Results 41 to 50 of about 11,030 (203)

On empirical cumulant generating functions of code lengths for individual sequences

open access: yes, 2016
We consider the problem of lossless compression of individual sequences using finite-state (FS) machines, from the perspective of the best achievable empirical cumulant generating function (CGF) of the code length, i.e., the normalized logarithm of the ...
Merhav, Neri
core   +1 more source

Entropy linear response theory with non-Markovian bath

open access: yesJournal of High Energy Physics, 2021
We developed a perturbative calculation for entropy dynamics, which considers a sudden coupling between a system and a bath. The theory we developed can work in a general environment without Markovian approximation.
Yu Chen
doaj   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

open access: yesOikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade   +4 more
wiley   +1 more source

Entropic trade-off relations for quantum operations

open access: yes, 2013
Spectral properties of an arbitrary matrix can be characterized by the entropy of its rescaled singular values. Any quantum operation can be described by the associated dynamical matrix or by the corresponding superoperator.
C. Beck   +11 more
core   +1 more source

On Metric Choice in Dimension Reduction for Fréchet Regression

open access: yesInternational Statistical Review, EarlyView.
Summary Fréchet regression is becoming a mainstay in modern data analysis for analysing non‐traditional data types belonging to general metric spaces. This novel regression method is especially useful in the analysis of complex health data such as continuous monitoring and imaging data.
Abdul‐Nasah Soale   +3 more
wiley   +1 more source

Logarithmic singularities of Renyi entropy as a sign of chaos?

open access: yesJournal of High Energy Physics
We propose that the logarithmic singularities of the Renyi entropy of local-operator-excited states for replica index n can be a sign of quantum chaos.
Norihiro Iizuka, Mitsuhiro Nishida
doaj   +1 more source

Lower and upper bounds for entanglement of Rényi-α entropy

open access: yesScientific Reports, 2016
Entanglement Rényi-α entropy is an entanglement measure. It reduces to the standard entanglement of formation when α tends to 1. We derive analytical lower and upper bounds for the entanglement Rényi-α entropy of arbitrary dimensional bipartite quantum ...
Wei Song, Lin Chen, Zhuo-Liang Cao
doaj   +1 more source

On Rényi Permutation Entropy

open access: yesEntropy, 2021
Among various modifications of the permutation entropy defined as the Shannon entropy of the ordinal pattern distribution underlying a system, a variant based on Rényi entropies was considered in a few papers.
Tim Gutjahr, Karsten Keller
doaj   +1 more source

Vascular plant diversity in Swedish road verges of high conservation value is threatened by the invasive alien herb Lupinus polyphyllus Lindley

open access: yesNordic Journal of Botany, EarlyView.
Road verges can be important habitats for vascular plant communities and the organisms that, in turn, depend on them. However, the plant diversity in Swedish road verges is threatened by the invasive perennial plant Lupinus polyphyllus Lindl. Therefore, this study aimed to investigate the effects of L.
Juliana Dániel‐Ferreira   +4 more
wiley   +1 more source

Rényi entropy at large energy density in 2D CFT

open access: yesJournal of High Energy Physics, 2019
We investigate the Rényi entropy and entanglement entropy of an interval with an arbitrary length in the canonical ensemble, microcanonical ensemble and primary excited states at large energy density in the thermodynamic limit of a two-dimensional large ...
Wu-zhong Guo, Feng-Li Lin, Jiaju Zhang
doaj   +1 more source

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