(29-01-2026, 08:10 PM)Jorge_Stolfi wrote: You are not allowed to view links. Register or Login to view.I suppose a lot of the LAAFU research and discussion has happened during the 20 years I have been hibernating, so I am not sure I know what those features are, exactly.
I understand that the plot of the frequency of X as a function of the position along the line has bumps and dips near the beginning of the line and near the end of the line, for various choices of X. Is that all?
I don't think it's only bumps and dips, often there is some gradual change in the frequency of X as the function of the position.
I think one good summary is this article by Patrick Feaster: You are not allowed to view links. Register or Login to view.
I remember studying these a few years ago, but I couldn't find any good explanation, other than the generic thought that for a one-to-many cipher this could be something natural. Say, if T could be encoded as ok qok or qoke, the encoder would use the shorter ok near the beginning of a line and then to avoid repeating same patterns would switch to qok/qoke later in the line.


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