Github user mengxr commented on a diff in the pull request: https://github.com/apache/spark/pull/8926#discussion_r40636024 --- Diff: python/pyspark/ml/regression.py --- @@ -608,6 +609,141 @@ class GBTRegressionModel(TreeEnsembleModels): .. versionadded:: 1.4.0 """ +@inherit_doc +class AFTSurvivalRegression(JavaEstimator, HasFeaturesCol, HasLabelCol, HasPredictionCol, + HasFitIntercept, HasMaxIter, HasTol): + """ + `https://en.wikipedia.org/wiki/Accelerated_failure_time_model` + Fit a parametric survival regression model named accelerated failure time (AFT) model + based on the Weibull distribution of the survival time. + + >>> from pyspark.mllib.linalg import Vectors + >>> df = sqlContext.createDataFrame([ + ... (1.0, Vectors.dense(1.0), 1.0), + ... (0.0, Vectors.sparse(1, [], []), 0.0)], ["label", "features", "censor"]) + >>> aftsr = AFTSurvivalRegression() + >>> model = aftsr.fit(df) + >>> model.transform(df).show() + +-----+---------+------+----------+ + |label| features|censor|prediction| + +-----+---------+------+----------+ + | 1.0| [1.0]| 1.0| 1.0| + | 0.0|(1,[],[])| 0.0| 1.0| + +-----+---------+------+----------+ + ... + + .. versionadded:: 1.6.0 + """ + + # a placeholder to make it appear in the generated doc + censorCol = Param(Params._dummy(), "censorCol", + "censor column name") + quantileProbabilities = \ + Param(Params._dummy(), "quantileProbabilities", + "quantile probabilities array" + + ", array is not empty and every probability is in range [0,1]") + quantilesCol = Param(Params._dummy(), "quantilesCol", + "quantiles column name") + + @keyword_only + def __init__(self, featuresCol="features", labelCol="label", predictionCol="prediction", + fitIntercept=True, maxIter=100, tol=1E-6, censorCol="censor", + quantileProbabilities=[0.01, 0.05, 0.1, 0.25, 0.5, 0.75, 0.9, 0.95, 0.99], + quantilesCol=None): + """ + __init__(self, featuresCol="features", labelCol="label", predictionCol="prediction", + fitIntercept=True, maxIter=100, tol=1E-6, censorCol="censor", + quantileProbabilities=[0.01, 0.05, 0.1, 0.25, 0.5, 0.75, 0.9, 0.95, 0.99], + quantilesCol=None): + """ + super(AFTSurvivalRegression, self).__init__() + self._java_obj = self._new_java_obj( + "org.apache.spark.ml.regression.AFTSurvivalRegression", self.uid) + self.censorCol = \ + Param(self, "censorCol", + "censor column name") --- End diff -- 662-664 should fit into a single line
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org