private readonly int maxFeatureTypeIndex; // 特征组的最大索引
/// <summary>
/// 构造函数：多组特征，最后一组得到结果
/// </summary>
/// <param name="treename">决策树的表所在的数据库名</param>
/// <param name="classname">类别的字段名</param>
/// <param name="treeFeatureAsType">当前参与建树的所有特征，按类型排列</param>
public MultipleClassicDecisionTree(string treename, string classname, List <string>[] treeFeatureAsType)
{
connectdb = new ConnectToDB(treename);
this.classname = classname;
this.treeFeatureAsType = treeFeatureAsType;
maxFeatureTypeIndex = treeFeatureAsType.Length - 1;
}
private readonly string classname; // 类别的字段名
/// <summary>
/// 构造函数：一组特征直接得到结果
/// </summary>
/// <param name="treename">决策树的表所在的数据库名</param>
/// <param name="classname">类别的字段名</param>
public ClassicDecisionTree(string treename, string classname)
{
connectdb = new ConnectToDB(treename);
this.classname = classname;
}