Propriedade do RDL DimensionAttribute.DiscretizationMethod

Artigo
04/26/2013

Gets or sets the method to be used for discretization.

Namespace: Microsoft.AnalysisServices
Assembly: Microsoft.AnalysisServices (em Microsoft.AnalysisServices.dll)

Sintaxe

'Declaração
Public Property DiscretizationMethod As DiscretizationMethod 
    Get 
    Set
'Uso
Dim instance As DimensionAttribute 
Dim value As DiscretizationMethod 

value = instance.DiscretizationMethod

instance.DiscretizationMethod = value

public DiscretizationMethod DiscretizationMethod { get; set; }

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

member DiscretizationMethod : DiscretizationMethod with get, set

function get DiscretizationMethod () : DiscretizationMethod 
function set DiscretizationMethod (value : DiscretizationMethod)

Valor da propriedade

Tipo: Microsoft.AnalysisServices.DiscretizationMethod
A DiscretizationMethod object containing the method to be used for discretization.

Comentários

The value of DiscretizationMethod determines how values for the DimensionAttribute are discretized, or organized into a specific set of groups.

This property can be set to the following values:

Value	Description
Automatic	Equivalent to the AUTOMATIC discretization method for mining structure columns.
EqualAreas	Equivalent to the EQUAL_AREAS discretization method for mining structure columns.
Clusters	Equivalent to the CLUSTERS discretization method for mining structure columns.
Thresholds	Equivalent to the THRESHOLDS discretization method for mining structure columns.
EqualRanges	Equivalent to the EQUAL_RANGES discretization method for mining structure columns.

For data mining, the method that is used to discretize data can be different depending on whether your data is relational or stored in an OLAP dimension.

For OLAP data mining, the algorithm automatically computes the number of buckets to generate, by using the following equation, where n is the number of distinct values of data in the column:

Number of Buckets = sqrt(n)

If you do not want Analysis Services to calculate the number of buckets, you can use the?DiscretizationBucketCount property to manually specify the number of buckets.

Observação
In a relational data mining solution, you specify the number of buckets by setting the value of the DiscretizationBucketCount property. This property defaults to 5.

For more information about discretization methods in data mining solutions, see Métodos de discretização (mineração de dados).

Consulte também

Referência

DimensionAttribute Classe

Namespace Microsoft.AnalysisServices

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