Lack of a common language across the whole match is also avoided, but less strongly. Your ranked MMR is visible only to you and your friends. We actually track a total of four MMRs for each player: These patterns are typical. Win rate is not a meaningful measure of player skill.
For the purposes of measuring the goodness-of-fit criteria listed as 2 and 3 above, the matchmaker assigns each party aggregate skill and experience numbers.
Under certain circumstances, we may need to reactivate calibration, if we think the MMR is inaccurate. If it helps, my solo MMR is 4. More on this below. Become a Redditor and subscribe to one of thousands of communities. If two players are close together in the diagram, they are considered good candidates to put into a match together. The typical career trajectory of a player new to Dota 2 as he gains experience and moves towards the right is to gradually move upwards as their skill increases. Matchmaking will never be perfect, and the technical details in this post refer to the current state of affairs and are likely to change as we find better approaches.