Changeset 13803

#2457:

• changed expected runtime calculation
  • now outputs positive infinity instead of nan when no run was successful
  • now filters outliers in successful and unsuccessful runs by using two standard deviations of the mean of successful runs as lower bound
    • this change allows having unsuccessful runs in the database with low evaluations / runtime (e.g. due to being aborted early or from an experiment where the max budget was lower)
• worked on recommendation algorithms
  • implemented several performance measures (absolute error, absolute log error, ndcp, kendall's tau) to evaluate the ranking