/**
* internal function for determining the class distribution for an instance, will be overridden by
* derived classes. <br>
* Here we just retrieve the class value for the given instance that was calculated during
* building our classifier. It just returns "1" for the class that was predicted, no real
* distribution. Note: the ReplaceMissingValues filter is applied to a copy of the given instance.
*
* @param instance the instance to get the distribution for
* @return the distribution for the given instance
* @see Classifier#distributionForInstance(Instance)
* @see ReplaceMissingValues
* @throws Exception if something goes wrong
*/
protected double[] getDistribution(Instance instance) throws Exception {
double[] result;
int i;
result = new double[instance.numClasses()];
for (i = 0; i < result.length; i++) result[i] = 0.0;
i = Arrays.binarySearch(m_LabeledTestset, instance, new InstanceComparator(false));
if (i >= 0) {
result[(int) m_LabeledTestset[i].classValue()] = 1.0;
} else {
CollectiveHelper.writeToTempFile("train.txt", m_TrainsetNew.toString());
CollectiveHelper.writeToTempFile("test.txt", m_TestsetNew.toString());
throw new Exception(
"Cannot find test instance: "
+ instance
+ "\n -> pos="
+ i
+ " = "
+ m_LabeledTestset[StrictMath.abs(i)]);
}
return result;
}
/**
* generates a filename with a certain suffix for the logQuality method
*
* @param suffix the suffix
* @return the generated filename
* @see #logQuality(int,int)
*/
protected String createFilename(String suffix) {
String result;
result =
this.getClass().getName()
+ "-"
+ CollectiveHelper.generateMD5(Utils.joinOptions(this.getOptions()))
+ "-"
+ (m_Trainset == null
? "null"
: m_Trainset.relationName().replaceAll("-weka\\.filters\\..*", ""))
+ "-R"
+ getNumRestarts()
+ "-I"
+ getNumIterations()
+ "-E"
+ m_EvaluationType
+ "-C"
+ m_ComparisonType
+ suffix;
return result;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for displaying in the explorer/experimenter gui
*/
public String logTipText() {
return "Whether to log internal data to the tmp directory ("
+ CollectiveHelper.getTempPath()
+ ").";
}
