title: survivalsvm feature extraction in R
body: <p>Is there a way to extract feature variables according from its importance in survivalsvm in R?</p>
  <p>Here's a sample code:</p>
  <pre><code>library(survival)
  library(survivalsvm)
  
  data(veteran)
  
  survivalsvm(Surv(time, status) ~ ., veteran, gamma.mu = 0.1)
  
  survsvm.reg &lt;- survivalsvm(formula = Surv(diagtime, status) ~ ., data = veteran,
                             type = &quot;regression&quot;, gamma.mu = 0.1,
                             opt.meth = &quot;ipop&quot;, kernel = &quot;add_kernel&quot;)
  </code></pre>
  <p>I want to extract the feature variables in the survsvm.reg. Is that possible? Thanks</p>