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java.lang.Object edu.cmu.minorthird.classify.sequential.CMMTweaker
public class CMMTweaker
Adjust the precision-recall of a CMM that is based on an array of hyperplanes, by adjusting the bias term of the hyperplane associated with the background (NEG) class. This is intended mainly for adjusting precision-recall performance of extractors learned by CollinsPerceptronLearner and CRFLearner.
Field Summary |
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Fields inherited from interface edu.cmu.minorthird.classify.sequential.SequenceConstants |
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HISTORY_FEATURE, NULL_CLASS_NAME |
Constructor Summary | |
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CMMTweaker()
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Method Summary | |
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double |
newBias()
Return the value of bias term after tweaking. |
double |
oldBias()
Return the value of bias term before the last tweak. |
CMM |
tweak(CMM cmm,
double bias)
Return a copy of a CMM in which the one bias term, for the hyperplane corresponding to the NEG class, has been changed. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public CMMTweaker()
Method Detail |
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public double oldBias()
public double newBias()
public CMM tweak(CMM cmm, double bias)
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