Incremental Use Of Ctxsys.drvodm.feature_prep (Doc ID 1955146.1)

Last updated on DECEMBER 17, 2014

Applies to:

Oracle Text - Version 11.2.0.3 and later
Information in this document applies to any platform.

Goal

Currently use ctxsys.drvodm.feature_prep to extract features to build svm models like this:

CREATE TABLE model_src.km_pvy4_labeled_DATA_TERMS AS
select sequence_id, attribute_id, value
 FROM TABLE(ctxsys.drvodm.feature_prep (
  index_name=>'km_pvy4_labeled_ix1',
  docid=>'contentid',
  cattab=>'km_pvy4_labeled_FEAT_CAT',
  catdocid=>'id',
  catid=>'cat',
  restab=>'km_pvy4_labeled_DATA_EXT_OUT',
  preference=>'TRY_L_FEAT'));

This extracts features for all documents in the index. It takes too long to extract everything since the index is huge.


If more docs are indexed, Is there a way to just extract features for new docs and not all documents in the index?
 

Solution

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