netkit.classifiers.aggregators
Class Ratio

java.lang.Object
  netkit.classifiers.aggregators.AggregatorImp
      netkit.classifiers.aggregators.AggregatorByValueImp
          netkit.classifiers.aggregators.Ratio

All Implemented Interfaces:

Aggregator, AggregatorByValue

public final class Ratio
extends AggregatorByValueImp

The Ratio aggregator counts the ratio of times a specific value of a given attribute is observed in the neighborhood of a node in the graph. Ratio is defined as how often the value is observed divided by all the observed values. In other words, if 'red' is observed in three neighbors and if colors other than red are observed in seven neighbors, then the ratio of 'red' is 0.3. Neighbors for which no value is observed are not counted.

Author:

Sofus A. Macskassy (sofmac@gmail.com)

Field Summary

Fields inherited from class netkit.classifiers.aggregators.AggregatorByValueImp

attributeValue

Fields inherited from class netkit.classifiers.aggregators.AggregatorImp

aggregateCache, attribIdx, attribute, edgeType, name, type

Constructor Summary

Ratio(EdgeType edgeType, Attribute attribute, double value)

Method Summary

double

getValue(Node n, Estimate prior) Gets the value stored in this object for the supplied Node.

Methods inherited from class netkit.classifiers.aggregators.AggregatorByValueImp

getAttributeValue, toString

Methods inherited from class netkit.classifiers.aggregators.AggregatorImp

getAttribute, getAttributeIndex, getEdgeType, getName, getNodeInfo, getType, getValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface netkit.classifiers.aggregators.Aggregator

getAttribute, getEdgeType, getName, getType, getValue

Constructor Detail

Ratio

public Ratio(EdgeType edgeType,
             Attribute attribute,
             double value)

Method Detail

getValue

public double getValue(Node n,
                       Estimate prior)

Description copied from interface: Aggregator

Gets the value stored in this object for the supplied Node.

Parameters:

n - a Node for which to calculate and/or supply a value.

prior - current priors for unknown neighbor values.

Returns:

the value stored in this object for the supplied Node.