User's Manual

57
Building Streams
Maximum number of rows to show in Data Preview. Specify the n umber 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 maxim um numb er of members for
nominal (set) fields after which the data type of the field becomes Typeless. Th is 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 a vailable f or
modeling.
Limit set size for Kohonen, and K-Means modeling. Select to specify a maximum number of members
for nominal fields used in Kohonen n ets and K-Means modeling. The default set size is 20, after
which the field is ignored and a warning is ra is ed, pr oviding in f ormation on the field in question.
Note that, for compatibility, this option also applies to the old Neural Netwo r k node that was
replaced in version 14 of IBM® SPSS® Modeler; some legacy streams may still con tain 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 sourc e node,
except that this option automatically refreshes all source nodes (except Use r Input nodes) fo r the
current stream.
Note: Selecting this option flushes the caches of downstre am nodes even if the data has not
change d. Flushing occurs only once per running of the stream, tho ugh, 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 mi dstream after a complex derive operation and that you have several graphs
and reports a ttached downstream of this Derive node. When running the stream, the cache at the
Derive node will be flushed and refilled but only for the first graph or report. Subsequent terminal
nodes will read d ata from the De r ive node cache.
Display field and value labels in output. Displays field and value labels in tables, charts, and other
output. If labels do not exist, the field names and data values will be displayed instead. Labels are
turned off by default; however, you can toggle l abels on an individual b asis elsewhere in SPS S
Modeler. You can also choose to display labels on the output window usi ng 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 execution times for stre am node s on the Execution
Times tab after the stream is run. For more information, see the t opic Viewing Node Execution
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 options specify the form at to use for various date and time expression s in the current stream .