UpdateGamma

This contains subfunctions to update parameters gammas, betas, baseline
hazard and graph learning parameters

An implementation of Bayesian survival models with graph-structured selection priors for sparse identification of omics features predictive of survival (Madjar et al., 2021 <doi:10.1186/s12859-021-04483-z>) and its extension to use a fixed graph via a Markov Random Field (MRF) prior for capturing known structure of omics features, e.g. disease-specific pathways from the Kyoto Encyclopedia of Genes and Genomes database.

Zhi Zhao

BayesSurvive

Bayesian Survival Models for High-Dimensional Data

Katrin Madjar

Tobias Østmo Hermansen

Manuela Zucknick

Jörg Rahnenführer

UpdateGamma function

<dl><dt>sobj</dt>
<dd>a list containing observed data</dd>
<dt>hyperpar</dt>
<dd>a list containing prior parameter values</dd>
<dt>ini</dt>
<dd>a list containing prior parameters' initial values</dd>
<dt>S</dt>
<dd>the number of subgroups</dd>
<dt>method</dt>
<dd>a method option from
<code>c("Pooled", "CoxBVSSL", "Sub-struct", "Subgroup")</code></dd>
<dt>MRF_G</dt>
<dd>logical value. <code>MRF_G = TRUE</code> is to fix the MRF graph which
is provided in the argument <code>hyperpar</code>, and <code>MRF_G = FALSE</code> is to
use graphical model for leanring the MRF graph</dd>
<dt>MRF_2b</dt>
<dd>two different b in MRF prior for subgraphs G_ss and G_rs</dd></dl>

Arguments

Subfunctions to update parameters — UpdateGamma

<dl>

<dt>sobj</dt>
<dd>a list containing observed data</dd>


<dt>hyperpar</dt>
<dd>a list containing prior parameter values</dd>


<dt>ini</dt>
<dd>a list containing prior parameters' initial values</dd>


<dt>S</dt>
<dd>the number of subgroups</dd>


<dt>method</dt>
<dd>a method option from
<code>c("Pooled", "CoxBVSSL", "Sub-struct", "Subgroup")</code></dd>


<dt>MRF_G</dt>
<dd>logical value. <code>MRF_G = TRUE</code> is to fix the MRF graph which
is provided in the argument <code>hyperpar</code>, and <code>MRF_G = FALSE</code> is to
use graphical model for leanring the MRF graph</dd>


<dt>MRF_2b</dt>
<dd>two different b in MRF prior for subgraphs G_ss and G_rs</dd>

</dl>

UpdateGamma: Subfunctions to update parameters

Description

Usage

Value

Arguments