|Oracle® Database SQL Language Reference
11g Release 1 (11.1)
|PDF · Mobi · ePub|
This function is for use with decision tree models and single-feature Adaptive Bayes Network (ABN) models created by the
DBMS_DATA_MINING package or with the Oracle Data Mining Java API. It returns an XML string containing model-specific information related to the scoring of the input row. In this release, the return value takes the following form:
<Node id= "integer"/>
integer is the identifier of a data mining tree node. The form of the output is subject to change. It may be enhanced to provide additional prediction information in future releases.
mining_attribute_clause behaves as described for the
PREDICTION function. Refer to mining_attribute_clause.
Oracle Data Mining Concepts for detailed information about Oracle Data Mining
Oracle Data Mining Administrator's Guide for information on the demo programs available in the code
Oracle Data Mining Application Developer's Guide for detailed information about real-time scoring with the Data Mining SQL functions
The following example uses all attributes from the
mining_data_apply_v view that are relevant predictors for the
DT_SH_Clas_sample decision tree model. For customers who work in technical support and are under age 25, it returns the tree node that results from scoring those records with the
This example, and the prerequisite data mining operations, including the creation of the view, can be found in the demo files
$ORACLE_HOME/rdbms/demo/dmdtdemo.sql. General information on data mining demo files is available in Oracle Data Mining Administrator's Guide. The example is presented here to illustrate the syntactic use of the function.
SELECT cust_id, education, PREDICTION_DETAILS(DT_SH_Clas_sample using *) treenode FROM mining_data_apply_v WHERE occupation = 'TechSup' AND age < 25 ORDER BY cust_id; CUST_ID EDUCATION TREENODE ---------- --------------------- ------------------------- 100234 < Bach. <Node id="21"/> 100320 < Bach. <Node id="21"/> 100349 < Bach. <Node id="21"/> 100419 < Bach. <Node id="21"/> 100583 < Bach. <Node id="13"/> 100657 HS-grad <Node id="21"/> 101171 < Bach. <Node id="21"/> 101225 < Bach. <Node id="21"/> 101338 < Bach. <Node id="21"/> 9 rows selected.