The GainsChartBlox draws a gains chart of a classification model
or of a regression model. You must specify the type of model, for example,
classification or regression, the model name, and the data source by nesting
a <iminer:classificationModel> tag or a <iminer:regressionModel>
tag.
The gains chart displays correct predictions, a random curve, and an optimum curve.
Syntax
<iminer:gainsChart [attribute="value"] > ... </iminer:gainsChart>
where:
- attribute
- is one of the attributes that are listed in the attribute table
- value
- is a valid value for the attribute
Tag description
The following table shows the attributes of the <iminer:gainsChart> tag:
| Tag attribute | Required | Default value | Header |
|---|---|---|---|
| ID | Yes | - | The unique identifier for this instance of GainsChartBlox. |
| targetFieldValue | N0 | - | The target field value for a classification model. This attribute is mandatory if a classification model tag is nested. If a regression model is used, this attribute is not required. |
| height | No | 400® | The height of the gains chart. |
| width | No | 600 | The width of the gains chart. |
Example
The following coding example shows how to use the GainsChartBlox tag:
<iminer:gainsChart id="myGainsChart" height="300" width="500" targetFieldValue="NO"> <iminer:classificationModel name="BANK.BANKCARD_PRED" dataSourceName="QCCDB2" /> </iminer:gainsChart>
The following figure shows a gains chart with correct predictions, a random curve, and an optimum curve.
Figure 1. The
Gains chart including correct predictions, the random curve, and the optimum
curve