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Nacbracs

Posted By: Matt Ryder
Date: Friday, 25 December 2009, at 8:29 a.m.

In Response To: Nacbracs (Nack Ballard)

Thanks for the incredibly detailed explanation Nack! It unpacks some of the puzzling terminology in recent posts by the experts.

This stuff is absolute gold to me. I'm on the lookout for ways to record equities in shorthand, particularly as I'm fooling around with writing a program to help record, revisit, study and search reference positions (see a vague description of my grand design here).

I'm a big fan of your error scale. Given the degree of variance between bots etc., I personally find it useful to think in terms of approximate ranges rather than get lost in a forest of numbers. Have you considered possibly incorporating the error scale as an option in your ingenious Nacbrac methodology?

Two approaches occur to me:

Abbreviations

Tied: 0.00 – 0.01
Barely wrong or Very close: 0.01 – 0.02
Marginally wrong or Close: 0.02 – 0.03
Wrong, or Mistake: 0.03 - 0.06
Blunder: 0.06 - 0.10
Whopper: 0.10 - 0.20
Double whopper: >0.20

Using this approach your example,

51S-21 [$ U3 D28 S34] 46k 5kDS

might read

51S-21 [$T UT DC SM] 46k 5kDS

However, this mishmash of letters could get confusing, so maybe simply using the numbers 0 through 6 to represent the severity of the error might work better?

Ordinals

0.Tied: 0.00 – 0.01
1.Barely wrong or Very close: 0.01 – 0.02
2.Marginally wrong or Close: 0.02 – 0.03
3.Wrong, or Mistake: 0.03 - 0.06
4.Blunder: 0.06 - 0.10
5.Whopper: 0.10 - 0.20
6.Double whopper: >0.20

In this case, your example

51S-21 [$ U3 D28 S34] 46k 5kDS

would read:

51S-21 [$0 U0 D2 S3] 46k 5kDS

I think this might work well. It should be clear from the context whether the numbers represent the ordinals of the error scale or thousandths of a point.

Taking one of your lengthier examples,

53P-43 [D Z5 U22 S22, dZ D1 S6 U6, sS D3 Z16 U42, gD Z20] 46k 5kUS, d10k 5kSU, s5k, g5k.

Using the ordinal scale, we'd write it:

53P-43 [D0 Z0 U2 S2, dZ0 D0 S0 U0, sS0 D0 Z1 U3, gD0 Z2] 46k 5kUS, d10k 5kSU, s5k, g5k.

What do you think?

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