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Chapter 12
Figure 12-1
System Options dialog box
Maximum memory.
Select to impose a limit in megabytes on SPSS Modeler’s memory usage. On
some platforms, SPSS Modeler limits its process size to reduce the toll on computers with limited
resources or heavy loads. If you are dealing with large amounts of data, this may cause an “ out of
memory” error. You can eas e memory load by specifying a new threshold.
Use system locale.
This option is selected by default and set to English (United States). Des elect
to specify another language from th e list of available languages and locales.
Managing Memory
In a ddition to the Maximum memory setting specified in the System Options dialog box, there are
several ways you can optimize memory usage:
Set up a cache on any nonterminal node so that the data is read from the cache rather than
retrieved from the data source when you run the data stream. This will help decrease the
memory load for large data sets. For more information, see the topic Caching Options for
Nodes in Chapter 5 on p. 50.
Adjust the Maximum members for nominal fields option in the stream properties dialog box.
This option specifies a maximum number of members for nominal fields after which the
measurem ent level of the field becomes Typeless. For more information, see the topic Setting
general options for streams in Chapter 5 on p. 55.
Force IBM® SPSS® Modeler to free up memory by clicking in the lower right corner of
the window where the memory that SPSS Modeler is using and the amount allocated are
display ed (xxMB / xxMB ) . Clicking this region turns it a darker shade, after which memory
allocation figures will drop. Once the region returns to its regular color, SPSS Modeler has
freed up all the memory possible.
Setting Default Directories
You can sp ecify the default directory used for file browsers and output by selecti ng Set Directory or
Set Server Directory from the File menu.
Set Directory.
You can use this option to set the working directory. The default working
directory is bas ed on the installation path o f your version of IBM® SPSS® Modele r or from
the comma nd line path used to launch SPSS Modeler. In local mode, the working directory