Detail (OC)

The Details tab enables you to view details for a cluster. You can discover what values of an attribute are in the selected cluster. The viewer supports filtering so that only selected probabilities are displayed.

The following information is displayed:

• Cluster: The ID of the cluster being viewed. You can change the cluster by selecting a different ID. Select Leaves Only to view terminal clusters only.

• Fetch Size: The number of columns selected. The default is 50. You can change the Fetch Size. If you change the Fetch Size, click Query.

The grid lists the attributes in the cluster. For each attribute, the following information is displayed:

• Attribute: An attribute is a predictor in a predictive model or an item of descriptive information in a descriptive model. Data attributes are the columns of data that are used to build a model. Data attributes undergo transformations so that they can be used as categoricals or numericals by the model. Categoricals and numericals are model attributes.

• Histogram: The attribute values in the selected cluster are displayed as a histogram.

  To view a larger version of the histogram, select an attribute. The histogram is displayed below the grid. Place the cursor over a bar in the histogram to see the details of the histogram including the exact value.

• Confidence: Displayed as both a number and with a bar indicating a percentage. If the confidence is very small, then no bar is displayed.

• Support: The number of cases.

• Mean: Displayed for numeric attributes.

• Mode: Displayed for categorical attributes.

• Variance

You can perform the following tasks:

• Sort the attributes in the cluster. To sort, click the appropriate column heading in the grid. For example, to sort by attribute name, click Attribute. The attributes are sorted by:

  • Confidence

  • Support

  • Mean

  • Mode

  • Variance

  • Attribute name

• Search the attribute list for a specific attribute name or for a specific value of mode. To search, use the search box next to .

• Search the grid by Attribute. The drop down list enables you to search the grid by Attribute (the default) or by Mode. Enter the search term in the search field. To clear a search, click .

Other Tabs: The OC Model Viewer has this other tab:

• Settings (OC)