1. API Guide
  2. Using the Data Mining API
  3. Mining Unstructured Text
  4. Data Preparation for Text Features

33.3 Data Preparation for Text Features

The model details view for text features is DM$VXmodel_name.

The text feature view DM$VXmodel_name describes the extracted text features if there are text attributes present. The view has the following schema: 

Name                                Type
 --------------            ---------------------
 PARTITION_NAME                     VARCHAR2(128)
 COLUMN_NAME                        VARCHAR2(128)
 TOKEN                              VARCHAR2(4000)
 DOCUMENT_FREQUENCY                 NUMBER

Table 33-1 Text Feature View for Extracted Text Features

Column Name Description

PARTITION_NAME

A partition in a partitioned model to retrieve details

COLUMN_NAME

Name of the identifier column

TOKEN

Text token which is usually a word or stemmed word

DOCUMENT_FREQUENCY

A measure of token frequency in the entire training set