CODEWITHSUNDEEP
pythonmachine-learningsvmscikitsscikit-learn
tomas
tomas

Reputation: 683

python scikits learn - SVM options

Just curious about two options in scikits learn SVM class. What does Scale_C and shrinking do? There wasn't much in the documentation. Scale C seems to be able to scale the C paramter appropriately for the training data.

Thanks

Upvotes: 2

Views: 734

Answers (1)

Fred Foo
Fred Foo

Reputation: 363487

scale_C=True (deprecated in the dev version and scheduled for removal in 0.12) causes the regularization parameter C to be divided by the number of samples before it is handed to the underlying LibSVM implementation.

shrinking enables or disables the "shrinking heuristic", described by Joachims 1999, that should speed up SVM training.

Upvotes: 2

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