Matchmaking is the process through which the system groups players into opposing teams for public games. With the exception of bot games, matchmaking is mostly determined by matchmaking ratings MMR. Unranked or casual games do not display matchmaking ratings and still doesn't track your MMR for solo and party queues. This function matches you against another player in the Mid Lane. This match is over when one player dies twice, loses a tower, resigns or disconnects. Type gg in chat to resign.
General Discussion - Behaviour score matchmaking - Vs MMR Matchmaking - DOTABUFF - Dota 2 Stats
Dota 2 players found their matchmaking score erased as Valve introduced on August 6 an experimental matchmaking system developed towards the team play core aspect of the game. The MMR numbers are erased but the Medal earned so far in the season stays in place. The new update focuses on two big aspects: the removal of the two types of MMRs, party and solo and the addition of role MMR. While Valve are aware that the first concept will raise the most controversy in the community, the latter is actually something that the players have been hoping to see implemented for a long time now. Most of the issues related to this we think we can solve with better algorithms.