Universal tree interpreter for data mining models

1. A computer-implemented method of transforming a dataset to form a representation of a data mining model comprising the steps of:

receiving the dataset;

generating a callable version of the data mining model by encapsulating the data mining model in a callable wrapper that allows the data mining model to be directly called from other program code; and

generating a tree representing decisional logic of the data mining model using the dataset.

2. The computer-implemented method of claim 1 , wherein the generating step comprises the steps of:

creating a split and a node using output of the callable version of the data mining model on the dataset and on created data; and

for each node, repeating the step of creating a split and a node while there is at least a minimum number of data points of the dataset in the node.

3. The computer-implemented method of claim 2 , wherein the creating step comprises the steps of:

creating new data points based on a distribution of data in the dataset;

determining class membership for the created data points using the callable version of the data mining model;

determining a split location;

refining the split location; and

performing the split at the refined split location.

4. The computer-implemented method of claim 3 , wherein the step of determining class membership for the created data points comprises the step of:

for each created datapoint, scoring the datapoint with the callable version of the model.

5. The computer-implemented method of claim 4 , wherein the step of determining a split location comprises the step of:

looping over variables associated with both the dataset and the created data point and computing a splitting index.

6. The computer-implemented method of claim 5 , wherein the splitting index is a Gini index.

7. The computer-implemented method of claim 3 , wherein the representation of decisional logic of the data mining model comprises a decision tree.

8. The computer-implemented method of claim 3 , wherein the decision tree comprises a classification tree.

9. A computer program product for generating a representation of a data mining model process in an electronic data processing system, comprising:

a computer readable medium;

computer program instructions, recorded on the computer readable medium, executable by a processor, for performing the steps of:

receiving a dataset;

generating a callable version of the data mining model; and

generating a tree representing decisional logic of the data mining model using the dataset.

10. The computer program product of claim 9 , wherein the generating step comprises the steps of:

creating a split and a node using output of the callable version of the data mining model on the dataset and on created data; and

for each node, repeating the step of creating a split and a node while there is at least a minimum number of data points of the dataset in the node.

11. The computer program product of claim 10 , wherein the creating step comprises the steps of:

creating new data points based on a distribution of data in the dataset;

determining class membership for the created data points using the callable version of the data mining model;

determining a split location;

refining the split location; and

performing the split at the refined split location.

12. The computer program product of claim 11 , wherein the step of determining class membership for the created data points comprises the step of:

for each created datapoint, scoring the datapoint with the callable version of the model.

13. The computer program product of claim 12 , wherein the step of determining a split location comprises the step of:

looping over variables associated with both the dataset and the created data point and computing a splitting index.

14. The computer program product of claim 13 , wherein the splitting index is a Gini index.

15. The computer program product of claim 11 , wherein the representation of decisional logic of the data mining model comprises a decision tree.

16. The computer program product of claim 11 , wherein the decision tree comprises a classification tree.

17. A system for generating a representation of a data mining model, comprising:

a processor operable to execute computer program instructions; and

a memory operable to store computer program instructions executable by the processor, for performing the steps of:

receiving a dataset;

generating a callable version of the data mining model; and

generating a tree representing decisional logic of the data mining model using the dataset.

18. The system of claim 17 , wherein the generating step comprises the steps of:

creating a split and a node using output of the callable version of the data mining model on the dataset and on created data; and

for each node, repeating the step of creating a split and a node while there is at least a minimum number of data points of the dataset in the node.

19. The system of claim 18 , wherein the creating step comprises the steps of:

creating new data points based on a distribution of data in the dataset;

determining class membership for the created data points using the callable version of the data mining model;

determining a split location;

refining the split location; and

performing the split at the refined split location.

20. The system of claim 19 , wherein the step of determining class membership for the created data points comprises the step of:

for each created datapoint, scoring the datapoint with the callable version of the model.

21. The system of claim 20 , wherein the step of determining a split location comprises the step of:

looping over variables associated with both the dataset and the created data point and computing a splitting index.

22. The system of claim 21 , wherein the splitting index is a Gini index.

23. The system of claim 19 , wherein the representation of decisional logic of the data mining model comprises a decision tree.

24. The system of claim 19 , wherein the decision tree comprises a classification tree.