Processing Form and Statistics

Selecting the processing form, you choose in which form selected datasets shall be processed.

The terms “encoding“ and “decoding“ just go without saying (although these operations can be used in transposed form !). But it’s of safety interest what it is about the term “as one unit”.

First datasets encoded as single datasets can be decoded separate, i.e. not depending on other datasets. If you encode datasets as one unit, exactly these datasets have to be decoded in same sequence to get the original contents. It’s not possible to decode such datasets separate (!).

The benefit of encoding datasets as one unit is that the key parameters internally used by the program aren’t put back to the initial condition for every dataset. Rather all involved datasets are processed as one big dataset i.e. data blocks may be processed in a file-crossing way, so unauthorized persons have much more difficulties by making an attempt to decode such datasets.

Processing a directory first the datasets of the directory are processed in alphabetic order. Second the subdirectories of a directory are processed if required. These subdirectories are processed in alphabetic order too if all datasets should be processed as one unit. Otherwise the sequence of these subdirectories in internal tables of the operating system determines the sequence of the processing (for reasons of simplification).

As disadvantage remains that directories encoded as one unit may n o t be modified or have to transferred exactly in original condition before starting the decoding process. So the coding algorithm only works on the contents of each dataset, it doesn’t change any directory or similar information.

Selecting the corresponding checkbox, you can get summarized statistics about the coding result at the end of a program task. Such statistics show you the quality of the definite coding result on encoding, it’s uninterested by looking at the process of coding itself.

If you request a set of statistics of all datasets, these results are written at the end of the coding process (e.g.):

CODING1:

contents of +--------- character-frequencies in %: --------+ % binary zero

statistics: min.: max.: mean: variance: ones: groups:

-------------------------------------------------------------------------------

all datasets: 0.38749079 0.39417626 (0.39062500) 0.00130741 49.99381021 0

CODING2:

contents of +-- character(1.)groups(2.)-frequencies in %:--+ (1.)% binary 1s:

statistics: min.: max.: mean: variance: (2.)zero groups:

-------------------------------------------------------------------------------

all datasets: 0.39037671 0.39089028 (0.39062500) 0.00008012 50.00027814

0.00149388 0.00155866 (0.00152588) 0.00000737 0

CODING3:

contents of +-- character(1.)groups(2.)-frequencies in %:--+ (1.)% binary 1s:

statistics: min.: max.: mean: variance: (2.)zero groups:

-------------------------------------------------------------------------------

all datasets: 0.39020319 0.39104500 (0.39062500) 0.00016387 49.99959427

0.00000057 0.00001402 (0.00000596) 0.00000131 0