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Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-02 |
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# PREDICTION_DETAILS

Syntax

Description of the illustration prediction_details.gif

mining_attribute_clause::=

Description of the illustration mining_attribute_clause.gif

Purpose

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"/>

where `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.

The `mining_attribute_clause` behaves as described for the `PREDICTION` function. Please refer to mining_attribute_clause.

See Also: Oracle Data Mining Concepts for detailed information on Oracle Data Mining features Oracle Data Mining Administrator's Guide for information on the demo programs available in the code Oracle Data Mining Application Developer's Guide for information on writing Oracle Data Mining applications

Example

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 `DT_SH_Clas_sample` model.

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.