PWC обкатывает новую формулу туров (с сезона 2012) и новую формулу подсчёта очков.
Уже сейчас ясно что это будет более прогрессивная, справедливая форма подсчёта очков, но в тоже время и более сложная.
Пока нашёл описание и разъяснение на английском.
Деталей не знаю. Не разобрался ещё.
I have now experimentally scored the European Cup using FTV instead of the basic task dropping we used in the actual competition. You can find these sample results in
http://www.pottyplace.com/FTV.zipIn the file you will find:
europe2010 ND30: This uses tasks exactly as scored in 2010 with a Nominal Distance of 30 km, and all tasks normalised to the winner's points. I made an overall ranking using FTV, dropping 25%, 33% and 50% of the points.
europe2010 ND50: This uses tasks scored with a Nominal Distance of 50 km and no normalisation. Once again, I made an overall ranking using FTV, dropping 25%, 33% and 50% of the points.
FTV.xls: This spreadsheet allows you to explore the operation of FTV. Just enter a few scores for the 6 pilots for up to 6 tasks (making sure to specify the number of tasks) and you can see how FTV discards points from each pilot's total.
I also included the actual European Cup results for reference. Since in 2010 we dropped 5 out of 9 tasks, FTV-50% is probably the closest equivalent, and sure enough, the results are more or less the same for the scores using 30km nominal distance and also using 50km nominal distance.
Note that, when viewing the FTV scoresheets, the bracketed scores show the retained score / original score.
How does FTV Work?FTV stands for Fixed Total Validity and is a system for discarding in a competition where the winner's points for each task varies. While a traditional discarding system will discard a certain percentage of the tasks in an event, FTV discards a certain percentage of points from the overall Competition Value (CV).
The Competition Value is the maximum number of points that were available in the competition and is simply the sum of the winners' points. For this explanation, let us assume that we wish for discard 33% of the competition value. So we need to discard 33% of the CV. This number of points is the FTV Discard (FD).
First of all, we determine the Pilot's Score Quality (PSQ) for each task. This is simply the pilot's score for the task divided by the winner's points for the task. Once we have done this we choose the pilot's task with the lowest PSQ. If the winner's points for this task is less than or equal to the FTV Discard, then we simply discard the whole task; the pilot's overall score is reduced by his score for that task, and the FTV Discard is reduced by the winner's points for the task.
We then select the pilot's next lowest PSQ task, and repeat this step until we encounter a task where the winner's points are greater than the remaining FTV Discard. In this case we reduce the pilot's overall score by a proportion of his score for this task (Remaining FD / Winner's Points * Pilot's Score). The discard is now complete for this pilot.
It's easy to see that, when all your tasks are 1000pts, this system behaves exactly like a traditional discard system.
Advantages of FTV.
* It correctly applies discards to events whose tasks have variable winners' points.
* It avoids the situation where, when we get a number of low-value tasks, we end up discarding a large number of tasks, e.g. Brazil 2009, European Cup 2010. The amount of the discard never changes.
* It is progressive. The situation where an additional task causing an extra discards causes a jump in the scoring does not occur. You don't, therefore, need special rules for tasks on the last day of an event.
Disadvantages of FTV.
* Complexity. It's harder to really follow what is going on. However, this is ameliorated by the progressive nature of FTV.
Взято отседава
http://www.paraglidingforum.com/viewtopic.php?p=218365#218365
