[NSRCA-discussion] Bakersfield Bash scores are on the NSRCA website...

Tue Apr 29 06:40:02 AKDT 2014

-1

I have to disagree with normalizing to the average.  It creates a situation where a pilot(s) can get an artificially higher score that is not representative of the flight performance.  Here is an example. Round 1, a pilot or pilots have an issue causing a low score.  This low score drags the average score down and increases the normalized score of the pilots not having a problem. Now the pilot having the problem in round 1 has no more problems, this pilot has little or no chance of recovering from this low score vs the artificially high score for other pilots for the rest of the contest assuming no more issues for other pilots. This 'increased' score is not representative of the winning pilot flying better, only that his flight had no problem. 

Don

-----Original Message-----
From: Ronald Van Putte <vanputter at gmail.com>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Tue, Apr 29, 2014 7:26 am
Subject: Re: [NSRCA-discussion] Bakersfield Bash scores are on the	NSRCA	website...

+2

Ron Van Putte

On Apr 29, 2014, at 8:19 AM, ronlock at comcast.net wrote:

+1
Ron Lockhart

From: "Mark Atwood" <atwoodm at paragon-inc.com>
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Tuesday, April 29, 2014 2:01:04 AM
Subject: Re: [NSRCA-discussion] Bakersfield Bash scores are on the        NSRCA        website...

It does not normalize the rounds.  One round can be worth more than another.  Easy vs hard judges, calm vs windy conditions, etc.  Especially with throw aways it's critical that all the round have the same "value".  

That said, I can see an interest in normalizing to the average score, rather than to the top score.  It minimizes some of the variance when a key flyer doesn't fly the round either due to a problem or simply choosing not to fly after winning the first 4 rounds.  Particularly in that last scenario, it makes the remaining rounds much more valuable to the 2nd and 3rd place flyers.  

Sent from my average intelligence  phone

On Apr 28, 2014, at 8:27 PM, "Peter Vogel" <vogel.peter at gmail.com> wrote:

Well, it's normalization of a sort, in that it's a percentage of perfect within each class, so a 984 in Intermediate and a 984 in Sportsman mean the same thing, you flew 98.4% of the perfect score (no, I haven't seen a score that high! :-)  

Overall though, I don't like the dynamic of it.  It's very clear when you have a highly critical set of judges, everyone pretty much drops that round.  Normalization to best is definitely a superior way for people to see how they are doing relative to the best pilot in the round for a particular set of judges, regardless of how critical (or not) they happen to be.  An interesting experiment, but I wouldn't recommend it for future contests.

Peter+

On Mon, Apr 28, 2014 at 7:08 PM, John Gayer <jgghome at comcast.net> wrote:

It is a misnomer to call what was used normalization. It is actually a reversion to the pre-normalization scoring scheme of yesteryear. The only difference from the old days is that by "normalizing" to a perfect score, you can immediately see the average raw score per maneuver.
John

On 4/28/2014 6:15 PM, Anthony Romano wrote:

So why the change in normalization?

Anthony

Date: Mon, 28 Apr 2014 17:04:28 -0700
From: vogel.peter at gmail.com
To: nsrca-discussion at lists.nsrca.org
Subject: Re: [NSRCA-discussion] Bakersfield Bash scores are on the NSRCA website...

Final data from the contest is also available here:

http://www.patternscoring.com/560, the per-contestant report is considerably richer than what you get on nsrca.us

I also just completed an analysis of what would have happened if we'd normalized to best instead of to perfect, the only class where it would have made a difference in final placement was FAI Silver (MP15) where Jon's win in one round and 2nd place rounds were closer to Sean's scores than Dale's 2nd place rounds would have put him about 30 points over Dale.

Peter+

On Mon, Apr 28, 2014 at 11:17 AM, Peter Vogel <vogel.peter at gmail.com> wrote:

That's not the scoring program, the XML says "Prelim", "1", "2" for the flight number, but the web server's transformation is showing it as "1", "2" and "0".

Peter+

On Mon, Apr 28, 2014 at 11:07 AM, Derek Koopowitz<derekkoopowitz at gmail.com> wrote:

Everyone,

The NSRCA website is back up and running again... our host was doing some maintenance on the server.  The scores for the Bakersfield contest have been posted and just to let everyone know...

1.  Every score is normalized to PERFECT, not to best pilot
2.  Every AMA class flew 2 final rounds on Sunday using unknowns
3.  Best 3 of 4 prelim rounds were AVERAGED to produce a SINGLE round score to carry over into the finals.
4.  Best 2 of 3 (prelim carry over + 2 final rounds = 3) count for the final score.

In FAI F, Prelim carry over is shown as Round 1, Round 2 is first finals round, and round 3 is the 2nd final round -- for some reason the scoring program is showing that as round 0.

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Director, Fixed Wing Flight Training
Santa Clara County Model Aircraft Skypark

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Director, Fixed Wing Flight Training
Santa Clara County Model Aircraft Skypark

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Santa Clara County Model Aircraft Skypark

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