Scoring IBM Data Warehouse and IBM® Netezza® Analytics models

Models are represented on the canvas by a gold model nugget icon. The main purpose of a nugget is for scoring data to generate predictions, or to allow further analysis of the model properties. Scores are added in the form of one or more extra data fields that can be made visible by attaching a Table node to the nugget and running that branch of the stream, as described later in this section. Some nugget dialog boxes, such as those for Decision Tree or Regression Tree, additionally have a Model tab that provides a visual representation of the model.

The extra fields are distinguished by the prefix $<id>- added to the name of the target field, where <id> depends on the model, and identifies the type of information being added. The different identifiers are described in the topics for each model nugget.

To view the scores, complete the following steps:

1. Attach a Table node to the model nugget.
2. Open the Table node.
3. Click Run.
4. Scroll to the right of the table output window to view the extra fields and their scores.