Results 71 to 80 of about 6,495 (249)
On Log-Definite Tempered Combinatorial Sequences
MathematicsThis article is concerned with qualitative and quantitative refinements of the concepts of the log-convexity and log-concavity of positive sequences.
Tomislav Došlić, Biserka Kolarec
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Stochastic Newton Sampler: The R Package sns
Journal of Statistical Software, 2016 The R package sns implements the stochastic Newton sampler (SNS), a MetropolisHastings Markov chain Monte Carlo (MCMC) algorithm where the proposal density function is a multivariate Gaussian based on a local, second-order Taylor-series expansion of log ...
Alireza S. Mahani +3 more
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Intrinsic Entropies of Log-Concave Distributions
IEEE Transactions on Information Theory, 2018 The entropy of a random variable is well-known to equal the exponential growth rate of the volumes of its typical sets. In this paper, we show that for any log-concave random variable $X$, the sequence of the $\lfloor n \rfloor^{\text{th}}$ intrinsic volumes of the typical sets of $X$ in dimensions $n \geq 1$ grows exponentially with a well-defined ...
Varun Jog, Venkat Anantharam
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Zhang’s Inequality for Log-Concave Functions [PDF]
, 2020 15
Alonso-Gutiérrez, David +2 more
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How Competitive Is Myanmar's Rice Sector? A Comparison of Production Costs and Efficiency
Agribusiness, EarlyView.ABSTRACT This paper analyzes the cost competitiveness of rice production in Myanmar by examining production costs, cost efficiency, and the potential effect of improving cost efficiency on the country's global competitiveness. To achieve this, we conduct a comparative analysis of production costs among major rice‐producing countries and estimate the ...
Nandar Aye Chan +3 more
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Log-concavity and relative log-concave ordering of compound distributions
Probability in the Engineering and Informational SciencesAbstractIn this paper, we compare the entropy of the original distribution and its corresponding compound distribution. Several results are established based on convex order and relative log-concave order. The necessary and sufficient condition for a compound distribution to be log-concave is also discussed, including compound geometric distribution ...
Wanwan Xia, Wenhua Lv
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Trust‐region filter algorithms utilizing Hessian information for gray‐box optimization
AIChE Journal, EarlyView.Abstract Optimizing industrial processes often involves gray‐box models that couple algebraic glass‐box equations with black‐box components lacking analytic derivatives. Such systems challenge derivative‐based solvers. The classical trust‐region filter (TRF) algorithm provides a robust framework but requires extensive parameter tuning and numerous ...
Gul Hameed +4 more
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BMC Musculoskeletal Disorders, 2012 Background VDR may be considered as a candidate gene potentially related to Idiopathic Scoliosis susceptibility and natural history. Transcriptional profile of VDR mRNA isoforms might be changed in the structural tissues of the scoliotic spine and ...
Nowak Roman +2 more
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, 2017 We attempt to provide a description of the geometric theory of log-concave functions. We present the main aspects of this theory: operations between log-concave functions; duality; inequalities including the Prekopa-Leindler inequality and the functional form of Blaschke-Santalo inequality and its converse; functional versions of area measure and mixed
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Food inflation pass‐through from agricultural imports in a small open economy
American Journal of Agricultural Economics, EarlyView.Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
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