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HoldoutSeed 属性

Gets or sets the seed used to initialize partitioning of the MiningStructure into training and testing data sets[.]

命名空间：  Microsoft.AnalysisServices
程序集：  Microsoft.AnalysisServices（在 Microsoft.AnalysisServices.dll 中）

语法

声明
Public Property HoldoutSeed As Long
    Get
    Set
用法
Dim instance As MiningStructure
Dim value As Long

value = instance.HoldoutSeed

instance.HoldoutSeed = value

public long HoldoutSeed { get; set; }

public:
property long long HoldoutSeed {
    long long get ();
    void set (long long value);
}

member HoldoutSeed : int64 with get, set

function get HoldoutSeed () : long
function set HoldoutSeed (value : long)

属性值

类型：System. . :: . .Int64
An integer that contains the holdout seed. If 0, a hash of the ID of the MiningStructure is used as the seed. The default value is 0.

注释

Partitioning is random and data dependent. To ensure that a particular partition can be repeated, you must specify a seed.

Note   To enable creation of a testing data set, the CacheMode property of the mining structure must be set to the default value, KeepTrainingCases.

注意注意

SQL Server 2005 does not support creation of holdout partitions on a mining structure. You cannot use HoldoutSeed with a mining structure that is stored in an instance of SQL Server 2005 Analysis Services.