Results 1 to 10 of about 2,870,637 (304)
Mechanisms for log normal concentration distributions in the environment [PDF]
Scientific Reports, 2021 Log normal-like concentration distributions are ubiquitously observed in the environment. However, the mechanistic origins are not well understood. In this paper, we show that first order exponential kinetics onsets log-normal concentration distributions,
August Andersson
doaj +2 more sources
Log-Normal or Over-Dispersed Poisson? [PDF]
Risks, 2018 Although both over-dispersed Poisson and log-normal chain-ladder models are popular in claim reserving, it is not obvious when to choose which model. Yet, the two models are obviously different. While the over-dispersed Poisson model imposes the variance
Jonas Harnau
doaj +3 more sources
On the Shifted Hybrid Log-Normal Distribution
Statistica, 2022 The log-normal distribution is widely used to model positive valued data in many areas of applied research. However, sometimes the log-normal distribution does not completely satisfy the fitting expectations in every real life situations.
Damodaran Santhamani Shibu +2 more
doaj +2 more sources
Volatility Is Log-Normal—But Not for the Reason You Think [PDF]
Risks, 2018 It is impossible to discriminate between the commonly used stochastic volatility models of Heston, log-normal, and 3-over-2 on the basis of exponentially weighted averages of daily returns—even though it appears so at first sight. However, with a 5-
Martin Tegnér, Rolf Poulsen
doaj +5 more sources
Bias Correction Method for Log-Power-Normal Distribution
Mathematics, 2022 The log-power-normal distribution is a generalized version of the log-normal distribution. The maximum likelihood estimation method is the most popular method to obtain the estimates of the log-power-normal distribution parameters.
Tzong-Ru Tsai +3 more
doaj +2 more sources
Generalized log-normal chain-ladder [PDF]
Scandinavian Actuarial Journal, 2019 We propose an asymptotic theory for distribution forecasting from the log-normal chain-ladder model. The theory overcomes the difficulty of convoluting log-normal variables and takes estimation error into account. The results differ from that of the over-
B. Nielsen +3 more
core +3 more sources
Publisher Correction: Mechanisms for log normal concentration distributions in the environment [PDF]
Scientific Reports, 2021 August Andersson
doaj +2 more sources
Log-epsilon-skew normal: A generalization of the log-normal distribution [PDF]
Communications in Statistics - Theory and Methods, 2020 Alan D Hutson +2 more
exaly +2 more sources
, 1975 The purpose of this brief note is to share some very simple observations concerning the log-normal distribution. I have found this distribution useful chiefly for two reasons.
Bigelow, J.H.
core +2 more sources
The accumulative law and its probability model: an extension of the Pareto distribution and the log-normal distribution [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020 Minyu Feng +2 more
exaly +2 more sources