01_​Spark_​MLlib_​Decision_​Tree

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This workflow demonstrates the usage of the Spark MLlib Decision Tree Learner and Spark Predictor. It also demonstrates the conversion of categorical columns into numerical columns which is necessary since the MLlib algorithms only support numerical features and labels.

The workflow makes use of the Create Local Big Data Environment node to create a Spark context. You can swap this node out for a Create Spark Context (Livy) node to connect to a remote cluster.

URL: Spark Decision Tree documentation http://spark.apache.org/docs/latest/mllib-decision-tree.html

Nodes

• File Reader2 ×
• Table to Spark2 ×
• Create Local Big Data Environment1 ×
• Spark Category to Number1 ×
• Spark Decision Tree Learner (MLlib)1 ×
• Show all 8 nodes

Extensions

• FeatureKNIME Base nodes
• FeatureKNIME Extension for Apache Spark
• FeatureKNIME Extension for Apache Spark (legacy)

Links

• No links available