diff options
Diffstat (limited to 'python')
| -rw-r--r-- | python/pyspark/ml/regression.py | 46 |
1 files changed, 35 insertions, 11 deletions
diff --git a/python/pyspark/ml/regression.py b/python/pyspark/ml/regression.py index cfcbbfc98e..25640b1f85 100644 --- a/python/pyspark/ml/regression.py +++ b/python/pyspark/ml/regression.py @@ -1245,10 +1245,14 @@ class GeneralizedLinearRegression(JavaEstimator, HasLabelCol, HasFeaturesCol, Ha predictor (link function) and a description of the error distribution (family). It supports "gaussian", "binomial", "poisson" and "gamma" as family. Valid link functions for each family is listed below. The first link function of each family is the default one. - - "gaussian" -> "identity", "log", "inverse" - - "binomial" -> "logit", "probit", "cloglog" - - "poisson" -> "log", "identity", "sqrt" - - "gamma" -> "inverse", "identity", "log" + + * "gaussian" -> "identity", "log", "inverse" + + * "binomial" -> "logit", "probit", "cloglog" + + * "poisson" -> "log", "identity", "sqrt" + + * "gamma" -> "inverse", "identity", "log" .. seealso:: `GLM <https://en.wikipedia.org/wiki/Generalized_linear_model>`_ @@ -1258,9 +1262,12 @@ class GeneralizedLinearRegression(JavaEstimator, HasLabelCol, HasFeaturesCol, Ha ... (1.0, Vectors.dense(1.0, 2.0)), ... (2.0, Vectors.dense(0.0, 0.0)), ... (2.0, Vectors.dense(1.0, 1.0)),], ["label", "features"]) - >>> glr = GeneralizedLinearRegression(family="gaussian", link="identity") + >>> glr = GeneralizedLinearRegression(family="gaussian", link="identity", linkPredictionCol="p") >>> model = glr.fit(df) - >>> abs(model.transform(df).head().prediction - 1.5) < 0.001 + >>> transformed = model.transform(df) + >>> abs(transformed.head().prediction - 1.5) < 0.001 + True + >>> abs(transformed.head().p - 1.5) < 0.001 True >>> model.coefficients DenseVector([1.5..., -1.0...]) @@ -1290,20 +1297,23 @@ class GeneralizedLinearRegression(JavaEstimator, HasLabelCol, HasFeaturesCol, Ha "relationship between the linear predictor and the mean of the distribution " + "function. Supported options: identity, log, inverse, logit, probit, cloglog " + "and sqrt.", typeConverter=TypeConverters.toString) + linkPredictionCol = Param(Params._dummy(), "linkPredictionCol", "link prediction (linear " + + "predictor) column name", typeConverter=TypeConverters.toString) @keyword_only def __init__(self, labelCol="label", featuresCol="features", predictionCol="prediction", family="gaussian", link=None, fitIntercept=True, maxIter=25, tol=1e-6, - regParam=0.0, weightCol=None, solver="irls"): + regParam=0.0, weightCol=None, solver="irls", linkPredictionCol=""): """ __init__(self, labelCol="label", featuresCol="features", predictionCol="prediction", \ family="gaussian", link=None, fitIntercept=True, maxIter=25, tol=1e-6, \ - regParam=0.0, weightCol=None, solver="irls") + regParam=0.0, weightCol=None, solver="irls", linkPredictionCol="") """ super(GeneralizedLinearRegression, self).__init__() self._java_obj = self._new_java_obj( "org.apache.spark.ml.regression.GeneralizedLinearRegression", self.uid) - self._setDefault(family="gaussian", maxIter=25, tol=1e-6, regParam=0.0, solver="irls") + self._setDefault(family="gaussian", maxIter=25, tol=1e-6, regParam=0.0, solver="irls", + linkPredictionCol="") kwargs = self.__init__._input_kwargs self.setParams(**kwargs) @@ -1311,11 +1321,11 @@ class GeneralizedLinearRegression(JavaEstimator, HasLabelCol, HasFeaturesCol, Ha @since("2.0.0") def setParams(self, labelCol="label", featuresCol="features", predictionCol="prediction", family="gaussian", link=None, fitIntercept=True, maxIter=25, tol=1e-6, - regParam=0.0, weightCol=None, solver="irls"): + regParam=0.0, weightCol=None, solver="irls", linkPredictionCol=""): """ setParams(self, labelCol="label", featuresCol="features", predictionCol="prediction", \ family="gaussian", link=None, fitIntercept=True, maxIter=25, tol=1e-6, \ - regParam=0.0, weightCol=None, solver="irls") + regParam=0.0, weightCol=None, solver="irls", linkPredictionCol="") Sets params for generalized linear regression. """ kwargs = self.setParams._input_kwargs @@ -1339,6 +1349,20 @@ class GeneralizedLinearRegression(JavaEstimator, HasLabelCol, HasFeaturesCol, Ha return self.getOrDefault(self.family) @since("2.0.0") + def setLinkPredictionCol(self, value): + """ + Sets the value of :py:attr:`linkPredictionCol`. + """ + return self._set(linkPredictionCol=value) + + @since("2.0.0") + def getLinkPredictionCol(self): + """ + Gets the value of linkPredictionCol or its default value. + """ + return self.getOrDefault(self.linkPredictionCol) + + @since("2.0.0") def setLink(self, value): """ Sets the value of :py:attr:`link`. |