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*To*: vms-list@xxxxxxxxxxx*Subject*: VMs: Perhaps a quick test?, was truncated repeating sequences*From*: elvogt@xxxxxxxxxxx*Date*: 9 Sep 2004 14:06:45 +0200*Date*: Thu, 9 Sep 2004 14:06:45 +0200*In-reply-to*: <JAEKJOMCOCMKCPMKKHGMGEGJCKAA.markefincher@travelinfosystems.com>*References*: <JAEKJOMCOCMKCPMKKHGMGEGJCKAA.markefincher@travelinfosystems.com>*Reply-to*: vms-list@xxxxxxxxxxx*Sender*: owner-vms-list@xxxxxxxxxxx*User-agent*: Internet Messaging Program (IMP) 3.1

Zitat von Marke Fincher <markefincher@xxxxxxxxxxxxxxxxxxxxx>: > > > Also, the truncated sequences seem to appear with widely differing > frequencies. > > Shouldn't they be more equally distributed .... > > Well, the longer subsequences are fairly well balanced. The shorter ones > may > have higher frequencies because they can be produced from more than one > "master" sequence. > > Marke > > So, if I understand correctly the assumption is that there is a "simplistic" cardan grille with only one rectangular window, x characters wide, y characters high. Underneath the window there is a "code table" of n columns, m rows which is filled with more or less random characters -- the "master sequences". The window is placed (randomly) somewhere on the code table, and then all x * y characters visible are copied onto the VM. (I'll call this a "batch".) Then, the window is shifted to another arbitrary position, and the copying is repeated. Is that correct? Now let's assume the window is shifted a single column between batches. That would create a batch with y sequences, each (x-2) characters long, which are identical to the previous batch, and 2 different characters each between. Furthermore, if the window is shifted up or down a single row, then we would assume to find identical strings of x * (y-2) length. A shift of two rows would yield x * (y-4) length identical strings etc. So, perhaps a quick run over the text, searching for very long identical strings, could substantiate the hypothesis, and give us first hints for x and y, which would make further statistical research easier. Could you run such a beast, Marke? Just a thought, Elmar ------------------------------------------------- debitel.net Webmail ______________________________________________________________________ To unsubscribe, send mail to majordomo@xxxxxxxxxxx with a body saying: unsubscribe vms-list

**Follow-Ups**:**VMs: RE: Perhaps a quick test?, was truncated repeating sequences***From:*Marke Fincher

**References**:**RE: VMs: truncated repeating sequences***From:*Marke Fincher

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