|
Google Site Search | Get RDSS | Sartin Library | RDSS FAQs | Conduct | Register | Site FAQ | Members List | Search | Today's Posts | Mark Forums Read
General Discussion General Horse Racing Discussion |
|
Thread Tools | Display Modes |
10-31-2021, 09:49 PM | #81 |
Grade 1
Join Date: Mar 2010
Posts: 3,489
|
If I might ask, what does "CSR" stand for?
|
10-31-2021, 10:18 PM | #82 |
Grade 1
Join Date: Apr 2012
Location: Valley Stream NY
Posts: 9,041
|
RW it stands for composite speed rating and is comprised of the last 4 sr weighted regardless of dist or surface. You can find more info in Micks' RDSS Documentation Section.
Tim
__________________
Trust but verify |
10-31-2021, 10:23 PM | #83 |
Grade 1
Join Date: Mar 2010
Posts: 3,489
|
Thanks!
|
11-01-2021, 12:21 AM | #84 |
Grade 1
Join Date: Jun 2005
Location: Nanaimo, British Columbia, Canada
Posts: 8,853
|
Here you go:
"CSR– Composite Speed Rating. A weighting of the RDSS Adjusted Speed Rating from the last 4 usable lines, regardless of distance, surface, race conditions or finish. The weighting is as follows: 100% of the last line SR + 62% of the average of the last 2 lines SR + 38% of the average of the last 3 lines SR + 24% of the average of the last 4 lines SR. Thus the last line SR has a major weighting in the CSR, with the weighting declining for older lines. " Also - " if you use CSR, and you judge that it is compromised by clearly troubled or excusable low Speed ratings in the last 4 lines (more affected by the last 2 lines), you can recompute the CSR by clicking on its value in the Horse Header screen. The LOWEST rating in the last 4 is removed and the remaining Top 4 are used in a recalculation. (There are better ways to accomplish this, and will be in future, AND if you do more than 1 horse in a race, previous recalculations are lost – but that said, if you use CSR for a measure of consistency, and Top 5 rankings matter, and it is a component in Rx – then feel free to touch up CSR by hand if you like)." RDSS Documentation - http://rdss2.com/V2.1-docs-pdf http://paceandcap.com/forums/showthread.php?t=13336 Ted
__________________
RDSS - Racing Decision Support System™ |
11-01-2021, 01:24 AM | #85 |
Grade 1
Join Date: Mar 2010
Posts: 3,489
|
What if a horse has fewer than 4 starts?
|
11-01-2021, 03:33 PM | #86 |
Grade 1
Join Date: Jun 2005
Location: Nanaimo, British Columbia, Canada
Posts: 8,853
|
We use the same progressive weighting described above for however many lines there are (up to 4 last usable lines, unless skipping the lowest of the last 4 as described).
Ted
__________________
RDSS - Racing Decision Support System™ |
11-01-2021, 05:46 PM | #87 |
Grade 1
Join Date: Mar 2010
Posts: 3,489
|
So, you sort of extend it out as if there were the same number of races as the other horses? Or does the horse with, say, two races show a lesser number based on his inexperience?
|
11-01-2021, 06:20 PM | #88 |
Grade 1
Join Date: Jun 2005
Location: Nanaimo, British Columbia, Canada
Posts: 8,853
|
I was probably not too clear, sorry! For geeks and formula wranglers -
CSR: For 4+ races, we use 100% of line 1 SR + 62% of (line1+line2)/2 + 38% of (line1+line2+line3)/3 + 24% of (line1+line2+line3+line4)/4 For 3 races, we use 100% of line 1 SR + 62% of (line1+line2)/2 + 38% of (line1+line2+line3)/3 + 24% of (line1+line2+line3)/3 For 2 races, we use 100% of line 1 SR + 62% of (line1+line2)/2 + 38% of (line1+line2)/2 + 24% of (line1+line2)/2 For 1 race, we use 100% of line 1 SR + 62% of line1 + 38% of line1 + 24% of line1 100-62-38-24% is a Fibonacci progression (an organization of natural and mathematical phenomena). Works for me ... It's a smoothing and averaging of recent lines which conceptually depends on how useful the Adjusted Speed Rating concept itself is - i.e. the distance equalization adjustments, the daily-track and inter-track adjustments and the surface to surface adjustments turf/dirt/poly (which is really just another track to track adjustment). Of course no set of adjustments is perfect, hence the minimal ability to exclude one low rating (especially in Top 2) which disproportionately affects CSR. But this concoction seems to have pretty good legs, especially when married with other ratings, and especially with other non-correlated ratings (e.g. an oddsline built of not only speed/pace/deceleration factors, but also positional pace, class, public ratings like Prime Power/Profit Line/Morning Line -- and public tote odds --> hence Rx). Hope that helps. Ted
__________________
RDSS - Racing Decision Support System™ Last edited by Ted Craven; 11-01-2021 at 07:55 PM. Reason: clarify re excluding 1 low rating & 'non-correlated' importance |
11-01-2021, 07:04 PM | #89 |
Grade 1
Join Date: Mar 2010
Posts: 3,489
|
Yes, it does help. That's pretty much how I envisioned it should be done based on your basic premise. Okay, I have admitted my geek. lol
|
11-06-2021, 04:33 PM | #90 |
AlwNW1X
Join Date: May 2021
Posts: 15
|
Thanks Tim, I appreciate the info!
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Rmath's contender elimination using CSR rankings | lone speed | RDSS2 / FAQ's | 7 | 08-28-2022 03:00 AM |
Race using Rmath's method | shoeless | Previous 'Handicapping Discussion' Forum | 23 | 12-31-2012 04:30 PM |