getWorkflow {performanceEstimation}

Obtain the workflow object corresponding to an ID

Description

This function can be used to obtain the Workflow object corresponding to an ID used in a performance estimation experiment. This allows you for instance to check the full details of the workflow corresponding to that ID (e.g. the function implementing the workflow, the parameters and their values, etc.)

Usage

getWorkflow(var, obj)

Arguments

var

The string with the workflow ID

obj

A ComparisonResults object with the data from a performance estimation experiment

Value

A Workflow object

Author(s)

Luis Torgo [e-mail]

References

Torgo, L. (2014) An Infra-Structure for Performance Estimation and Experimental Comparison of Predictive Models in R. arXiv:1412.0436 [cs.MS] http://arxiv.org/abs/1412.0436

See Also

Workflow, runWorkflow, performanceEstimation

Examples

## Not run: 
## Estimating MSE for 3 variants of both
## regression trees and SVMs, on  two data sets, using one repetition
## of 10-fold CV
library(e1071)
library(DMwR)
data(swiss)
data(mtcars)

## running the estimation experiment
res <- performanceEstimation(
  c(PredTask(Infant.Mortality ~ .,swiss),PredTask(mpg ~ ., mtcars)),
  c(workflowVariants(learner="svm",
                     learner.pars=list(cost=c(1,10),gamma=c(0.01,0.5))),
    workflowVariants(learner="rpartXse",
                     learner.pars=list(se=c(0,0.5,1)))
  ),
  EstimationTask("mse",method=CV(nReps=2,nFolds=5))
  )

## Get the workflow corresponding to the ID svm.v2
getWorkflow("svm.v2",res)

## End(Not run)