High Point Scoring

Imported from Yahoo
1

I'm interested in using Cox-Sprague scoring system for our clubs BOTY.
I have downloaded 9.2 and see Rinderle B system. However I feel it may
not fairly score boats who place low in small fleet compared the who
place marginally better in larger fleets.
So, how/or can do I add the formula in the custom high point formula
field.
Thanks

2

The
difficulty you mention of not scoring boats fairly is solved by the CHIPS
system. You can find the details
on the Chipstead SC website - http://www.chipsteadsc.org.uk/

CHIPS
behaves similarly to Rinderle B but was specifically designed to score boats
fairly throughout the fleet, not just at the top.

This
system has been trialled extensively at Chipstead over the past year, following
which I have made some adjustments to the constants that are used in the formula
to “flatten” the curves a bit more.
I have homed in on the following constants which appear to be optimum:

B = 1.713

C = 0.163

D = 10

K = 1

F = 5.5273

In
addition I have improved the score for a retirement to be equivalent to “last
plus one” place, using the same formula.

If it
would be helpful I can update these details in the SUG Files area, showing the
formula, curves & table of values.

I am not
sure what is Colin’s latest position on including the CHIPS formula in
Sailwave.

Regards

Geoff

···

-----Original Message-----
From: sailwave@yahoogroups.com
[mailto:sailwave@yahoogroups.com]On Behalf Ofstevesails838
Sent: 03 February 2006 17:59
To: sailwave@yahoogroups.com
Subject: [sailwave] High Point
Scoring

I'm interested in using Cox-Sprague scoring system for our clubs BOTY.

I have downloaded 9.2 and see Rinderle B system. However I feel it may

not fairly score boats who place low in small fleet compared the who

place marginally better in larger fleets.

So, how/or can do I add the formula in the custom high point formula

field.

Thanks

3

Hi Steve,

Cox-Sprague is not there yet, it will be at some time but unfortunately I
cannot say when...

Regards,
Colin
www.sailwave.com

···

-----Original Message-----
From: sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On
Behalf Of stevesails838
Sent: 03 February 2006 17:59
To: sailwave@yahoogroups.com
Subject: [sailwave] High Point Scoring

I'm interested in using Cox-Sprague scoring system for our clubs BOTY.
I have downloaded 9.2 and see Rinderle B system. However I feel it may
not fairly score boats who place low in small fleet compared the who
place marginally better in larger fleets.
So, how/or can do I add the formula in the custom high point formula
field.
Thanks

-!- http://www.yachtsandyachting.com/ -!- http://www.sailing.org/ -!-
http://www.sailwave.com/ -!-

Latest versions of sailwave can be downloaded from the 'files' section at
http://groups.yahoo.com/group/sailwave/

On-Line Sailwave help...
http://sailwave.com/help/HTML/

Convert to daily digest of emails send blank email to:
sailwave-digest@yahoogroups.com
Yahoo! Groups Links

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4

Hi Colin

Don’t
forget your intention to include (at some time) CHIPS high point scoring which is
based upon similar principles to Rinderle B but with the advantage of overcoming
precisely the problem mentioned by Steve.

Regards

Geoff

···

-----Original Message-----
From: sailwave@yahoogroups.com
[mailto:sailwave@yahoogroups.com]On Behalf OfColin Jenkins
Sent: 15 May 2006 10:16
To: sailwave@yahoogroups.com
Subject: RE: [sailwave] High Point
Scoring

Hi Steve,

Cox-Sprague is not there yet, it will be at some time but unfortunately I

cannot say when…

Regards,

Colin

www.sailwave.com

-----Original Message-----

From: sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On

Behalf Of stevesails838

Sent: 03 February 2006 17:59

To: sailwave@yahoogroups.com

Subject: [sailwave] High Point Scoring

I’m interested in using Cox-Sprague scoring system for our clubs BOTY.

I have downloaded 9.2 and see Rinderle B system. However I feel it may

not fairly score boats who place low in small fleet compared the who

place marginally better in larger fleets.

So, how/or can do I add the formula in the custom high point formula

field.

Thanks

-!- http://www.yachtsandyachting.com/
-!- http://www.sailing.org/ -!-

http://www.sailwave.com/ -!-

Latest versions of sailwave can be downloaded from the ‘files’ section at

http://groups.yahoo.com/group/sailwave/

On-Line Sailwave help…

http://sailwave.com/help/HTML/

Convert to daily digest of emails send blank email to:

sailwave-digest@yahoogroups.com

Yahoo! Groups Links

–

No virus found in this incoming message.

Checked by AVG Free Edition.

Version: 7.1.375 / Virus Database: 267.15.1/250 - Release Date: 03/02/2006

–

No virus found in this outgoing message.

Checked by AVG Free Edition.

Version: 7.1.392 / Virus Database: 268.5.6/339 - Release Date: 14/05/2006

5

:slight_smile:

I remembered as I wrote the message...

Regards,
Colin
www.sailwave.com

···

-----Original Message-----
From: sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On Behalf Of
Geoff Burrell
Sent: 15 May 2006 10:39
To: sailwave@yahoogroups.com
Subject: RE: [sailwave] High Point Scoring

Hi Colin
Don�t forget your intention to include (at some time) CHIPS high point
scoring which is based upon similar principles to Rinderle B but with the
advantage of overcoming precisely the problem mentioned by Steve.
Regards
Geoff

-----Original Message-----
From: sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On Behalf Of
Colin Jenkins
Sent: 15 May 2006 10:16
To: sailwave@yahoogroups.com
Subject: RE: [sailwave] High Point Scoring

Hi Steve,

Cox-Sprague is not there yet, it will be at some time but unfortunately I
cannot say when...

Regards,
Colin
www.sailwave.com

-----Original Message-----
From: sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On
Behalf Of stevesails838
Sent: 03 February 2006 17:59
To: sailwave@yahoogroups.com
Subject: [sailwave] High Point Scoring

I'm interested in using Cox-Sprague scoring system for our clubs BOTY.
I have downloaded 9.2 and see Rinderle B system. However I feel it may
not fairly score boats who place low in small fleet compared the who
place marginally better in larger fleets.
So, how/or can do I add the formula in the custom high point formula
field.
Thanks

-!- http://www.yachtsandyachting.com/ -!- http://www.sailing.org/ -!-
http://www.sailwave.com/ -!-

Latest versions of sailwave can be downloaded from the 'files' section at
http://groups.yahoo.com/group/sailwave/

On-Line Sailwave help...
http://sailwave.com/help/HTML/

Convert to daily digest of emails send blank email to:
sailwave-digest@yahoogroups.com
Yahoo! Groups Links

--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.1/250 - Release Date: 03/02/2006

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.392 / Virus Database: 268.5.6/339 - Release Date: 14/05/2006

-!- http://www.yachtsandyachting.com/ -!- http://www.sailing.org/ -!-
http://www.sailwave.com/ -!-

Latest versions of sailwave can be downloaded from the 'files' section at
http://groups.yahoo.com/group/sailwave/

On-Line Sailwave help...
http://sailwave.com/help/HTML/

Convert to daily digest of emails send blank email to:
sailwave-digest@yahoogroups.com

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6

Hi Geoff

I dont understand one part of the formula:-

1 - exp - C*(N-1)

should that be

1 - exp(-C*(N-1))

?

CJ

···

-----Original Message-----
From: sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On Behalf Of Geoff Burrell
Sent: 11 February 2006 10:03
To:
sailwave@yahoogroups.com
Subject: RE: [sailwave] High Point Scoring

The difficulty you mention of not scoring boats fairly is solved by the CHIPS system. You can find the details on the Chipstead SC website - http://www.chipsteadsc.org.uk/

CHIPS behaves similarly to Rinderle B but was specifically designed to score boats fairly throughout the fleet, not just at the top.

This system has been trialled extensively at Chipstead over the past year, following which I have made some adjustments to the constants that are used in the formula to “flatten” the curves a bit more. I have homed in on the following constants which appear to be optimum:

B = 1.713

C = 0.163

D = 10

K = 1

F = 5.5273

In addition I have improved the score for a retirement to be equivalent to “last plus one” place, using the same formula.

If it would be helpful I can update these details in the SUG Files area, showing the formula, curves & table of values.

I am not sure what is Colin’s latest position on including the CHIPS formula in Sailwave.

Regards

Geoff

-----Original Message-----
From:
sailwave@yahoogroups.com [mailto:sailwave@yahoogroups.com]On Behalf Of stevesails838
Sent: 03 February 2006 17:59
To: sailwave@yahoogroups.com
Subject: [sailwave] High Point Scoring

I'm interested in using Cox-Sprague scoring system for our clubs BOTY.
I have downloaded 9.2 and see Rinderle B system. However I feel it may
not fairly score boats who place low in small fleet compared the who
place marginally better in larger fleets.
So, how/or can do I add the formula in the custom high point formula
field.
Thanks

7

Hi Colin

Yes, in effect the –C*(N-1) is in brackets – i.e. this is the exponent.

I am sure you realise this but just in case - When implementing the
formula remember to ensure you don’t leave a residual “divide by zero” which would
occur if the number of starters were N = 1. The method I have used to remove that possibility can be
seen in the spreadsheet (cell C5) in the CHIPS Scores.xls file in the SUG Files
area. The spreadsheet might be
useful for checking that your formula implementation gives the correct results.

The full document that describes the system is “Definition of CHIPS2”
also in the Files area. (Both
files dated 24 Mar 06)

If you have any further uncertainties then of course do ask.

Cheers

Geoff

···

-----Original Message-----
From: sailwave@yahoogroups.com
[mailto:sailwave@yahoogroups.com]On Behalf OfColin Jenkins
Sent: 24 May 2006 15:06
To: sailwave@yahoogroups.com
Subject: RE: [sailwave] High Point
Scoring

Hi Geoff

I dont understand one part of the
formula:-

1 - exp - C*(N-1)

should that be

1 - exp(-C*(N-1))

?

CJ

-----Original
Message-----
From: sailwave@yahoogroups.com
[mailto:sailwave@yahoogroups.com]On Behalf OfGeoff Burrell
Sent: 11 February 2006 10:03
To: sailwave@yahoogroups.com
Subject: RE: [sailwave] High Point
Scoring

The difficulty you mention of not scoring boats
fairly is solved by the CHIPS system.
You can find the details on the Chipstead SC website - http://www.chipsteadsc.org.uk/

CHIPS behaves similarly to Rinderle B but was
specifically designed to score boats fairly throughout the fleet, not just at
the top.

This system has been trialled extensively at
Chipstead over the past year, following which I have made some adjustments to
the constants that are used in the formula to “flatten” the curves a bit
more. I have homed in on the
following constants which appear to be optimum:

B = 1.713

C = 0.163

D = 10

K = 1

F = 5.5273

In addition I have improved the score for a
retirement to be equivalent to “last plus one” place, using the same formula.

If it would be helpful I can update these details in
the SUG Files area, showing the formula, curves & table of values.

I am not sure what is Colin’s latest position on
including the CHIPS formula in Sailwave.

Regards

Geoff

-----Original
Message-----
From: sailwave@yahoogroups.com
[mailto:sailwave@yahoogroups.com]On Behalf Ofstevesails838
Sent: 03 February 2006 17:59
To: sailwave@yahoogroups.com
Subject: [sailwave] High Point
Scoring

I'm interested in using Cox-Sprague scoring system for our clubs BOTY.

I have downloaded 9.2 and see Rinderle B system. However I feel it may

not fairly score boats who place low in small fleet compared the who

place marginally better in larger fleets.

So, how/or can do I add the formula in the custom high point formula

field.

Thanks