28a98464ea
Previously, users of evaluator (`CrossValidator` and `TrainValidationSplit`) would only maximize the metric in evaluator, leading to a hacky solution which negated metrics to be minimized and caused erroneous negative values to be reported to the user. This PR adds a `isLargerBetter` attribute to the `Evaluator` base class, instructing users of `Evaluator` on whether the chosen metric should be maximized or minimized. CC jkbradley Author: Feynman Liang <fliang@databricks.com> Author: Joseph K. Bradley <joseph@databricks.com> Closes #8290 from feynmanliang/SPARK-10097. |
||
|---|---|---|
| .. | ||
| docs | ||
| lib | ||
| pyspark | ||
| test_support | ||
| .gitignore | ||
| run-tests | ||
| run-tests.py | ||