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diff --git a/doc/results.txt b/doc/results.txt new file mode 100644 index 0000000..c309baf --- /dev/null +++ b/doc/results.txt @@ -0,0 +1,27 @@ +== Scoring rules == +Every race or ranked qualifying session results for each entry are handed ordinal numbers as "groups" in which the entry was classified. + +For qualifying, a group is simply the qualifying position (not applying any grid drop penalties, but applying disqualification/exclusion). + +For races the following rules apply: + * race winning entry forms group "1" + * among the drivers classified on the lead lap, other groups are as follows: 2-3 places are group "2", 4-5 places are group "3", 6-10 places are group "4", 11-15 places are group "5", etc. + * for drivers classified outside the lead lap, the groups are formed by the drivers classified with the same numbers of completed laps (each distinct lap number as a separate group) + * non-classified drivers (because of completing not enough laps, but not retiring) form a single separate group, below all the classified drivers + * drivers retiring due to driver accidents form a single separate group, below other drivers + * drivers disqualified from the race form a single separate group, below other drivers + * drivers retiring due to mechanical issues form a special "0" group together with drivers which did not start the race + +After separating session results into groups, all entries from non-"0" groups form a "tournament". All possible entry couples are paired against each other to form "duels". The outcome of the duel may be a win/loss (if the entries are grouped in different groups) or a draw (if entries are grouped within the same group). + +All such duels are then treated as input for Elo rating algorithm. + +Specific rules regarding Elo implementation for this application's purposes: + * rankings are applied (evaluated) after each session ("tournament") + * no minimum rating limit for driver is enforced + * drivers are rated from their first entry (there's no initial grace period) + * shared drive entries have the effective ranking equal to the average ranking of drivers sharing the drive; pending ranking points from duels of such entries are divided equally between drivers sharing the drive + +Other than that, standard Elo rating conventions apply: + * drivers start with identical initial rating + * duels between high-ranked drivers change their rankings by fewer points than duels between low-ranked drivers |