R: Test Functional DD-Classifier

ddalphaf.getErrorRateCV {ddalpha} | R Documentation

## Test Functional DD-Classifier

### Description

Performs a cross-validation procedure over the given data. On each step every `numchunks` observation is removed from the data, the functional DD-classifier is trained on these data and tested on the removed observations.

### Usage

    ddalphaf.getErrorRateCV (dataf, labels, numchunks = 10, disc.type = c("LS", "comp"),  ...)

### Arguments

`dataf` | list containing lists (functions) of two vectors of equal length, named "args" and "vals": arguments sorted in ascending order and corresponding them values respectively
`labels` | list of output labels of the functional observations
`numchunks` | number of subsets of testing data. Equals to the number of times the classifier is trained.
`disc.type` | type of the used discretization scheme. "LS" for `ddalphaf.train`, "comp" for for `compclassf.train`
`...` | additional parameters passed to `ddalphaf.train`

### Value

`errors` | the part of incorrectly classified data
`time` | the mean training time
`time_sd` | the standard deviation of training time

### See Also

`ddalphaf.train` to train the functional DDα-classifier, `ddalphaf.classify` for classification using functional DDα-classifier, `ddalphaf.test` to test the functional DD-classifier on particular learning and testing data, `ddalphaf.getErrorRatePart` to perform a benchmark study of the functional DD-classifier on particular data.

### Examples

    # load the fdata
    df = dataf.growth()

    stat <- ddalphaf.getErrorRateCV(dataf = df$dataf, labels = df$labels,
                                    numchunks = 5,
                                    adc.args = list(instance = "avr",
                                                    numFcn = 2,
                                                    numDer = 2))

    cat("Classification error rate: ", stat$errors, ".\n", sep = "")

[Package ddalpha version 1.3.11 Index]