Summary method for objects from class pram

Summary method for objects from class ‘pram’ to provide information about transitions.

# S3 method for class 'pram'
summary(object, ...)

Arguments

object

object from class ‘pram’

...

Additional arguments passed through.

Value

The summary of object from class ‘pram’.

Details

Shows various information about the transitions.

References

Templ, M. Statistical Disclosure Control for Microdata Using the R-Package sdcMicro, Transactions on Data Privacy, vol. 1, number 2, pp. 67-85, 2008. http://www.tdp.cat/issues/abs.a004a08.php

See also

pram

Author

Matthias Templ and Bernhard Meindl

Examples

data(free1)
x <- as.factor(free1[,"MARSTAT"])
x2 <- pram(x)
x2
#> Number of changed observations: 
#> - - - - - - - - - - - 
#> x != x_pram : 264 (6.6%)
summary(x2)
#> Variable: x
#> 
#>  ----------------------
#> 
#> Frequencies in original and perturbed data:
#>                                 x      1      2      3      4     NA
#>                            <char> <char> <char> <char> <char> <char>
#> 1:           Original Frequencies   2547    162    171   1120      0
#> 2: Frequencies after Perturbation   2557    167    165   1111      0
#> 
#> Transitions:
#>     transition Frequency
#>         <char>     <int>
#>  1:    1 --> 1      2471
#>  2:    1 --> 2         8
#>  3:    1 --> 3         8
#>  4:    1 --> 4        60
#>  5:    2 --> 1        12
#>  6:    2 --> 2       130
#>  7:    2 --> 3         1
#>  8:    2 --> 4        19
#>  9:    3 --> 1        15
#> 10:    3 --> 2         3
#> 11:    3 --> 3       128
#> 12:    3 --> 4        25
#> 13:    4 --> 1        59
#> 14:    4 --> 2        26
#> 15:    4 --> 3        28
#> 16:    4 --> 4      1007
#>