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Maximum difference between elements of correlation matrices 0.10000000
Partial mask: First column not to be masked --
Statistics for continuous variables:
• Mean and Standard Deviation for original and transformed variables,
• Correlations, Differences between original and transformed variables
continouus variables
descriptive statistics
means and standarddeviations
mean
stdc
564240.00000000 252139.95175406
54438.44000000 25999.13278896
correlations
transformed data
1.00000000 -0.03924644
-0.03924644 1.00000000
original data
1.00000000 -0.03730867
-0.03730867 1.00000000
difference in correlations 0.00000000 -0.00193777
-0.00193777 0.00000000
Statistics for discrete variables:
• Mean and Standard Deviation for original and transformed variables,
• Correlations, Differences between original and transformed variables
binary variables
deskriptive statistics
means and standard deviations
mean
stdc
0.492 0.500
correlations
transformed data
1.00000000
original data
1.00000000
Difference in correlations 2.2204460e-016
Record id-numbers for those records where the criterion for sufficiency of the masking is not satisfied.
in 32.0 cases the internal distance criterion is not fulfilled
case numbers
29.0 55.0 57.0 78.0 119. 121. 155. 162. 168. 178. 192. 216. 253. 265. 270.
273. 276. 293. 301. 343. 377. 380. 384. 386. 388. 394. 397. 429. 433. 453.
479. 494.
Because the sufficiency criterion is not always satisfied in this instance, the masking is
repeated for part of the data set, that is, the noise is “generated completely new” for 31 records...,
in 31.0 cases errors will be generated completly new:
29.0 55.0 57.0 78.0 119. 121. 155. 162. 168. 178. 192. 216. 265. 270. 273.
276. 293. 301. 343. 377. 380. 384. 386. 388. 394. 397. 429. 433. 453. 479.
494.
iteration of mask 2.0
..., but still, the sufficiency criterion is not satisfied for 30 records,...
in 30.0 cases the internal distance criterion is not fulfilled
case numbers
55.0 57.0 78.0 119. 121. 155. 162. 168. 178. 192. 216. 265. 270. 273. 276.
293. 301. 343. 377. 380. 384. 386. 388. 394. 397. 429. 433. 453. 479. 494.
..., and the noise is “generated completely new”...,
in 30.0 cases errors will be generated completly new:
55.0 57.0 78.0 119. 121. 155. 162. 168. 178. 192. 216. 265. 270. 273. 276.
293. 301. 343. 377. 380. 384. 386. 388. 394. 397. 429. 433. 453. 479. 494.
iteration of mask 3.0
.... Although this procedure has still left some records without sufficient protection according to the
distance criterion, the algorithm stops here, because the number of iterations is limited to three.
According to the internal distance criterion the cases listed above9 are not sufficiently masked
µ-ARGUS (3.2) user’s manual
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