Control options for clipped scree estimation

Creates a control list for the clipped-mean scree estimator used by dp_scree() and dp_scree_plot() when method = "clipped".

Usage

clipped_control(C_clip)

Arguments

C_clip

Positive clipping threshold for squared principal component scores. This value has no default because it should be chosen according to the scale of the data.

Value

A list of control options for method = "clipped".

Details

The clipped method estimates each scree value by clipping the squared scores at C_clip and then applying a sensitivity-calibrated Gaussian mechanism (Dwork and Roth 2014) . Larger values of C_clip reduce clipping bias but increase the sensitivity, and therefore the scale of the privacy noise.

References

Dwork C, Roth A (2014). “The Algorithmic Foundations of Differential Privacy.” Found. Trends Theor. Comput. Sci., 9(3–4), 211–407. ISSN 1551-305X, doi:10.1561/0400000042 .

See also

dp_scree() for using clipped scree estimation. dp_scree_plot() for plotting private scree estimates.

Examples

clipped_control(C_clip = 3)
#> $C_clip
#> [1] 3
#>