Note: GBTs do not yet support multiclass classification. The class column needs to contain 0 and 1 as class labels. For multiclass problems, please use decision trees or Random Forests.
Please note that all data must be numeric, including the label column which needs to contain 0 and 1. Use the Spark Category To Number nodes to convert nominal values to numeric columns. The mapping dictionary of the converter node is the input of the second in port of this node.
Use the Spark Predictor node to apply the learned model to unseen data.
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To use this node in KNIME, install the extension KNIME Extension for Apache Spark (legacy) from the below update site following our NodePit Product and Node Installation Guide:
A zipped version of the software site can be downloaded here.
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