This selection displays a successfully built attribute importance model. Attribute importance ranks attributes according the influence that the attribute has in making predictions.
The following menus appear when the model is displayed in a new window:
The model viewer has the following tabs:
This tab displays the Type of the model (Attribute Importance), the Algorithm used to build the model (Minimum Description Length), and the Target Attribute name.
Oracle Data Mining 11g models can be built using Automatic Data Preparation (ADP). If the model was built using ADP, then Automatic Data Preparation has the value yes
.
The attributes used to build the model are displayed in the Attributes grid; the following information is displayed for each attribute:
To save the attributes information as a text file, click the Save As icon (a yellow arrow above a graphic of a page) above the Attributes grid.
To see the first 100 attributes listed in order of rank, click the Ranking tab.
The attributes are initially sorted by rank (descending importance); attributes with rank 1 are the most important.
Fetch Size specifies the number of attributes to display. The default is to display the 100 most important attributes. To change the number, type in a new value for Fetch Size, and click Refresh.
The upper part of the Ranking tab displays the Histogram. For each attribute, the importance is graphed.
To save the histogram to a file, click the Save As icon (a yellow arrow above a graphic of a page) above the Histogram grid.
Use the upward and downward pointing arrowheads to minimize or maximize the Histogram display.
In the lower part of the Ranking tab, the following information is displayed in the Ranks grid: Name of attribute, Rank and Importance. In general, importance can be less than 0; you can sort importance in two ways: as positive and negative numbers (the default) or by absolute value. To sort by absolute value, click the checkbox Sort importance based on absolute values.
If you do not wish to display the Ranks, click the downward pointing triangle just above the Ranks.
To sort the attributes by Name, Rank, or Importance, click the appropriate column heading. When you sort the attributes, the histogram is redrawn to reflect the sorting.
To save the ranks to a file, click the Save As icon (a yellow arrow above a graphic of a page) above the Ranks grid.
This tab describes the task used to build the model. It shows when the task ran, what input was used, and what output was created.
Copyright © 2006, 2008, Oracle. All rights reserved.