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Text must undergo a transformation process before it can be mined. After the data has been properly transformed, a case table can be used for building, testing, or scoring data mining models. The case table must be a relational table. It cannot be created as a view.
A Source table for Oracle Data Mining can include one or more columns of text. A text column cannot be used as a target.
The following Oracle Data Mining algorithms support text:
Anomaly Detection (one-class Support Vector Machine)
Classification algorithms: Naive Bayes, Generalized Linear Models, and Support Vector Machine
Decision Tree when you connect to Oracle Database 12c
Clustering algorithms: k- Means and Expectation Maximization
Feature Extraction algorithms: Nonnegative Matrix Factorization, Singular Value Decomposition, and Principal Components Analysis
Regression algorithms: Generalized Linear Models and Support Vector Machine
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Note: These algorithms do not support text:
Any text attributes are automatically filtered out for model builds when you use O-Cluster or Decision Tree connected to Oracle Database 11g. |