How are these used.

[froggy]

Speed ratings and variant.

[Ted Craven]

Froggy,

The TrackMaster Speed Rating is a final time number which includes:

1) the Daily Track Variant (how fast/slow that day's surface was),
2) the Inter Track variant (how fast or slow each surface is relative to a universal norm).
3) the horse's speed rating (compared to the 'par' for that track/distance/surface).

The sum of the 3 is the TrackMaster Speed rating, which is published in track programs at most race tracks across the US and Canada. The DTV component is shown separately. The ITV is not shown (state secret). Sartin software uses the published DTV and the unpublished ITV to adjust raw running times so that they are comparable to each other and (supposedly) can be rated against each other (buyer beware: often reliable, except when they're not).

The TM SR is distinct from the software's Speed Rating (under the SR column - see below), which is calculated by the programs from equalized, normalized, adjusted Final Times.

Uses: The TM SR can be a corollary to computed SR (which one is best of last 3 comparable, be careful about using the best ever, etc, etc). The DTV: how fast or slow was the track: perhaps very slow or very fast, then beware if the times get adjusted out of whack. RDSS has a feature (use of which coming soon) to limit the DTV to a low or high value (e.g. +- 15) to smooth out the extremes.

You can also just ignore the TM SR, but I put it in to serve as a tie-together of how everything relates to everything. In Validator and Speculator, the TM SR shown is the Net SR, i.e. original TM SR minus DTV. Erring on the side of completeness, I show it all.

BTW, the TrackMaster Class Rating (CR) for each race, now found on the Adjusted screen, is TM's numerical estimate of the relative class of each race, based on best projected final time Speed Ratings for the entrants. Again, caveat emptor.

Please refer to the markups on the screenshot below to see how various screens relate to each other, what is located where across different software and how it ties to the TrackMaster/Equibase PDF Past Performance listing.

Perhaps others can chime in on what uses they make of the TM Speed Rating, or how they react to various swings of Daily Track Variant.



Ted

[froggy]

Thanks Ted.

Froggy

[admin]

Hi Ted
Once more if you don't mind
Doc's basic iinstructions in regards to a Plus with a zero race
are to use races with over a 80 speed rating (DRF)regardless of position
So would the net SR be the number to use for this

[Ted Craven]

(Sorry, I deleted an initial reply on this).

Bill,

If Doc was referring to the DRF SR back in the day, that sounds something like 'within 4 seconds (20 fifths) of the 3 year best track record', which would be 100. I don't recall whether his comments also referred to any DTV adjustment, so I'm not sure at the moment if I have any light to shed on comparable use of Val/Spec/RDSS use of TrackMaster SRs: whether raw TM-SR, TM-SR less DTV, or the software computed SR.

I tend to let Total Energy or Perceptor I for any paceline be a guide for whether it's a candidate to represent the horse today, subject to things like: not absolutely the very best ever and never repeated, current form, demonstrable energy biases.

Ted

[mufasa]

Originally Posted by Ted Craven

(Sorry, I deleted an initial reply on this).

Bill,

If Doc was referring to the DRF SR back in the day, that sounds something like 'within 4 seconds (20 fifths) of the 3 year best track record', which would be 100. I don't recall whether his comments also referred to any DTV adjustment, so I'm not sure at the moment if I have any light to shed on comparable use of Val/Spec/RDSS use of TrackMaster SRs: whether raw TM-SR, TM-SR less DTV, or the software computed SR.

I tend to let Total Energy or Perceptor I for any paceline be a guide for whether it's a candidate to represent the horse today, subject to things like: not absolutely the very best ever and never repeated, current form, demonstrable energy biases.

Ted

Ted/Bill:

From my recent reading on the Satin Methodology as to pace line selection (back in the day) he was talking about the DRF SR without consideration of variant as to the 80 SR number. During these times the pace lines and/or contenders had to be selected and then entered into the programs so the SR, as a helpful guide in this endeavor seemed logical. But once entered as far as the methodology and the given programs go things like Total Energy (TE) took over in the decision making process. That is the entered pace lines were converted to TE, FPS, and other well known factors.

In today’s world and especially with RDSS we have the advantage of using the Primary/Perceptor and TE calculations for each entry in the particular race to help us in making our basic pace line selection. This in my opinion, considering some basic criteria, is the best way to select the best comparable pace line of last 3 races. After all the RDSS or Sartin Methodology in general is grounded in the computations of TE and Primary/Perceptor factors, etc. to derive its most predictive outputs like BLBL, V/DC, and TPR.

I read somewhere in the FU’s that sometimes you learn more about what you are doing or trying to do when you try to explain it.

Robert

[froggy]

Robert,

Good comment.
I too find Perceptor to be highly predictive for paceline selection.

Froggy