...

The maximum number of the unique levels of a categorical variable that are allowed to be returned to the client. If nfilter.levels is set to 0.33 (its default value), and if a categorical variable (i.e. factor) has X distinct categories then if X is greater than the 33% of the variable's length then the categories (i.e. levels) are not returned to the client. This disclosure filter protects against the disclosure of all the unique values in a numerical variable when it is converted to a factor variable. This option has been deprecated.

nfilter.levels.density

???? 

nfilter.levels.max

????

nfilter.noise

The minimum level of noise that can be added to a server-side vector. The "noisy" vector can then be returned to the client. This value specifies the variance of the added noise. If nfilter.noise is set to 0.25 (its default value) then noise following a distribution (usually Gaussian) with zero mean and variance equal to the 25% of the true variance of the vector of interest is added to each individual value of that vector.

datashield.privacyControlLevel

Permit server administrators to run servers with a predefined subset of the standard methods available. If the value of this option is not the string "permissive", the following server side methods will be blocked form use: dataFrameSubsetDS1, levelsDS, cDS, cbindDS, dataFrameDS, dataFrameSortDS, dataFrameSubsetDS2, dmtC2SDS, rbindDS, recodeLevelsDS, recodeValuesDS, repDS, reShapeDS, seqDS, subsetByClassDS and subsetDS. Default value is "permissive". The option was introduced in version DataSHIELD 6.2.

datashield.privacyLevel

This is the old filter that is used in DataSHIELD v4. This will be option has been deprecated, and has been replaced by the previous eight filters when we will merge the existing and the BetaTest functions in one main packagenine filters described above.