What I have to do is to refine some tables and charts, and translate some pages to English.

I could have contact with Mr. Sean Luke:
who once had shown the algorithm and result of digraph-statistics on some Brown corpus. I'd used that, and till now it has not been available. I've known this is because the code is just for a class while 2009 Sean had.
Now he showed me the Lisp code and the Brown corpus text he treated. So I can study and trace what he did by the code on the corpus. Thanks a lot! May God bless you!
the Brown corpus

What had been happened on upstrike typewriters inside typebasket before QWERTY?

Until QWERTY layout had been stable almost in 1882, and later on until early 20th, the upstrike typewriters are the main stream of those.

keywords: type bar, up-strike, front-strike, type-basket, letter sequence on type-basket,

type bar
transformation from up-strike to front-strike
ETCetra No.42/March, 1998
letter sequence on type-basket

How I used the digraph-statistics

For example, "er" and "re" are accumulated in one and represented by "er"
    2014-03-15 7:02 GMT+09:00 Sean Luke < (at)cs.gmu.edu> wrote:
    *skip the above*
    ... to generate the following statistics (digraphs not appearing in this list have a value of 0):
      th 134548
      he 123194
      in 89449
      er 76135
      an 73072
      re 67309
      on 61668
      *skip the rest*

The frequency the adjacent type-bars move sequentially while a Brown-corpus-text had been typed out.

If the letters of the type-bar are put sequentialy around the type-basket and if like ...VWXYZ23456789ABCD... then



adjacent typebars' letter pairs frequency

Plots of the frequency the adjacent typebar's sequential motion along time and innovation goes by,


among many of scattered key layouts ( among many of over sixty thousands of Monte Carlo trials )


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