Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Zhu Wang <zwang145@uthsc.edu>’
  
  New maintainer:
    Zhu Wang <zwang145@uthsc.edu>
  Old maintainer(s):
    Zhu Wang <zhuwang@gmail.com>

Check: examples, Result: NOTE
  Examples with CPU time > 2.5 times elapsed time
                  user system elapsed  ratio
  irb.train_aft 13.614  0.017   0.439 31.050
  irboost       30.720  0.155   1.360 22.702
  irb.train     10.917  0.084   0.590 18.646