Results 71 to 80 of about 44,938 (219)

An objective Bayesian method for including parameter uncertainty in ensemble model output statistics

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Conventional model output statistics and ensemble model output statistics methods for calibrating ensemble forecasts lead to severe underestimation of the probabilities of ensemble extremes (in blue). This is because they ignore statistical parameter uncertainty.
Stephen Jewson, Leonardo Olivetti, Gabriele Messori, Paul J. Northrop, Trevor Sweeting   +4 more
wiley   +1 more source

Bayesian Fractional Weibull Regression for Reliability Prognostics and Predictive Maintenance

Mathematics
This paper introduces a novel Bayesian Fractional Weibull (BFW) regression framework, which generalizes the classical Weibull accelerated failure time model using fractional calculus.
Muath Awadalla, Manigandan Murugesan
doaj   +1 more source

Moving Beyond Sub-Gaussianity in High-Dimensional Statistics: Applications in Covariance Estimation and Linear Regression

, 2020
Concentration inequalities form an essential toolkit in the study of high dimensional (HD) statistical methods. Most of the relevant statistics literature in this regard is based on sub-Gaussian or sub-exponential tail assumptions.
Chakrabortty, Abhishek, Kuchibhotla, Arun Kumar   +1 more
core  

Optimal Accelerated Life Testing Design Under Constrained Resources Using Double Deep Q‐Learning

Quality and Reliability Engineering International, EarlyView.
ABSTRACT Accelerated life tests (ALTs) are essential tools for estimating product reliability under high‐stress conditions, allowing failure data to be collected in reduced timeframes. However, planning effective ALT configurations is a complex task that requires selecting stress levels, test durations, and unit allocations while accounting for limited
Allan Jonathan da Silva, Carlos A. A. Gomes, Lucas R. de Souza, Rhenan S. dos Santos   +3 more
wiley   +1 more source

Residual Analysis for Poisson-Exponentiated Weibull Regression Models with Cure Fraction

Stats
The use of cure-rate survival models has grown in recent years. Even so, proposals to perform the goodness of fit of these models have not been so frequent. However, residual analysis can be used to check the adequacy of a fitted regression model.
Cleanderson R. Fidelis, Edwin M. M. Ortega, Gauss M. Cordeiro   +2 more
doaj   +1 more source

Platform competition and strategic trade‐offs for complementors: Heterogeneous reactions to the entry of a new platform

Strategic Management Journal, EarlyView.
Abstract Research Summary We study how the entry of a rival platform affects the strategies of the incumbent's complementors. The latter face a trade‐off: While the entry threatens their benefits from indirect network effects, it also allows them to escape intense within‐platform competition.
Johannes Loh, Ambre Elsas‐Nicolle
wiley   +1 more source

Dynamic Bayesian Network for Continuous Health Index Estimation and Condition Assessment of Power Transformers

High Voltage, EarlyView.
ABSTRACT To address the limitations of traditional transformer health index (HI), such as high dependence on data integrity and inability to assist in diagnosing latent faults, this study proposes an HI prediction method based on dynamic Bayesian network (DBN).
Shuaibing Li, Hongyu Li, Yi Cui, Yongqiang Kang   +3 more
wiley   +1 more source

Efficient experimental designs for sigmoidal growth models [PDF]

For the Weibull- and Richards-regression model robust designs are determined by maximizing a minimum of D- or D1-efficiencies, taken over a certain range of the non-linear parameters.
Dette, Holger, Pepelyshev, Andrey
core  

The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests worldwide are increasingly impacted by drought due to climate change, prompting plants to adapt through dehydration tolerance (DT) and avoidance (DA), two distinct physiological strategies.
Xingyun Liang, Bo Cui, Xiaoyi Wang, Hui Liu, Pengcheng He, Deyi Yin, Weize Tang, Yangsiding Wang, Liangning Liao, Qiang Xia, Guilin Wu, Qing Ye   +11 more
wiley   +1 more source

Discrimination between the lognormal and Weibull Distributions by using multiple linear regression

Dyna, 2018
In reliability analysis, both the Weibull and the lognormal distributions are analyzed by using the observed data logarithms. While the Weibull data logarithm presents skewness, the lognormal data logarithm is symmetrical. This paper presents a method to
Jesus Francisco Ortiz-Yañez, Manuel Román Piña Monarrez   +1 more
doaj   +1 more source