Results 11 to 20 of about 825 (114)

A generalized Gompertz promotion time cure model and its fitness to cancer data [PDF]

open access: yesHeliyon
The cure models based on standard distributions like exponential, Weibull, lognormal, Gompertz, gamma, are often used to analyze survival data from cancer clinical trials with long-term survivors.
Ayesha Tahira, Muhammad Yameen Danish
doaj   +2 more sources

M-estimation in high-dimensional linear model [PDF]

open access: yesJ Inequal Appl, 2018
We mainly study the M-estimation method for the high-dimensional linear regression model, and discuss the properties of M-estimator when the penalty term is the local linear approximation.
Wang, Kai, Zhu, Yanling
core   +2 more sources

2000 Mathematics Subject Classification: Primary 62C99, sec-ondary 62C10, 62C20, 62J05

open access: green, 2016
The paper deals with recovering an unknown vector β ∈ R^p based on the observations Y = Xβ + ∈ξ and Z = X + σζ, where X is an unknown n×p-matrix with n ≥ p, ξ ∈ R^p is a standard white Gaussian noise, ζ is a n × p-matrix with i.i.d. standard Gaussian entries, and ∈, σ ∈ R^+ are known noise levels. It is assumed that X has a large condition number and p
Golubev, Yu., Zimolo, Th.
openaire   +3 more sources

Zero-inflated Bell regression models for count data [PDF]

open access: yesJournal of Applied Statistics, 2020
Artur J Lemonte
exaly   +2 more sources

Robust estimation for partial functional linear regression models based on FPCA and weighted composite quantile regression

open access: yesOpen Mathematics, 2021
In this paper, we consider a novel estimation for partial functional linear regression models. The functional principal component analysis method is employed to estimate the slope function and the functional predictive variable, respectively.
Cao Peng, Sun Jun
doaj   +1 more source

Detections and SIR simulations of the COVID-19 pandemic waves in Ukraine

open access: yesComputational and Mathematical Biophysics, 2021
Background. Unfortunately, the COVID-19 pandemic is still far from stabilizing. Of particular concern is the sharp increase in the number of diseases in June-July, September-October 2020 and February-March 2021.
Nesteruk Igor
doaj   +1 more source

Penerapan model regresi multilevel untuk data ketepatan waktu lulus mahasiswa

open access: yesMajalah Ilmiah Matematika dan Statistika, 2023
Multilevel logistic regression is one of the alternatives to solving a problem that has a nested data structure like the student data in Alauddin in 2016. The data indicates that students are nested in each different study program.
Rahmatul Ula   +4 more
doaj   +1 more source

A Mathematical Model for Blood Flow Accounting for the Hematological Disorders

open access: yesComputational and Mathematical Biophysics, 2022
This paper considers a mathematical model that accounts for the hematological disorders of blood in its flow in human arteries. Blood is described as a Newtonian fluid but with its viscosity as a function of the hematocrit, plasma viscosity, and shape ...
Karthik A.   +2 more
doaj   +1 more source

Influence diagnostics for the Poisson regression model using two-parameter estimator

open access: yesAlexandria Engineering Journal, 2021
The identification of influential observations is an essential element in regression analysis as they posed a threat to the model building process.
Aamna Khan   +3 more
doaj   +1 more source

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