Propriété DimensionAttribute.DiscretizationMethod
Gets or sets the method to be used for discretization.
Espace de noms : Microsoft.AnalysisServices
Assembly : Microsoft.AnalysisServices (en Microsoft.AnalysisServices.dll)
Syntaxe
'Déclaration
Public Property DiscretizationMethod As DiscretizationMethod
Get
Set
'Utilisation
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)
Valeur de propriété
Type : Microsoft.AnalysisServices.DiscretizationMethod
A DiscretizationMethod object containing the method to be used for discretization.
Notes
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.
[!REMARQUE]
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 Méthodes de discrétisation (exploration de données).