computeSimilarityVar {RMixtCompUtilities}

Similarity

Description

Compute the similarity between variables (or classes)

Usage

computeSimilarityVar(outMixtComp)

computeSimilarityClass(outMixtComp)

Arguments

outMixtComp

object of class MixtCompLearn or MixtComp obtained using mixtCompLearn or mixtCompPredict functions from RMixtComp package or rmcMultiRun from RMixtCompIO package.

Details

The similarities between variables j and h is defined by Delta(j,h)

Delta(j,h)^2 = 1 - \sqrt{(1/n) * \sum_{i=1}^n \sum_{k=1}^K (P(Z_i=k|x_{ij}) - P(Z_i=k|x_{ih}))^2}

The similarities between classes k and g is defined by 1 - Sigma(k,g)

Sigma(k,g)^2 = (1/n) * \sum_{i=1}^n (P(Z_i=k|x_i) - P(Z_i=g|x_i))^2

Value

a similarity matrix

Author(s)

Quentin Grimonprez

See Also

heatmapVar heatmapClass

Examples

if (requireNamespace("RMixtCompIO", quietly = TRUE)) {
  dataLearn <- list(
    var1 = as.character(c(rnorm(50, -2, 0.8), rnorm(50, 2, 0.8))),
    var2 = as.character(c(rnorm(50, 2), rpois(50, 8)))
  )

  model <- list(
    var1 = list(type = "Gaussian", paramStr = ""),
    var2 = list(type = "Poisson", paramStr = "")
  )

  algo <- list(
    nClass = 2,
    nInd = 100,
    nbBurnInIter = 100,
    nbIter = 100,
    nbGibbsBurnInIter = 100,
    nbGibbsIter = 100,
    nInitPerClass = 3,
    nSemTry = 20,
    confidenceLevel = 0.95,
    ratioStableCriterion = 0.95,
    nStableCriterion = 10,
    mode = "learn"
  )

  resLearn <-RMixtCompIO::rmcMultiRun(algo, dataLearn, model, nRun = 3)

  simVar <- computeSimilarityVar(resLearn)
  simClass <- computeSimilarityClass(resLearn)
}