class SBC extends AnyRef
Undersampling Based on Clustering. Original paper: "Under-Sampling Approaches for Improving Prediction of the Minority Class in an Imbalanced Dataset" by Show-Jane Yen and Yue-Shi Lee.
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SBC(data: Data, seed: Long = System.currentTimeMillis(), method: String = "NearMiss1", m: Double = 1.0, k: Int = 3, numClusters: Int = 50, restarts: Int = 1, minDispersion: Double = 0.0001, maxIterations: Int = 200, dist: Distance = Distance.EUCLIDEAN, normalize: Boolean = false, randomData: Boolean = false, verbose: Boolean = false)
- data
data to work with
- seed
seed to use. If it is not provided, it will use the system time
- method
selection method to apply. Possible options: random, NearMiss1, NearMiss2, NearMiss3, MostDistant and MostFar
- m
ratio used in the SSize calculation
- k
number of neighbours to use when computing k-NN rule (normally 3 neighbours)
- numClusters
number of clusters to be created by KMeans core
- restarts
number of times to relaunch KMeans core
- minDispersion
stop KMeans core if dispersion is lower than this value
- maxIterations
number of iterations to be done in KMeans core
- dist
object of Distance enumeration representing the distance to be used
- normalize
normalize the data or not
- randomData
iterate through the data randomly or not
- verbose
choose to display information about the execution or not
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def
compute(): Data
Compute the SBC algorithm.
Compute the SBC algorithm.
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undersampled data structure
- val dist: Distance
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