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Entropy, Volume 25, Issue 10

October 2023 - 110 articles

Cover Story: A Monte Carlo approach is proposed for implementing Lynden–Bell (LB) entropy maximization for systems with long range interactions. The direct maximization of LB entropy for an arbitrary initial particle distribution requires an infinite number of Lagrange multipliers, limiting its applicability. The present approach discretizes the initial particle distribution into density levels, which are then evolved to LB equilibrium using a Monte Carlo method. A comparison with Molecular Dynamics (MD) simulations reveals that initial distributions do not fully relax at the maximum of LB entropy. In particular, the stationary particle distributions obtained using MD simulations exhibit a hard cutoff, instead of a soft tail predicted by the LB theory. View this paper
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Articles (110)

  • Article
  • Open Access
6 Citations
4,241 Views
16 Pages

23 October 2023

In this study, advanced exergy and exergoeconomic analysis are applied to an Organic Rankine Cycle (ORC) for waste heat recovery to identify the potential for thermodynamic and economic improvement of the system (splitting the decision variables into...

  • Article
  • Open Access
1,869 Views
13 Pages

Gaussian and Lerch Models for Unimodal Time Series Forcasting

  • Azzouz Dermoune,
  • Daoud Ounaissi and
  • Yousri Slaoui

22 October 2023

We consider unimodal time series forecasting. We propose Gaussian and Lerch models for this forecasting problem. The Gaussian model depends on three parameters and the Lerch model depends on four parameters. We estimate the unknown parameters by mini...

  • Article
  • Open Access
1,813 Views
12 Pages

New Construction of Asynchronous Channel Hopping Sequences in Cognitive Radio Networks

  • Yaoxuan Wang,
  • Xianhua Niu,
  • Chao Qi,
  • Zhihang He and
  • Bosen Zeng

22 October 2023

The channel-hopping-based rendezvous is essential to alleviate the problem of under-utilization and scarcity of the spectrum in cognitive radio networks. It dynamically allows unlicensed secondary users to schedule rendezvous channels using the assig...

  • Article
  • Open Access
2 Citations
2,648 Views
16 Pages

21 October 2023

Link prediction remains paramount in knowledge graph embedding (KGE), aiming to discern obscured or non-manifest relationships within a given knowledge graph (KG). Despite the critical nature of this endeavor, contemporary methodologies grapple with...

  • Feature Paper
  • Article
  • Open Access
5 Citations
2,991 Views
29 Pages

TURBO: The Swiss Knife of Auto-Encoders

  • Guillaume Quétant,
  • Yury Belousov,
  • Vitaliy Kinakh and
  • Slava Voloshynovskiy

21 October 2023

We present a novel information-theoretic framework, termed as TURBO, designed to systematically analyse and generalise auto-encoding methods. We start by examining the principles of information bottleneck and bottleneck-based networks in the auto-enc...

  • Article
  • Open Access
3 Citations
3,103 Views
19 Pages

Dynamic Semi-Supervised Federated Learning Fault Diagnosis Method Based on an Attention Mechanism

  • Shun Liu,
  • Funa Zhou,
  • Shanjie Tang,
  • Xiong Hu,
  • Chaoge Wang and
  • Tianzhen Wang

21 October 2023

In cases where a client suffers from completely unlabeled data, unsupervised learning has difficulty achieving an accurate fault diagnosis. Semi-supervised federated learning with the ability for interaction between a labeled client and an unlabeled...

  • Article
  • Open Access
158 Citations
11,085 Views
22 Pages

Diffusion Probabilistic Modeling for Video Generation

  • Ruihan Yang,
  • Prakhar Srivastava and
  • Stephan Mandt

20 October 2023

Denoising diffusion probabilistic models are a promising new class of generative models that mark a milestone in high-quality image generation. This paper showcases their ability to sequentially generate video, surpassing prior methods in perceptual...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,447 Views
29 Pages

20 October 2023

Variational inference provides a way to approximate probability densities through optimization. It does so by optimizing an upper or a lower bound of the likelihood of the observed data (the evidence). The classic variational inference approach sugge...

  • Article
  • Open Access
9 Citations
2,831 Views
17 Pages

Denoising Vanilla Autoencoder for RGB and GS Images with Gaussian Noise

  • Armando Adrián Miranda-González,
  • Alberto Jorge Rosales-Silva,
  • Dante Mújica-Vargas,
  • Ponciano Jorge Escamilla-Ambrosio,
  • Francisco Javier Gallegos-Funes,
  • Jean Marie Vianney-Kinani,
  • Erick Velázquez-Lozada,
  • Luis Manuel Pérez-Hernández and
  • Lucero Verónica Lozano-Vázquez

20 October 2023

Noise suppression algorithms have been used in various tasks such as computer vision, industrial inspection, and video surveillance, among others. The robust image processing systems need to be fed with images closer to a real scene; however, sometim...

  • Feature Paper
  • Article
  • Open Access
2 Citations
1,729 Views
37 Pages

19 October 2023

We introduce the problem of variable-length (VL) source resolvability, in which a given target probability distribution is approximated by encoding a VL uniform random number, and the asymptotically minimum average length rate of the uniform random n...

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Entropy - ISSN 1099-4300