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For example, if the pairing were 1600 vs. The difference in rating for two players translates into an expected win probability. If you won, your rating would increase by an amount (a tunable constant called "K-factor" multiplied by the win probability), and you would go up to, say, 1516 while the other team's rating would drop. When you play against other 1500-MMR players, the win probability for that 1500-1500 matchup is 50-50. Let's say, for example, that everybody starts at 1500 MMR. The core concept is that they're all designed around win probability on a per-game basis. Blizzard's been using a similar system for years and years. The absolute best resource for learning about rating systems are sites that detail the Elo and Glicko rating systems. In-game metrics are not factored because they can be gamed or otherwise manipulated.Ĭan you give more detail about what exactly MMR is? It starts at some seed value and, through wins and losses, goes up and down.
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The mean of the curve, and what we determine to be the measurement of skill is what is called a player's matchmaking rating, or MMR. Because individual player skill varies wildly (someone can play distracted and underperform or be exceptionally focused and overperform), it is often represented as a Gaussian curve. The quality of opponents you meet and beat ultimately paints a picture of "stronger than A, weaker than B". "Skill" is not measured absolutely, it is inferred by predictions and game results. (Note that level is explicitly not included here.) The matchmaker seeks to fairly match players according to the following criteria: Continued abuse of our services will cause your IP address to be blocked indefinitely.#1 Hopefully this post will answer a lot of frequently-asked questions and quell confusion about the nature of matchmaking. Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue. If you do not understand what is causing this behavior, please contact us here. If you promise to stop (by clicking the Agree button below), we'll unblock your connection for now, but we will immediately re-block it if we detect additional bad behavior.
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