Results 21 to 30 of about 1,623,179 (299)

Global Behavior of a Discrete Survival Model with Several Delays [PDF]

open access: yesJournal of Applied Mathematics, 2013
The difference equationyn+1−yn=−αyn+∑j=1mβje−γjyn−kjis studied and some sufficient conditions which guarantee that all solutions of the equation are oscillatory, or that the positive equilibrium of the equation is globally asymptotically stable, are obtained.
Xu, Meirong, Wang, Yuzhen
openaire   +3 more sources

Variable selection in discrete survival models including heterogeneity [PDF]

open access: yesLifetime Data Analysis, 2016
Several variable selection procedures are available for continuous time-to-event data. However, if time is measured in a discrete way and therefore many ties occur models for continuous time are inadequate. We propose penalized likelihood methods that perform efficient variable selection in discrete survival modeling with explicit modeling of the ...
Groll, Andreas, Tutz, Gerhard
openaire   +3 more sources

Deep Learning-Based Discrete Calibrated Survival Prediction

open access: yes2022 IEEE International Conference on Digital Health (ICDH), 2022
Accepted as a short conference paper at ICDH ...
Patrick Fuhlert   +5 more
openaire   +2 more sources

Discrete-Time Survival Mixture Analysis [PDF]

open access: yesJournal of Educational and Behavioral Statistics, 2005
This article proposes a general latent variable approach to discrete-time survival analysis of nonrepeatable events such as onset of drug use. It is shown how the survival analysis can be formulated as a generalized latent class analysis of event history indicators.
Bengt Muthén, Katherine Masyn
openaire   +1 more source

Survival prediction models: an introduction to discrete-time modeling

open access: yesBMC Medical Research Methodology, 2022
AbstractBackgroundPrediction models for time-to-event outcomes are commonly used in biomedical research to obtain subject-specific probabilities that aid in making important clinical care decisions. There are several regression and machine learning methods for building these models that have been designed or modified to account for the censoring that ...
Krithika Suresh   +2 more
openaire   +3 more sources

Spectro-consistent discretization of Navier-Stokes: a challenge to RANS and LES [PDF]

open access: yes, 1998
In this paper, we discuss the results of a fourth-order, spectro-consistent discretization of the incompressible Navier-Stokes equations. In such an approach the discretization of a (skew-)symmetric operator is given by a (skew-)symmetric matrix ...
Veldman, A.E.P.   +5 more
core   +1 more source

Statistical Properties and Applications of the Discrete Exponentiated Modified Topp-Leone Chen Distribution [PDF]

open access: yesمجلة العلوم التجارية والبيئية
In this paper, a new distribution with four parameters named discrete exponentiated modified Topp-Leone Chen distribution is introduced, using the general approach of discretization. The discrete exponentiated modified Topp-Leone Chen distribution can be
Abeer Abd EL-Hady   +2 more
doaj   +1 more source

Pathway Implications of Aberrant Global Methylation in Adrenocortical Cancer. [PDF]

open access: yesPLoS ONE, 2016
Adrenocortical carcinomas (ACC) are a rare tumor type with a poor five-year survival rate and limited treatment options.Understanding of the molecular pathogenesis of this disease has been aided by genomic analyses highlighting alterations in TP53, WNT ...
Christophe R Legendre   +8 more
doaj   +1 more source

Regularizing the Deepsurv Network Using Projection Loss for Medical Risk Assessment

open access: yesIEEE Access, 2022
State-of-the-art deep survival prediction approaches expand network parameters to accommodate performance over a fine discretization of output time.
Phawis Thammasorn   +9 more
doaj   +1 more source

Discrete exterior geometry approach to structure-preserving discretization of distributed-parameter port-Hamiltonian systems [PDF]

open access: yes, 2011
This paper addresses the issue of structure-preserving discretization of open distributed-parameter systems with Hamiltonian dynamics. Employing the formalism of discrete exterior calculus, we introduce a simplicial Dirac structure as a discrete analogue
Seslija, Marko,   +11 more
core   +3 more sources

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