SOL Scoring System discussion

To inform a decision about the SOL scoring system for 2009, the 2008 scores have been re-calculated using a possible alternative system.

There are two reasons why we may wish to review the SOL scoring system for 2009: (1) the new event structure provides an opportunity for change; (2) the old system, being based on the winners time, is simple but does not allow for the strength of competition.

In SCORE (Jan-Feb 2009), Paul Duley suggests that we use the colour (course) as the basis for calculating SOL points. To see the impact of this, I have re-calculated 2008 SOL scores using a course-based formula. The actual formula used is basically the same as for the 6-Days and SoSOL (the average time on a course earns 1000 points; each standard deviation faster than average gets a competitor an extra 200 points; each standard deviation longer than the average loses 200 points). The message from the re-calculation is that it produces relatively little change, but several age classes would have changed hands with this system in place. Because the combinations of age classes and courses have been carefully chosen, there are very few age classes where the average score is significantly less (or more) than the overall average.

The process of calculating points using this system is only marginally more complex than with the current method.  The only change is that it will be important to wait until agreed final results have been confirmed for all classes before embarking on calculations as one changed time (eg a re-instatement after a disqualification) will affect the points for all runners on a course.

This file, sol2008_revisedstandings.pdf shows the re-calculated scores against the previous ones. There are some minor errors in this, and it is provided as a guide only.  Paul’s SCORE article invites comments on how we should compute SOL scores in 2009. You can either comment below or send them to Paul or Phil Smith (Competitions Convenor), and I will try to answer any questions about the actual scoring systems, see the contacts page.

PS: with the new formula, it is possible to score less than 0, if you take more than 5 standard deviations longer than the average time. Only one competitor, in one event, achieved this distinction in 2008. To save embarrassment, I have replaced their negative score with 0 in the table!

You can see the original/official 2008 final standings here sol2008_scores.pdf

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Last edited: 02nd Jan 09