Synthetic data set of two variables forming two clusters
A synthetic data set described by Yang & Wu (2006). It consists of two continous variables forming two well-separated clusters in addition to two noise points.
data(x16)
A data frame with 16 rows and 2 numeric variables:
a numeric variable ranging from 50 to 150
a numeric variable ranging from 145 to 200
a numeric variable ranging from 1 to 4
The data set x16 is recommended to test the performances of the possibilistic and noise clustering algorithms.
Yang, M. S. & Wu, K. L. (2006). Unsupervised possibilistic clustering. Pattern Recognition, 39(1): 5-21. <doi:10.1016/j.patcog.2005.07.005>
data(x16) x <- x16[,-3] # descriptive statistics of the variables summary(x) # scatter plots for the variable pairs pairs(x, col=x16$cl, pch=20, cex=2)
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