Repository: spark Updated Branches: refs/heads/branch-2.1 8e097890a -> 69786ea3a
[SPARK-20631][PYTHON][ML] LogisticRegression._checkThresholdConsistency should use values not Params ## What changes were proposed in this pull request? - Replace `getParam` calls with `getOrDefault` calls. - Fix exception message to avoid unintended `TypeError`. - Add unit tests ## How was this patch tested? New unit tests. Author: zero323 <zero...@users.noreply.github.com> Closes #17891 from zero323/SPARK-20631. (cherry picked from commit 804949c6bf00b8e26c39d48bbcc4d0470ee84e47) Signed-off-by: Yanbo Liang <yblia...@gmail.com> Project: http://git-wip-us.apache.org/repos/asf/spark/repo Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/69786ea3 Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/69786ea3 Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/69786ea3 Branch: refs/heads/branch-2.1 Commit: 69786ea3a972af1b29a332dc11ac507ed4368cc6 Parents: 8e09789 Author: zero323 <zero...@users.noreply.github.com> Authored: Wed May 10 16:57:52 2017 +0800 Committer: Yanbo Liang <yblia...@gmail.com> Committed: Wed May 10 16:58:34 2017 +0800 ---------------------------------------------------------------------- python/pyspark/ml/classification.py | 6 +++--- python/pyspark/ml/tests.py | 12 ++++++++++++ 2 files changed, 15 insertions(+), 3 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/spark/blob/69786ea3/python/pyspark/ml/classification.py ---------------------------------------------------------------------- diff --git a/python/pyspark/ml/classification.py b/python/pyspark/ml/classification.py index 570a414..2b47c40 100644 --- a/python/pyspark/ml/classification.py +++ b/python/pyspark/ml/classification.py @@ -238,13 +238,13 @@ class LogisticRegression(JavaEstimator, HasFeaturesCol, HasLabelCol, HasPredicti def _checkThresholdConsistency(self): if self.isSet(self.threshold) and self.isSet(self.thresholds): - ts = self.getParam(self.thresholds) + ts = self.getOrDefault(self.thresholds) if len(ts) != 2: raise ValueError("Logistic Regression getThreshold only applies to" + " binary classification, but thresholds has length != 2." + - " thresholds: " + ",".join(ts)) + " thresholds: {0}".format(str(ts))) t = 1.0/(1.0 + ts[0]/ts[1]) - t2 = self.getParam(self.threshold) + t2 = self.getOrDefault(self.threshold) if abs(t2 - t) >= 1E-5: raise ValueError("Logistic Regression getThreshold found inconsistent values for" + " threshold (%g) and thresholds (equivalent to %g)" % (t2, t)) http://git-wip-us.apache.org/repos/asf/spark/blob/69786ea3/python/pyspark/ml/tests.py ---------------------------------------------------------------------- diff --git a/python/pyspark/ml/tests.py b/python/pyspark/ml/tests.py index 70e0c6d..7152036 100755 --- a/python/pyspark/ml/tests.py +++ b/python/pyspark/ml/tests.py @@ -808,6 +808,18 @@ class PersistenceTest(SparkSessionTestCase): except OSError: pass + def logistic_regression_check_thresholds(self): + self.assertIsInstance( + LogisticRegression(threshold=0.5, thresholds=[0.5, 0.5]), + LogisticRegressionModel + ) + + self.assertRaisesRegexp( + ValueError, + "Logistic Regression getThreshold found inconsistent.*$", + LogisticRegression, threshold=0.42, thresholds=[0.5, 0.5] + ) + def _compare_params(self, m1, m2, param): """ Compare 2 ML Params instances for the given param, and assert both have the same param value --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@spark.apache.org For additional commands, e-mail: commits-h...@spark.apache.org
