Package
weka.attributeSelection
Synopsis
A meta subset evaluator that makes its base subset evaluator cost-sensitive.
Available in Weka 3.6.x - 3.7.1. Available via the package management system for Weka >= 3.7.2 (costSensitiveAttributeSelection).
Options
The table below describes the options available for CostSensitiveAttributeEval.
Option | Description |
---|---|
costMatrix | Sets the cost matrix explicitly. This matrix is used if the costMatrixSource property is set to "Supplied". |
costMatrixSource | Sets where to get the cost matrix. The two options areto use the supplied explicit cost matrix (the setting of the costMatrix property), or to load a cost matrix from a file when required (this file will be loaded from the directory set by the onDemandDirectory property and will be named relation_name.cost). |
evaluator | The base evaluator to be used. |
onDemandDirectory | Sets the directory where cost files are loaded from. This option is used when the costMatrixSource is set to "On Demand". |
seed | The random number seed to be used. |
Capabilities
The table below describes the capabilites of CostSensitiveAttributeEval.
Capability | Supported |
---|---|
Class | Missing class values, Binary class, Nominal class |
Attributes | Empty nominal attributes, Date attributes, Numeric attributes, Unary attributes, Missing values, Nominal attributes, Binary attributes |
Min # of instances | 1 |