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Building Streams
Maximum number of rows to show in Data Preview.
Specif y the number of rows to be shown when
a preview of th
e data is requested for a node. For more information, see the topic Previewing
Data in Nodes on p. 52.
Maximum members for nominal fields.
Select to specify a maximum number of members for
nominal (set) fields after which the data type of the field become s Typeless. This option is useful
when working with large nominal fields. Note: When the measurement level of a field is set to
Typeless, its role is automatically set to None. This means that the fields are not available for
modeling.
Limit set size for Kohonen, and K-Means modeling.
Select to specify a maximum number of members
for nomina l fields used in Kohonen nets and K-Means modeling. The default set size is 20, after
which the field is ignored and a warning is raised, providing information on the field in question.
Note that, for compatibility, this option also applies to the old Neural Network node that was
replaced in version 14 of IBM® SPSS® Modeler ; some legacy streams may still contain this node.
Refresh source nodes on execution.
Select to automatically refresh all source nodes when running
the current stream. This action is analogous to clicking the Refresh button on a source node,
except that this option automatically refreshes all source nodes (except User Input nodes) for the
current stream.
Note: Selecting this option flushes the caches of downstream nodes even if the da ta has not
change d. Flushing occurs only once per running of the stream, though, which means that you can
still use downstream caches as temporary storage for a single running. For example, say that you
have set a cache midstream after a complex derive operation and that you have several graphs
and reports attached downstream of this Derive node. When running the stream, the cache at th e
Derive node will be flushed and r efilled but only for the first graph or report. Subsequ ent te r minal
nodes will read data from the Derive node cache.
Display field and value labels in output.
Displays field and value labels in ta bles, charts, and other
output. If labels do not exist, the field names a nd data values will be displayed instead. Labe ls are
turned off by default; however, you can toggle labels on an individua l basis elsewhere in SPSS
Modeler. You can also choose to display labels on the output window using a toggle button
availabl e on the toolbar.
Figure 5-16
Toolbar icon used to toggle field and value labels
Display execution times.
Displays individual executi on times for stream nodes on the Execution
Times tab after the stream is run. For more information, see the topic Viewing Node Executi on
Times on p. 67.
Save As Default.
The options specified app
ly only to the current stream. Click this button to set
these options as the default for all streams.
Setting date and time options for streams
These optio ns s pecify the format to use for various date and time expres sions in the current stream.