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4.6. OTHER OPERATORS
4.6
4.6.1
Other Operators
ComputeSVMError
A special evaluation operator used for obtaining some results for the regression SVM. Values in TheTargetValueAttribute are compared to those in ThePredictedValueAttribute. The average loss is determined taking the asymmetric loss function into account. That is why the SVM parameters are needed
here as well. Note that they must have the same value as for the operator
SupportVectorMachineForRegression, which must have preceded this evaluation operator in the chain.
ParameterName
TheInputConcept
TheTargetValueAttribute
ThePredictedValueAttribute
LossFunctionPos
LossFunctionNeg
Epsilon
4.6.2
ObjType
CON
BA
BA
V
V
V
Type
IN
IN
IN
IN
IN
IN
Remarks
inherited
actual values
predicted values
(same values
as in SVMForRegression)
PrepareForYale
This operator has no output for MiningMart. It produces an XML file that
can be read by the YALE software. The file will be given the name provided
in ExperimentFileName. In YALE, this will provide a very basic experiment
that starts by reading data from the database, that is, from the business data
schema used by MiningMart. This operator makes the combination of YALE
and MiningMart more convenient.
If TheInputConcept to this operator has more than one Columnset, the
YALE file produced will contain the YALE operator IteratingOperatorChain,
and for each Columnset a query file will be produced that is read in one iteration of the operator chain in YALE. The parameter QueryFilePrefix is used for
this purpose; the query files produced will have a number added to the given
prefix, starting with 1. If there is only one Columnset in TheInputConcept,
the parameter QueryFilePrefix is ignored. Both filename parameters expect full
paths.
The parameters TheLabel and ThePrimaryKey are optional. They provide
information to YALE about the label (for learning) and the primary key of the
data set. Of course, this information can also be added manually in YALE.
ParameterName
TheInputConcept
TheLabel
ThePrimaryKey
ExperimentFileName
QueryFilePrefix
ObjType
CON
BA
BA
V
V
Type
IN
IN
IN
IN
IN
Remarks
optional
optional
complete path and filename
only for multiple columnsets