Results 41 to 50 of about 224,912 (314)
Applied Sciences, 2023 In this study, the K-means algorithm based on particle swarm optimization (K-PSO) and game theory are introduced to establish the quality evaluation model of a rock mass.
Yunkai Ruan +9 more
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Entropy‐based benchmarking methods [PDF]
Statistica Neerlandica, 2018 This paper argues that benchmarking of sign‐volatile time series has to be based on the principle of movement and sign preservation, which requires the benchmarked series to reproduce both the short‐term movements and signs of the original series. It is shown that the widely used variants of Denton method and the Causey‐Trager growth rate preservation ...
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Energies, 2023 Aiming at the problems of the low integration of the current power information system security assessment method with classified protection 2.0, strong subjectivity, and the vague quantification of objective indexes, this article proposes to establish a ...
Gangjun Gong +6 more
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Euclidean methods and the entropy function [PDF]
Fortschritte der Physik, 2008 AbstractThe attractor mechanism implies that the supersymmetric black hole near horizon solution is defined only in terms of the conserved charges and is therefore independent of asymptotic moduli. Starting only with the near horizon geometry, Sen's entropy functional formalism computes the entropy of an extreme black hole by means of a Legendre ...
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Reliability assessment of water distribution systems with statistical entropy and other surrogate measures [PDF]
, 2010 There is ever increasing commercial and regulatory pressure to minimise the cost of water distribution networks even as the demand for them keeps on growing. But cost minimizing is only one of the demands placed on network design.
Tanyimboh, Tiku T. +5 more
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Comparison of Entropy Calculation Methods for Ransomware Encrypted File Identification
, 2022 Ransomware is a malicious class of software that utilises encryption to implement an attack on system availability. The target’s data remains encrypted and is held captive by the attacker until a ransom demand is met.
Davies, Simon R. +5 more
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Journal of Scientific Computing, 2019 Aerodynamic drag can be partially approximated by the entropy flux across fluid domain boundaries with a formula due to Oswatitsch. In this paper, we build the adjoint solution that corresponds to this representation of the drag and investigate its relation to the entropy variables, which are linked to the integrated residual of the entropy transport ...
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Entropy-based semi-fragile watermarking of remote sensing images in the wavelet domain
, 2019 This article presents a semi-fragile image tampering detection method for multi-band images. In the proposed scheme, a mark is embedded into remote sensing images, which have multiple frequential values for each pixel, applying tree-structured vector ...
Serra Ruiz, Jordi +5 more
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Shipin gongye ke-jiObjective: The differences in antioxidant activity of different polar parts of panax ginseng were investigated to screen the best active parts. Method: In this study, the water extract of Panax ginseng was extracted by petroleum ether, chloroform, ethyl ...
Zhijia XU +7 more
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The Cross-Entropy Method for Estimation [PDF]
, 2013 This chapter describes how difficult statistical estimation problems can often be solved efficiently by means of the cross-entropy (CE) method. The CE method can be viewed as an adaptive importance sampling procedure that uses the cross-entropy or Kullback–Leibler divergence as a measure of closeness between two sampling distributions. The CE method is
Kroese, Dirk P. +2 more
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