tires represent a critical spare part in mines. there is a shortage of medium and large tires. in addition, with increased mining activities and the creation of new mines, the demand for tires has increased significantly. thus, it is particularly important for mining engineers to identify tire characteristics and correctly manage the spare part inventory. spare parts management is critical from...

objective: the main objective of this research was estimation of genetic parameters for five consecutive measurements of egg weights in isfahan fowl using multi trait model and random regression models. methods: the statistical models included generation-hatch as a fixed effect, weeks of age as a covariate and additive genetic and individual permanent environmental effects as random effects. th...

Beta regression models are widely used for modeling continuous data limited to the unit interval, such as proportions, fractions, and rates. The inference parameters of beta is commonly based on maximum likelihood estimation. However, it known be sensitive discrepant observations. In some cases, one atypical point can lead severe bias erroneous conclusions about features interest. this work, we...

studies pertaining convergence and its benefits for developing and underdeveloped countries, specifically latin american countries and the caribbean islands are essential because they can create the necessary grounds for further growth and development. the aim of this study is to analyze the economic growth of latin american countries and the caribbeans after their beta and sigma convergences d...

Currently, the use of deep learning for solving ordinal classification problems, where categories follow a natural order, has not received much attention. In this paper, we propose an unimodal regularisation based on beta distribution applied to cross-entropy loss. This encourages labels be soft distribution, more appropriate problems. Given that two parameters must adjusted, method automatical...

The classic statistical method for modelling the rates and proportions is beta regression model (BRM). standard maximum likelihood estimator (MLE) used to estimate coefficients of BRM. However, this MLE very sensitive when regressors are linearly correlated. Therefore, study introduces a new ridge (BRR) as remedy problem instability MLE. We mean squared error properties BRR analytically then ba...

Sleep duration has been inversely associated with body mass index (BMI). We examined the relationship between self-reported sleep duration and BMI, waist circumference, and percent body fat in Black and White individuals from the CARDIA study. Box-Tidwell regression models were adjusted for age and race (Model 1), additional lifestyle and demographic variables (Model 2), and physical activity (...

This paper proposes a general class of regression models for continuous proportions when the data contain zeros or ones. The proposed class of models assumes that the response variable has a mixed continuous-discrete distribution with probability mass at zero or one. The beta distribution is used to describe the continuous component of the model, since its density has a wide range of different ...