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RDSS Racing Decision Support System – The Modern Sartin Methodology

 
 
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Old 10-17-2011, 10:33 AM   #1
deepcloser
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What is Perceptor?

What is Perceptor?

The value on the primary screen. I'm working through the video tutorials and there a lot of references to it.

Thanks,
Dennis
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Old 10-17-2011, 11:17 AM   #2
Ted Craven
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Hi Dennis, welcome to the neighbourhood.

Perceptor Total is a representation of what a given paceline would look like if you selected it and examined it on the BL/BL screen - specifically, what its Primary Line Score (almost) would look like. To prove this, you can select all the lines for just one horse and compare the Perceptor ranks on the Primary screen to the Primary Line Score ranks on the BL/BL screen. The ranks should be the same (it's the same underlying formula), though not sorted in the same order.

Perceptor, distinct from Primary Line Score, adds the nuance of showing the percentage deviation from Best, rather than only a ranking and numeric score. Each of the 7 Primary factors is shown on the Primary screen in the format of percentage deviation from best, then those percentages summed to an underlying total (not shown) for each paceline. Those totals are then themselves expressed in the same format. A Perceptor Total of 0.0 means it is the best of all that horse's lines, 1.5 means 1.5% worse than best, etc. The RED-GREEN-YELLOW colour coding is a 1-2-3 ranking. If you look at the same Primary screen on the Analysis section, those Perceptor Total differences and rankings are comparing different horses to each other.

If you want to know which lines represent strongly from a line score point of view, consult the relative rankings of those Perceptor numbers. You will likely not want to take the absolute best number from an entire set of past performances, rather consider recent performance on a similar surface and distance structure, if you are able. Of course you'll need to make a current form assessment to know if you can use a less recent line over a more recent line. You might want to use a less recent line (e.g. 3rd back) because even though perhaps not a winning effort, or say 60 days ago), it ran and finished evenly against a faster pace of race than in its more recent lines and will perhaps not face a similar pace scenario today today. It may have won its last race 25 days ago against a slower time and worked a few times since, which race may make it look worse compared to others than if you used its 3rd back which shows what it is capable of when fit (which it presumably is today). Perceptor can help you know which of a horse's lines look relatively best to BLBL, though you must develop the method to decide when to use those lines. Perhaps you determine that a horse's 2nd best effort recently will still rank the horse in the top 3 of BLBL. Doing so builds in a reserve capacity to the horse's projected performance today (i.e. it has recently shown it can do even better than you are representing it). Etc.

It won't help you know whether a race will set up early or set up late - you can consult the Segments screen for that, or the E/L Difference Graph.

On the Analysis Panel, once you have selected representative lines for a horse, use the Perceptor Total and Total Energy columns on the Primary Tab to eliminate horses down to the best 5 Total Energy and also leave in any 5th ranked Perceptor Total horse. Then examine your 5 contenders to determine if any are not Win contenders, only in-the-money, and then which remaining Win contenders you will bet.

Hope that helps.

Ted
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Last edited by Ted Craven; 10-17-2011 at 11:25 AM.
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Old 10-17-2011, 02:15 PM   #3
deepcloser
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Thanks

Thanks Ted,
I'm sorry that later I found the glossary and another good description you provided on 04-20-2009. I guess you get that question a lot.

http://paceandcap.com/forums/showpos...8&postcount=20

Take Care,
Dennis

Last edited by Ted Craven; 10-17-2011 at 02:57 PM. Reason: added link
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