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Das Elo-Ranglistensystem wurde vor der Einführung des Ligasystems für Ranglistenspiele in League of Legends genutzt .

Das Elo-Bewertungssystem ist eine Methode um das relative Können eines Spielers im Vergleich zu anderen Spielern anzugeben. Es ist benannt nach seinem Erfinder Arpad Elo, ein US-amerikanischer Physiker und Schachspieler ungarischer Herkunft, welcher es ursprünglich für Spiele mit zwei Mitspielern, wie Schach, entwarf.[1] Heutzutage wird dieses System in verschiedenen abgewandelten Variationen auch für andere Teamspiele verwendet.

In League of Legends wurde diese Methode dafür genutzt um gleichstarke Mit- und Gegenspieler für Ranglistenspiele zu finden. Das Elo-Ranglistensystem wurde nie für Custom- oder Co-op vs. AI-Spiele verwendet. Jeder Spieler hatte verschiedene Elo-Wertungen für die verschiedenen Ranglistenwarteschlangen: 3v3 arranged, 5v5 solo and 5v5 arranged teams. Die Bewertung war erst nach 5 Spielen in einer Warteschlange sichtbar. Aähnlich den heutigen Klassenbelohnungen erhielten Spieler damals Medaillen im Beschwörerprofil für ihre Leistungen am Ende von Saison 1 und Saison 2.

  • Bronze (Alt): Zwischen 1250 and 1399 (3v3: 1249-1409, pre-made 5v5: 1249-1409) (Top 25%)
  • Silber (Alt): Zwischen 1400 and 1519 (3v3: 1410-1519, pre-made 5v5: 1410-1499) (Top 10%)
  • Gold (Alt): Zwischenn 1520 and 1899 (3v3: 1520-1699, pre-made 5v5: 1500-1749) (Top 3%)
  • Platin (Alt): 1900 and above (3v3: 1700+, pre-made 5v5: 1750+) (Top 0.2%)

About a month before the end of Season 2, a new rating tiers system was introduced:[2]

  • Bronze: Zwischen 0 and 1149 (Team: 0-1249) (Top 100%)
  • Silber: Zwischen 1150 and 1499 (Team: 1250-1449) (Top 68%-13%)  Majority of Active Player Base
  • Gold: Zwischen 1500 and 1849 (Team: 1450-1649) (Top 13%-1.5%)
  • Platin: Zwischen 1850 and 2199 (Team: 1650-1849) (Top 1.5%-0.1%)
  • Diamant: 2200 and above (Team: 1850+) (Top 0.1%)  

In addition, rankings were subdivided into smaller sections, like Bronze V or Gold II. These are sectioned off every seventy points of elo (1150-1220 is Silver V, 1220-1290 is Silver IV, etc.).

These were the tiers for the North American platform, they differed a bit for other platforms.

  • Anforderungen für die Bronzewertung
  • Anforderungen für die Silberwertung
  • Anforderungen für die Goldwertung
  • Anforderungen für die Platinwertung
  • Anforderungen für die Diamantwertung

Elo-Berechnung Bearbeiten

The specific formulas which were used for Elo calculations in League of Legends are unknown. However, most Elo implementations share the same basics as that originally designed for chess. A brief summary is given below. For a more detailed discussion, see Wikipedia.

It is assumed that a person's performance varies from game to game in approximately a normal distribution and a person's Elo rating was the mean of that distribution. A person with a higher Elo may perform better on average than a player with a lower Elo, although usually it was mainly to do with the teamwork around that player. This score was determined entirely by win/loss statistics in relation to other players. For players A and B with respective Elo ratings of Ra and Rb the expected victorious outcome Ea of the game for player A was given by the following formula:

Ea = \frac 1 {1 + 10^{(Rb - Ra)/400}}.

For every difference of 400 points, the team/player with the higher score is ten times as likely to win as the other team/player. This standard is for Chess and may have been different in League of Legends. After a game the actual outcome was compared to the expected outcome and each team/players rating is adjusted to bring them closer to where they should actually be. As a result, if a team was expected to win and does their score changes less than if they were expected to lose and instead won. Successive games would have eventually brought each player/team to a point where they were expected to win 50% of the time against opponents of equal score.

A player's change in rating was linear to the difference between the expected outcome and the actual outcome. It was given by the following formula where Sa is the result of the game and is presumably 1 for a win and 0 for a loss.

Ra_{new} = Ra_{old} + K(Sa-Ea)

The magnitude of the score change was determined by the player's K value and other things, like a server crash (When the score you get is 50%). In chess initially this K value is big (25 for their first 30 games) resulting in large changes in Elo. This is so a player can rapidly find her or his correct place in the ranking system. As their number of wins and losses became more even this K value was reduced to prevent dramatic changes in Elo against evenly matched opponents (K = 15 to 7). This also prevented inflation in ratings at high Elo play. It appears that League of Legends used a similar system of changing K values: K appeared to be starting around 100, eventually leveling out to about 25.[3]

All players started ranked play with an Elo of 1200 for their first 10 games at level 30. From there they were assigned a score and changes are made as normal.[4]

Elo-Verlust Bearbeiten

Prior to the Season 2 rating system remake, Elo decayed over time when you were above 1400 Elo:[5]

  • Elo decayed at a rate of 50 Elo for Diamonds, 35 Elo for Platinums, 25 Elo for Golds, 10 Elo for Silver, and 0 Elo for Bronze for every 4 consecutive weeks of inactivity and every 7 days thereafter.
  • For normal rating, inactivity was defined as no activity in any queue.
  • For ranked rating, inactivity was defined as no activity in the specific queue (arranged 5x5, arranged 3x3, and solo/duo 5x5 are all tracked separately). Ranked decay only applied to people who were ranked above 1400 rating.
  • The decay timer was reset after a game was played in that specific queue.

Weitere FaktenBearbeiten

  • Elo-Veränderungen waren größer für die ersten ~50 Spiele und reichten von 50-13.
  • Das bestreiten von Ranglistenspielen mit einem Partner hatten nie zusätzliche Auswirkungen auf den Elo-Verlust/-Gewinn.
  • Die vorläufige Elo-Wertung wurde nach 5 Spielen angezeigt, um aber seine Elo-Platzierungen abzuschließen benötigte man, wie heute 10 Spiele.

Siehe auch Bearbeiten

Referenzen Bearbeiten

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