title: Reptree (WEKA), Only sorts values for numeric attributes once
body: <p>I am using Reptree algorithm from weka. There is no detail docs for this algorithm, only:</p>
  
  <p>Fast decision tree learner. Builds a decision/regression tree using information gain/variance reduction and prunes it using reduced-error pruning (with backfitting). Only sorts values for numeric attributes once. Missing values are dealt with by splitting the corresponding instances into pieces (i.e. as in C4.5).</p>
  
  <p>Can anyone please explain me, what is meant by: "Only sorts values for numeric attributes once."</p>
  
  <p>I am trying re-implement this algorithm, but still getting not even close results.</p>
  
  <p>Thank you</p>
  
  <p>Lubomir</p>