提升图工具

“提升图”工具产生一个累积捕获响应图和增量响应率图，以可视化的方式评估在不同二元（是/否）分类模型之间对比的准确率（如预测评估预期经济影响的模型）。

Both of these charts are based on aggregating data into 10 groups (deciles) that are ordered based on the predicted probability of a favorable response for each model, and then comparing this response to what would be expected if the selection of prospects was done randomly. In the case of the cumulative response chart, the chart examines what percentage of the total response that would be obtained if all customers in an organization's database were contacted is obtained by contacting the best 10 percent, 20 percent, and so on based on model predictions. The x (horizontal) axis of the chart is the percentage of the database contacted, while the y (vertical) axis is the percentage of the total response captured by going up to that "best" decile of the database based on the model.

For example, the best 20 percent of prospects based on the model may represent 50 percent of the favorable response that would be obtained if all prospects were contacted. The incremental response rate chart gives the favorable response rate for each of the model-based ordered decile groups in the database. In addition, the tool produces a gains table and measures of the area under the curve and the Gini coefficient to provide overall comparative metrics of the performance of different models when the cumulative captured response chart option is selected, and a table of response rates at different deciles for each model when the incremental response rate option is selected.

此工具使用 R 工具。转至选项下载预测工具，并登录到 Alteryx 下载和许可证门户以安装 R 工具和 R 工具使用的软件包。请访问下载和使用预测工具。