[blml] Fwd: Decimal HCP ranges.

[Jean-Pierre Rocafort]

John Probst a écrit :
> ----- Original Message ----- 
> From: "Nigel" <Guthrie at NTLworld.com>
> To: "BLML" <blml at rtflb.org>
> Sent: Wednesday, July 04, 2007 2:00 PM
> Subject: Re: [blml] Fwd: Decimal HCP ranges.
> 
> 
>> [Jean-Pierre Rocafort]
>> i don't see your "convention" as logical, nor convenient, nor
>> intuitive. as a simple soul, i would understand 18.0 to correspond to
>> the most "normal" 18 hcp hands. the worst 18 hcp would be worth less
>> than 18.0 say 17.5 for the purpose of the normalisation to 1-range,
>> and the best 18.5
>>
>> [nige1]
>> Then you prefer Tim and John's variation :)
> 
> Well, I do :) even for non-walruses 12-14 means just that.; so 11.8-14 means 
> "a few more hands" and 12-13.8 means a few fewer hands. Surely the walrus 
> can count in a straight line.?  I agree there's a difference between 12 and 
> 12.0 in the context 12-14. The first is walrus, the 2nd judgement.

unfortunately, i am afraid there is more of a difference.

the "classical" notation 12-14, for a walrus needs the set of 3 integer 
numbers (12, 13, 14) in which 12 shows a hand of precisely 12 hcp

the same notation means about the same thing for a non-walrus: the set 
of 3 numbers (12, 13, 14) in which 12 shows a hand the value of which 
approximates a mean hand of 12 hcp, maybe it is a hand of 12 hcp, maybe 
a weak 13 hcp hand which looks more like 12 than 13, maybe a strong 11 
hcp hand...

when using the continuous notation (with real numbers or decimal numbers 
as you see fit) 12.0-14.0 means the interval [12,14] that is to say the 
set of all numbers greater than 12 and lower than 14.

unfortunately if you want to make a correspondance between both 
notations, you must use different numbers: the equivalent of the set of 
3 numbers 12-14, is the interval 11.5-14.5. in order to avoid confusion 
the first thing to do if wanting to use a continuous scale, would be to 
use the correct notation [11.5, 14.5] with brackets instead of the 
ambiguous 11.5-14.5

jpr

  The
> latter meaning we discard some 12's and add a similar number of 11's. The 
> walrus method suffers from trying to make each number work alone, I think; 
> In decimal notation we use the context of the two numbers.
> 
> cheers john
>> _______________________________________________
>> blml mailing list
>> blml at amsterdamned.org
>> http://www.amsterdamned.org/mailman/listinfo/blml 
> 
> 
> 
> _______________________________________________
> blml mailing list
> blml at amsterdamned.org
> http://www.amsterdamned.org/mailman/listinfo/blml
> 


-- 
_______________________________________________
Jean-Pierre Rocafort
METEO-FRANCE
DSI/CM
42 Avenue Gaspard Coriolis
31057 Toulouse CEDEX
Tph: 05 61 07 81 02      (33 5 61 07 81 02)
Fax: 05 61 07 81 09      (33 5 61 07 81 09)
e-mail: jean-pierre.rocafort at meteo.fr

Serveur WWW METEO-France: http://www.meteo.fr
_______________________________________________