TBLP

[Derek Koopowitz]

Bill,

I'm extremely well versed in TBL and TBLP.  I don't need to read the book -
been there, done that... A long time ago.  :)

What I am saying is that if you characterize TBL as rating judges then you
have to characterize high/low discard as the same thing.


-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of Bill Glaze
Sent: Monday, December 13, 2004 3:41 PM
To: discussion at nsrca.org
Subject: Re: TBLP

Well , you were the one who mentioned TBLP in the first place, (incorrectly,
in my opinion) not me.  And, I recall somewhere in the not too distant past,
you were involved in a discussion of  the possibility of using TBLP at
Muncie.  (Whether you were in favor or against, I don't
recollect.)
If you care to read the book describing TBLP, you will see that it is a far
more rigorous exercise than just a high/low discarding of scores.  
In fact, it takes up 2-1/2 pages of formulas and descriptions.
As far as throwing out the high and low judges, (as we presently do) the IAC
Rule Book says, (and I quote) "Excluding the highest and lowest judges does
not remove the second or third out-of-range or biased judges, and often does
remove judges who are the most rigorous with their scores."  Ibid P. 141
Read the book.  It's interesting.

Bill Glaze


Derek Koopowitz wrote:

>F3A uses TBL not TBLP - a subtle difference.  As an aside to this... If 
>what you wrote below is the case then in everyday Nats competition the 
>judges are being judged as well - we discard high/low scores.  What's the
difference?
>
>One other point - TBL (or TBLP) is NOT used in any AMA pattern event 
>(to my
>knowledge) so this point is moot. 
>
>-----Original Message-----
>From: discussion-request at nsrca.org 
>[mailto:discussion-request at nsrca.org] On Behalf Of Bill Glaze
>Sent: Monday, December 13, 2004 2:57 PM
>To: Discussion
>Subject: TBLP
>
>A statement was made in this discussion group,  about the TBLP system 
>not being for ranking judges, but for scoring pilots.  I believe this 
>statement to be in error.
>Either that, or I have misunderstood the meaning of the statement.
>In actuality, it (Tarasov-Bauer-Long-Penteado) is used to determine 
>which judges may or may not fall outside a "window" of scoring.  It is 
>used to identify, in any given contest, those judges who are outside 
>the "norm."  It is explicitly stated* that "In case you judges are 
>concerned this process corrupts your rankings, when the scores are 
>normalized in this manner to remove stylistic differences between 
>judges, THE RELATIVE STANDING OF EACH PILOT IS NOT AFFECTED."  
>(sic)(Caps mine)  It further states that "in world championships where 
>ten (10) judges are used, it is not uncommon to see three (3) or even 
>four (4) judges deleted from a pilot's flight scores."  I believe that 
>these statements indicate that the judges are, in fact, the ones being
judged.
>It is a fairly rigorous mathematical exercise and points out those 
>judges who may not be scoring contestants in a manner consistent with 
>good judging practices.
>This book makes very interesting reading.  Underlying it all is that 
>even with the full size aircraft, and  world class competitors, in a 
>sport many years old, the participants and executives are still even 
>now concerned with judging.  And wisely so.
>
>*International Aerobatic Club Official Contest Rules (Red Book) 
>appendix II, P. 141-147 As modified 1999
>
>Bill Glaze
>
>
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