double[] splitAndZ = findLowestZNumericSplit(allInstances, attIndex);
if (splitAndZ[1] < m_search_smallestZ) {
m_search_smallestZ = splitAndZ[1];
m_search_bestInsertionNode = currentNode;
m_search_bestSplitter = new TwoWayNumericSplit(attIndex, splitAndZ[0]);
m_search_bestPathPosInstances = posInstances;
m_search_bestPathNegInstances = negInstances;
}
}