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Posted to dev@mahout.apache.org by "Ted Dunning (JIRA)" <ji...@apache.org> on 2014/06/08 00:08:01 UTC

[jira] [Created] (MAHOUT-1575) Conjugate gradient assumes best case scenario for convergence

Ted Dunning created MAHOUT-1575:
-----------------------------------

             Summary: Conjugate gradient assumes best case scenario for convergence
                 Key: MAHOUT-1575
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1575
             Project: Mahout
          Issue Type: Bug
            Reporter: Ted Dunning


The conjugate gradient solve that we have assumes that it will converge within the theoretical n steps where n is the size of the input.  In fact, convergence may not happen within exactly that number of steps due to numerical issues so we should allow for a few extra iterations.





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