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Entropy, Volume 21, Issue 11

November 2019 - 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
6 Citations
4,007 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
4,336 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
15 Citations
3,733 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
8,108 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
4,133 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
3,149 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
8 Citations
3,677 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
25 Citations
4,447 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
7,334 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
51 Citations
6,009 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
  • + 2 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...

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Entropy - ISSN 1099-4300