org.apache.ctakes.ytex.kernel.evaluator

Class NamedEntityNegationKernel

java.lang.Object

org.apache.ctakes.ytex.kernel.evaluator.ConvolutionKernel

org.apache.ctakes.ytex.kernel.evaluator.NamedEntityNegationKernel

All Implemented Interfaces:

Kernel

public class NamedEntityNegationKernel
extends ConvolutionKernel

Evaluate negation status and certainty of named entities. If negation status differs, multiply convolution on concepts by -1. If certainty differs, multiply by 0.5. This assumes that possible values for certainty are certain/uncertain.

Constructor Summary

Constructors

Constructor and Description
NamedEntityNegationKernel()

Method Summary

Modifier and Type	Method and Description
double	evaluate(Object c1, Object c2) c1 and c2 must be Nodes.

Methods inherited from class org.apache.ctakes.ytex.kernel.evaluator.ConvolutionKernel

getDelegateKernel, getNodeType, getPow, setDelegateKernel, setNodeType, setPow

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NamedEntityNegationKernel

public NamedEntityNegationKernel()

Method Detail

evaluate

public double evaluate(Object c1,
                       Object c2)

Description copied from class: ConvolutionKernel

c1 and c2 must be Nodes. if the nodeType field is set, the type of the Nodes must match nodeType field for us to evaluate the delegateKernel on them.

Specified by:

evaluate in interface Kernel

Overrides:

evaluate in class ConvolutionKernel

Returns:

sum( sum( K(child(i),child(j) ) ) )