About Map Weighting - Steell/Ultimate-Mapchooser GitHub Wiki

The Weighting system is used when picking maps/groups randomly, in order to specify the "likelihood" of a map/group being picked.

###When Is It Used? The Weighting system is used in various places: when a vote menu is being populated with maps, maps are chosen from the group at random. How likely a map is going to be picked for inclusion in a vote is determined by its calculated weight. This value is calculated via the Weighting system.

Another case is when a module requests a random map from Ultimate Mapchooser (the Random Mapcycle module does this). How likely it is that the map will be picked is determined by its weight, again calculated via the Weighting system.

###Modules The Weighting system is extended in UMC modules; without any modules adjusting weights, all random selections are uniform (all weights are the same). There are two modules packaged with Ultimate Mapchooser that extend the Weighting system: Weight and MapRate Map-Reweighting. The first of which allows users to define a weight and group_weight option for maps and map groups respectively in a UMC-Mapcycle. The second module will adjust a map's weight based off of it's average rating in the external Map Rate SourceMod Plugin.