程序包 weka.core.pmml
类 Constant
java.lang.Object
weka.core.pmml.Expression
weka.core.pmml.Constant
- 所有已实现的接口:
Serializable
Class encapsulating a Constant Expression.
- 版本:
- $Revision 1.0 $
- 作者:
- Mark Hall (mhall{[at]}pentaho{[dot]}com
- 另请参阅:
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构造器概要
构造器构造器说明Constant
(Element constant, FieldMetaInfo.Optype opType, ArrayList<Attribute> fieldDefs) Construct an new Constant Expression. -
方法概要
修饰符和类型方法说明double
getResult
(double[] incoming) Get the result of evaluating the expression.getResultCategorical
(double[] incoming) Gets the result of evaluating the expression when the optype is categorical or ordinal as the actual String value.static void
从类继承的方法 weka.core.pmml.Expression
getExpression, getExpression, getFieldDef, getFieldDefIndex, getOptype, getResultContinuous, setFieldDefs, toString
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构造器详细资料
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Constant
public Constant(Element constant, FieldMetaInfo.Optype opType, ArrayList<Attribute> fieldDefs) throws Exception Construct an new Constant Expression.- 参数:
constant
- the xml Element containing the ConstantopType
- the optype for the ConstantfieldDefs
- an ArrayList of Attributes for the fields that this Expression might need to access (not needed for a constant!)- 抛出:
Exception
- if the optype is specified as continuous and there is a problem parsing the value of the Constant
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方法详细资料
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getResult
public double getResult(double[] incoming) Get the result of evaluating the expression. In the case of a continuous optype, a real number is returned; in the case of a categorical/ordinal optype, the index of the nominal value is returned as a double.- 指定者:
getResult
在类中Expression
- 参数:
incoming
- the incoming parameter values- 返回:
- the result of evaluating the expression
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getResultCategorical
Gets the result of evaluating the expression when the optype is categorical or ordinal as the actual String value.- 指定者:
getResultCategorical
在类中Expression
- 参数:
incoming
- the incoming parameter values- 返回:
- the result of evaluating the expression
- 抛出:
Exception
- if the optype is continuous
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main
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toString
- 覆盖:
toString
在类中Expression
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