From c020f7d9d43548d27ae4a9564ba38981fd530cb1 Mon Sep 17 00:00:00 2001
From: vectorijk <jiangkai@gmail.com>
Date: Mon, 2 Nov 2015 16:12:04 -0800
Subject: [SPARK-10592] [ML] [PySpark] Deprecate weights and use coefficients
 instead in ML models

Deprecated in `LogisticRegression` and `LinearRegression`

Author: vectorijk <jiangkai@gmail.com>

Closes #9311 from vectorijk/spark-10592.
---
 python/pyspark/ml/classification.py | 13 +++++++++++++
 python/pyspark/ml/regression.py     | 12 ++++++++++++
 2 files changed, 25 insertions(+)

(limited to 'python/pyspark')

diff --git a/python/pyspark/ml/classification.py b/python/pyspark/ml/classification.py
index 4cbe7fbd48..2e468f67b8 100644
--- a/python/pyspark/ml/classification.py
+++ b/python/pyspark/ml/classification.py
@@ -15,6 +15,9 @@
 # limitations under the License.
 #
 
+import warnings
+
+from pyspark import since
 from pyspark.ml.util import keyword_only
 from pyspark.ml.wrapper import JavaEstimator, JavaModel
 from pyspark.ml.param.shared import *
@@ -189,8 +192,18 @@ class LogisticRegressionModel(JavaModel):
         """
         Model weights.
         """
+
+        warnings.warn("weights is deprecated. Use coefficients instead.")
         return self._call_java("weights")
 
+    @property
+    @since("1.6.0")
+    def coefficients(self):
+        """
+        Model coefficients.
+        """
+        return self._call_java("coefficients")
+
     @property
     def intercept(self):
         """
diff --git a/python/pyspark/ml/regression.py b/python/pyspark/ml/regression.py
index dc68815556..ab26616f4a 100644
--- a/python/pyspark/ml/regression.py
+++ b/python/pyspark/ml/regression.py
@@ -15,6 +15,8 @@
 # limitations under the License.
 #
 
+import warnings
+
 from pyspark import since
 from pyspark.ml.util import keyword_only
 from pyspark.ml.wrapper import JavaEstimator, JavaModel
@@ -117,8 +119,18 @@ class LinearRegressionModel(JavaModel):
         """
         Model weights.
         """
+
+        warnings.warn("weights is deprecated. Use coefficients instead.")
         return self._call_java("weights")
 
+    @property
+    @since("1.6.0")
+    def coefficients(self):
+        """
+        Model coefficients.
+        """
+        return self._call_java("coefficients")
+
     @property
     @since("1.4.0")
     def intercept(self):
-- 
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