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Chapter 5
Figure 5-1
Completed stream on the stream canvas
This section contains more detailed information on working with nodes to create more complex
data streams. It also discusses opt ions and settings for nodes and streams. For st ep-by-step
examples of stream building using the data shipped with SPSS Modeler (in the Demos folder of
your program installation), see Application Examples on p. 5.
Working with Nodes
Nodes are used in IBM® SPSS® Modeler to help you explore data. Variousnod es in the
workspace represent different objects and actions. The palette at the bo ttom of the SPSS Modeler
window contains all of the possible nodes used in stream building.
There are several types of nodes. Source node s bring data into the stream, and are located on
the Sources tab of the nodes palette. Process nodes perform operation s on individual data records
and fields, and can be found in the Record Ops and Field Ops tabs of the palette. Output nodes
produce a variety of output for data, charts and model results, and are included on the Graphs ,
Output and Export tabs of the nodes palette. Modeling no des use statistical algorithms to create
model nuggets, and are located on the Modeling tab, and (if activated) the Data base Modeling tab,
of the nodes palette. For more information, see the topic Nodes Palett e in Chapter 3 on p. 18.
Youconnect the nodes to form str eams which, when run, let you visualize relationships and
draw conclusions. Streams are like scripts—you can save them a ndre use them with different
data files.