Yanbo Liang created SPARK-11259:
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Summary: Params.validateParams() should be called automatically
Key: SPARK-11259
URL: https://issues.apache.org/jira/browse/SPARK-11259
Project: Spark
Issue Type: Bug
Components: ML
Reporter: Yanbo Liang
Params.validateParams() not be called automatically currently. Such as the
following code snippet will not throw exception which is not as expected.
{code:scala}
val df = sqlContext.createDataFrame(
Seq(
(1, Vectors.dense(0.0, 1.0, 4.0), 1.0),
(2, Vectors.dense(1.0, 0.0, 4.0), 2.0),
(3, Vectors.dense(1.0, 0.0, 5.0), 3.0),
(4, Vectors.dense(0.0, 0.0, 5.0), 4.0))
).toDF("id", "features", "label")
val scaler = new MinMaxScaler()
.setInputCol("features")
.setOutputCol("features_scaled")
.setMin(10)
.setMax(0)
val pipeline = new Pipeline().setStages(Array(scaler))
pipeline.fit(df)
{code}
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