Quote:
Originally Posted by SamP
Ted you stated that "Early Pace = EP = velocity to the 2nd Call. In RDSS, either 2nd call velocity (SC) or EPR = velocity to the 2nd Call."
When I look at EPR, on the TPR + EL tab, I see figures in the 80's and 90's. When I look at SC,on the POH tab, I see figures in the 50's. How is EPR calculated?
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Sam,
The EPR (Early Pace Rating) and the SC Second Call Velocity numbers, and ranks for each - should be almost identical to each other. They are simply calculated in different ways. EPR is a component of the points based rating system (Total Pace Ratings - TPR) described in the book
Pace Makes the Race, by Hambleton, Pizzolla, Schmidt, Sartin et al in 1991 ('an intro to the Sartin Methodology'). Essentially, a baseline 2nd call time (adjusted) in sprints and routes is given a 100 point rating, then times slower than that are less than 100 and times faster are greater than 100. The same 100 points basis is established for the 3rd Fraction, equalized at the various different 3rd fraction distances according to total race distance. The concept calculations described in PMTR are essentially what we use today in RDSS.
That EPR points rating still relies upon a 2nd call time (adjusted). The same 2nd call time is also expressed as a velocity - which is what is shown on the Velocity Tabs. The original Yellow Manual, and also Brohamer's
Modern Pace Handicapping describe how to calculate velocities =
feet per second values which are often in the 50's at the 2nd call point.
So both velocity-based, and points-based representations of 'average speed' during a race segment (e.g. from beginning to the 2nd call point) show the same thing - in different ways. The ranks of the different races, and horses, measured are the same. Also the same is the 2nd Call Computed Beaten Length number on the Segments screen. They ALL mean the same thing.
Additionally, for the EPR factor, when you look on the Primary Factors Tab, you will see numbers which represent difference from best (in percent), with 0.0% meaning: the best figure (i.e. of all a horse's PPs, or comparing all horses to each other, on the Analysis panel's Primary Tab). In addition to the same rank info you get from all the other 2nd call related factors, you also see the
gap between the different lines. Example - a 2nd ranked EPR (or any other factor) with a gap of 0.5% is much closer to the best than a 2nd ranked EPR with a gap of 2.0.
Hope that helps.
Ted