The SPSS Classification Trees add-on module creates classification and decision trees directly within SPSS to help you better identify groups, discover relationships between groups, and predict future events.
You can use classification and decision trees for segmentation, stratification, prediction, data reduction, and variable screening, interaction identification, category merging, and discretizing continuous variables.
Highly visual classification and decision trees enable you to present categorical results in an intuitive manner—so you can more clearly explain categorical results to non-technical audiences. Classification and decision trees enable you to explore your results and visually determine how your model flows. Visual results can help you find specific subgroups and relationships that you might not uncover using more traditional statistics. Because classification and decision trees break down the data into branches and nodes, you can easily see where a group splits and terminates.
SPSS Classification Trees diagrams, tables, and graphs are easy to interpret.
Use the highly visual trees to discover relationships that are currently hidden in your data (top).
Use tree model results to score cases directly in SPSS (bottom).
SPSS Classification Trees includes four established tree-growing algorithms:
With four algorithms, you have the ability to try different types of tree-growing algorithms and find the one that best fits your data.
Since you use SPSS Classification Trees within the SPSS interface, you can create classification trees directly within SPSS and conveniently use the information that results to segment and group cases directly within the data. There is no back and forth between SPSS and other software. Additionally, you can generate selection or classification/prediction rules in the form of SPSS syntax, SQL statements, or simple text (through syntax). You can display these rules in the Viewer and save them to an external file for later use to make predictions about individual and new cases. If you'd like to use your results to score other data files, you can write information from the tree model directly to your data or create XML models for use in SPSS Server.
Anticipated availability is September 2005. You can order new licenses of SPSS Classification Trees 14.0 directly from the Web store. If you would like to pre-order an upgrade to SPSS Classification Trees 14.0, please contact an SPSS Inc. representative at 1.800.543.5815 (North American customers only). To find out the availability of SPSS 14.0 in your area, contact your local office.
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