Content Element (ASSL)
Describes the content of the column in the MiningStructure element.
語法
<ScalarMiningStructureColumn>
...
<Content>...</Content>
...
</ScalarMiningStructureColumn>
Element Characteristics
| Characteristic | Description |
|---|---|
Data type and length |
String (enumeration) |
Default value |
None |
Cardinality |
1-1: Required element that can occur once and only once. |
Element Relationships
| Relationship | Element |
|---|---|
Parent element |
|
Child elements |
None |
備註
This enumeration describes the type of content represented by a mining structure column, and can be extended as needed by mining algorithm providers. For more information about content types, see 內容類型 (資料採礦).
The values listed in the following table are typically supported by all mining algorithm providers.
Value
Description
Discrete
The column contains discrete values.
Continuous
The values for the column define a continuous set of numeric data.
Discretized
The values in the column represent groups (or buckets) of values derived from a continuous column.
Ordered
The values for the column define an ordered set.
Cyclical
The values for the column define a cyclical ordered set.
Probability
The values for the column specify a probability for the columns contained in the ClassifiedColumns element of the parent ScalarMiningStructureColumn.
Variance
The values for the column specify a variance for the columns contained in the ClassifiedColumns element of the parent ScalarMiningStructureColumn.
StdDev
The values for the column specify a standard deviation for the columns contained in the ClassifiedColumns element of the parent ScalarMiningStructureColumn.
ProbabilityVariance
The values for the column specify a probability variance for the columns contained in the ClassifiedColumns element of the parent ScalarMiningStructureColumn.
ProbabilityStdDev
The values for the column specify a probability standard deviation for the columns contained in the ClassifiedColumns element of the parent ScalarMiningStructureColumn.
Support
The values for the column specify support information for the column contained in the ClassifiedColumns element of the parent ScalarMiningStructureColumn.
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附註：
This column is provided as part of the standard for third party mining algorithm providers.
附註：
Algorithms provided by Microsoft do not have any use for this column.
Key
The column is a key column.
附註：
This content type is applicable only to key columns, in which the IsKey element is set to True.
In addition to these standard values, mining algorithm providers included with Microsoft SQL Server 2005 Analysis Services (SSAS) support the values in the following table.
Value
Description
Key Sequence
The column is a key column, and the values for the column represent a sequence of events.
附註：
This content type is applicable only to key columns, in which the IsKey element is set to True.
Key Time
The column is a key column, and the values for the column represent time measurement units.
附註：
This content type is applicable only to key columns, in which the IsKey element is set to True.
Sequence
The values for the column represent a sequence of events.
Time
The values for the column represent time measurement units.
The enumeration corresponding to the allowed values for Content in the Analysis Management Objects (AMO) object model is ScalarMiningStructureColumn.
請參閱
參考
ClassifiedColumns Element (ASSL)
Properties (ASSL)