package org.streaminer.stream.classifier.tree; import java.io.Serializable; public abstract class RegressionTreeNode implements Serializable { /** The unique class ID */ private static final long serialVersionUID = 7340528085839800436L; /** * @param blanks number of blanks to insert * @return a string representation of this node */ public abstract String toString(int blanks); public static final String LINE_SEPATATOR = System.getProperty("line.separator"); }