/// <summary> Creates split on enumerated attribute. /// /// </summary> /// <exception cref="Exception">if something goes wrong /// </exception> private void handleEnumeratedAttribute(Instances trainInstances) { Instance instance; m_distribution = new Distribution(m_complexityIndex, trainInstances.numClasses()); // Only Instances with known values are relevant. System.Collections.IEnumerator enu = trainInstances.enumerateInstances(); //UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'" while (enu.MoveNext()) { //UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'" instance = (Instance) enu.Current; if (!instance.isMissing(m_attIndex)) { //UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'" m_distribution.add((int) instance.value_Renamed(m_attIndex), instance); } } // Check if minimum number of Instances in at least two // subsets. if (m_distribution.check(m_minNoObj)) { m_numSubsets = m_complexityIndex; m_infoGain = infoGainCrit.splitCritValue(m_distribution, m_sumOfWeights); m_gainRatio = gainRatioCrit.splitCritValue(m_distribution, m_sumOfWeights, m_infoGain); } }
/// <summary> Creates split on enumerated attribute. /// /// </summary> /// <exception cref="Exception">if something goes wrong /// </exception> private void handleEnumeratedAttribute(Instances trainInstances) { Distribution newDistribution, secondDistribution; int numAttValues; double currIG, currGR; Instance instance; int i; numAttValues = trainInstances.attribute(m_attIndex).numValues(); newDistribution = new Distribution(numAttValues, trainInstances.numClasses()); // Only Instances with known values are relevant. System.Collections.IEnumerator enu = trainInstances.enumerateInstances(); //UPGRADE_TODO: Method 'java.util.Enumeration.hasMoreElements' was converted to 'System.Collections.IEnumerator.MoveNext' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationhasMoreElements'" while (enu.MoveNext()) { //UPGRADE_TODO: Method 'java.util.Enumeration.nextElement' was converted to 'System.Collections.IEnumerator.Current' which has a different behavior. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1073_javautilEnumerationnextElement'" instance = (Instance) enu.Current; if (!instance.isMissing(m_attIndex)) { //UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'" newDistribution.add((int) instance.value_Renamed(m_attIndex), instance); } } m_distribution = newDistribution; // For all values for (i = 0; i < numAttValues; i++) { if (Utils.grOrEq(newDistribution.perBag(i), m_minNoObj)) { secondDistribution = new Distribution(newDistribution, i); // Check if minimum number of Instances in the two // subsets. if (secondDistribution.check(m_minNoObj)) { m_numSubsets = 2; currIG = m_infoGainCrit.splitCritValue(secondDistribution, m_sumOfWeights); currGR = m_gainRatioCrit.splitCritValue(secondDistribution, m_sumOfWeights, currIG); if ((i == 0) || Utils.gr(currGR, m_gainRatio)) { m_gainRatio = currGR; m_infoGain = currIG; m_splitPoint = (double) i; m_distribution = secondDistribution; } } } } }