MiningModel 对象
挖掘模型是将在挖掘算法中使用的所有列和列定义的存储库。
创建 MiningModel 对象需要执行下列步骤：
创建 MiningModel 对象并填充基本属性。
这些基本属性包括对象名称、对象 ID（内部标识）和挖掘算法规范。
添加挖掘模型的列。必须将其中一列定义为事例键。
使用 MiningModel 对象的 Update 方法将该对象更新到服务器。
MiningModel 对象的处理可以独立于父 MiningStructure 中的其他模型。
下面的示例代码基于“Forecasting Sales Structure”挖掘结构创建 Microsoft 时序预测模型：
public static MiningModel CreateSalesForecastingMiningModel(MiningStructure ms)
{
if (ms.MiningModels.ContainsName("Sales Forecasting Model"))
{
ms.MiningModels["Sales Forecasting Model"].Drop();
}
MiningModel mm = ms.CreateMiningModel(true, "Sales Forecasting Model");
mm.Algorithm = MiningModelAlgorithms.MicrosoftTimeSeries;
mm.AlgorithmParameters.Add("PERIODICITY_HINT", "{12}");
MiningModelColumn amount = new MiningModelColumn();
amount.SourceColumnID = "Amount";
amount.Usage = MiningModelColumnUsages.Predict;
MiningModelColumn modelRegion = new MiningModelColumn();
modelRegion.SourceColumnID = "Model Region";
modelRegion.Usage = MiningModelColumnUsages.Key;
MiningModelColumn qty = new MiningModelColumn();
qty.SourceColumnID = "Quantity";
qty.Usage = MiningModelColumnUsages.Predict;
MiningModelColumn ti = new MiningModelColumn();
ti.SourceColumnID = "TimeIndex";
ti.Usage = MiningModelColumnUsages.Key;
mm.Update();
mm.Process(ProcessType.ProcessFull);
return mm;
}
{
if (ms.MiningModels.ContainsName("Sales Forecasting Model"))
{
ms.MiningModels["Sales Forecasting Model"].Drop();
}
MiningModel mm = ms.CreateMiningModel(true, "Sales Forecasting Model");
mm.Algorithm = MiningModelAlgorithms.MicrosoftTimeSeries;
mm.AlgorithmParameters.Add("PERIODICITY_HINT", "{12}");
MiningModelColumn amount = new MiningModelColumn();
amount.SourceColumnID = "Amount";
amount.Usage = MiningModelColumnUsages.Predict;
MiningModelColumn modelRegion = new MiningModelColumn();
modelRegion.SourceColumnID = "Model Region";
modelRegion.Usage = MiningModelColumnUsages.Key;
MiningModelColumn qty = new MiningModelColumn();
qty.SourceColumnID = "Quantity";
qty.Usage = MiningModelColumnUsages.Predict;
MiningModelColumn ti = new MiningModelColumn();
ti.SourceColumnID = "TimeIndex";
ti.Usage = MiningModelColumnUsages.Key;
mm.Update();
mm.Process(ProcessType.ProcessFull);
return mm;
}
