
  • Zhe Chen,
  • Muhammad Asif Zahoor Raja,
  • Nauman Ahmed and
  • Xiao Chen

7 November 2019

In this paper, an application of spherical radial cubature Bayesian filtering and smoothing algorithms is presented to solve a typical underwater bearings only passive target tracking problem effectively. Generally, passive target tracking problems i...

  • Article
  • Open Access
49 Citations
3,510 Views
22 Pages

Truncated Inverted Kumaraswamy Generated Family of Distributions with Applications

  • Rashad A. R. Bantan,
  • Farrukh Jamal,
  • Christophe Chesneau and
  • Mohammed Elgarhy

7 November 2019

In this article, we introduce a new general family of distributions derived to the truncated inverted Kumaraswamy distribution (on the unit interval), called the truncated inverted Kumaraswamy generated family. Among its qualities, it is characterize...

  • Article
  • Open Access
16 Citations
6,049 Views
20 Pages

Toward Inferring Potts Models for Phylogenetically Correlated Sequence Data

  • Edwin Rodriguez Horta,
  • Pierre Barrat-Charlaix and
  • Martin Weigt

7 November 2019

Global coevolutionary models of protein families have become increasingly popular due to their capacity to predict residue–residue contacts from sequence information, but also to predict fitness effects of amino acid substitutions or to infer p...

  • Feature Paper
  • Article
  • Open Access
31 Citations
7,931 Views
22 Pages

Variational Autoencoder Reconstruction of Complex Many-Body Physics

  • Ilia A. Luchnikov,
  • Alexander Ryzhov,
  • Pieter-Jan Stas,
  • Sergey N. Filippov and
  • Henni Ouerdane

7 November 2019

Thermodynamics is a theory of principles that permits a basic description of the macroscopic properties of a rich variety of complex systems from traditional ones, such as crystalline solids, gases, liquids, and thermal machines, to more intricate sy...

  • Article
  • Open Access
3 Citations
3,164 Views
26 Pages

Secure Retrospective Interference Alignment

  • Mohamed Seif,
  • Ravi Tandon and
  • Ming Li

7 November 2019

In this paper, the K-user interference channel with secrecy constraints is considered with delayed channel state information at transmitters (CSIT). We propose a novel secure retrospective interference alignment scheme in which the transmitters caref...

  • Article
  • Open Access
7 Citations
3,723 Views
20 Pages

Kappa Distributions and Isotropic Turbulence

  • Elias Gravanis,
  • Evangelos Akylas,
  • Constantinos Panagiotou and
  • George Livadiotis

7 November 2019

In this work, the two-point probability density function (PDF) for the velocity field of isotropic turbulence is modeled using the kappa distribution and the concept of superstatistics. The PDF consists of a symmetric and an anti-symmetric part, whos...

  • Article
  • Open Access
21 Citations
5,175 Views
16 Pages

6 November 2019

Embedding learning on knowledge graphs (KGs) aims to encode all entities and relationships into a continuous vector space, which provides an effective and flexible method to implement downstream knowledge-driven artificial intelligence (AI) and natur...

  • Article
  • Open Access
11 Citations
3,946 Views
14 Pages

6 November 2019

In this paper, the risk pattern of e-bike riders in China was examined, based on tree-structured machine learning techniques. Three-year crash/violation data were acquired from the Kunshan traffic police department, China. Firstly, high-risk (HR) ele...

  • Article
  • Open Access
7 Citations
4,886 Views
11 Pages

Invariant Image-Based Currency Denomination Recognition Using Local Entropy and Range Filters

  • Hafeez Anwar,
  • Farman Ullah,
  • Asif Iqbal,
  • Anees Ul Hasnain,
  • Ata Ur Rehman,
  • Peter Bell and
  • Daehan Kwak

6 November 2019

We perform image-based denomination recognition of the Pakistani currency notes. There are a total of seven different denominations in the current series of Pakistani notes. Apart from color and texture, these notes differ from one another mainly due...

  • Article
  • Open Access
1 Citations
3,835 Views
9 Pages

6 November 2019

The role of convection in liquid thermoelectric cells may be difficult to predict because the inter- and intramolecular interactions are not currently incorporated into thermodynamic models. Here, we study the thermoelectric response of a series of f...

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Entropy - ISSN 1099-4300