Tournoi

Voila je voudrais savoir ce qu'est un K-Value d'un tournoi ? Merci.

après recherche, j'ai trouvé ce que c'etait à Magic (c'est similaire aux autres sortes de tournois: echecs, par ex)

c'est une sorte de coefficient qu'on applique aux points DCI qu'un joueur gagne qui est plus ou moins élevé suivant l'importance du tournoi. (par ex, si un joueur avait gagné 30 points dci à un tournoi 16k, il en aurait gagné 60 si il avait gagné un tournoi 32k)

j'ai trouvé ça sur le net (DCI Certified Judge's Handbook)...mais ca date de 2006, donc ca a peut-etre changé depuis

D.2 - K-Value Explanations
8K: This is used for all premier events directed at the casual player, such as Friday Night
Magic.
16K: This K-value is the default for all events. A certified judge is not required and there
are no mandatory rules enforcement levels* (RELs) or deck verification requirements.
24K: Organizers may apply for this K-value if they:
• Use a certified judge;
• Use a minimum of REL 2*;
• Use deck verification procedures; and
• Have a minimum of 16 players participate.
32K: Organizers may apply for this K-value if they:
• Use a judge certified of Level 2 or higher;
• Use a minimum of REL 3*;
• Use deck verification procedures; and
• Have a minimum of 32 players participate.
40K: This K-value is reserved for select premier events, such as Grand Prix and National
Championships. This K-value is not available for general DCI-sanctioned events. See Magic:
The Gathering Premier Event Descriptions for more information.
48K: This K-value is reserved for select premier events, such as Pro Tour™ and World
Championships. This K-value is not available for general DCI-sanctioned events. See Magic:
The Gathering Premier Event Descriptions for more information. *For more information
regarding Rules Enforcement Levels (RELs), see the DCI Universal Penalty Guidelines.
...
...
D.3 - K-Value Criteria Explanation
Minimum Number of Players: In order for events to receive 24K, there must be a minimum
of 16 players in the tournaments. In order for events to receive 32K, there must be a
minimum of 32 players in the tournaments.

Certified Judge: A certified judge is required to receive a K-value of 24K or higher. A
certified judge is not required for tournaments of 8K or 16K. A minimum of a level 1 DCI
Certified Judge is required for events of 24K. A minimum of a level 2 DCI Certified Judge is
required for events of 32K. (Note: 24K and 32K events also have minimum participation
requirements.)

Deck Verification Procedures: In order to receive a K-value of 24K or higher, organizers
must use the following deck verification tools and procedures:
• Deck-lists;
• Deck-checks; and
• Deck-swaps (for sealed deck).

Rules Enforcement Level (REL): This requirement refers to the minimum Rules
Enforcement Level that must be used at the event in order for it to receive the desired
enhanced K-value. The most common REL is 1. If you wish to apply for 24K, you must use
REL 2 or higher. If you wish to apply for 32K, you must use REL 3 or higher. Tournament
organizers must announce the K-value of each event before the beginning of its first round.

[ Dernière modification par lyon4 le 16 mar 2008 à 11h37 ]

J'ai également trouvé ça dans le DCI™ UNIVERSAL TOURNAMENT RULES - Effective June 20, 2007.
Sur l'impact de la K-value sur ton classement, si le calcul précis t'interesse.

APPENDIX A—DCI RATING AND RANKING SYSTEMS

Elo Ratings System
The DCI produces Elo ratings for the all games it supports (see section 2 for a complete list of games)

The Elo player-rating system compares players’ match records against their opponents’ match records and determines the probability of the player winning the matchup. This probability factor determines how many points a players’ rating goes up or down based on the results of each match. When a player defeats an opponent with a higher rating, the player’s rating goes up more than if he or she defeated a player with a lower rating (since players should defeat opponents who have lower ratings). All new players start out with a base rating of 1600. The DCI uses the following equation to determine a player’s win probability in each match:

Personal Calculation:
1
--------------------------------------------------------------=Win Probability
10^(( Opponent’s Rating–Player’s Rating)/400) + 1

This probability is then used to recalculate each player’s rating after the match. In the equation below, players receive 1 point if they win the match, 0 if they lose, and 0.5 for a draw. Players’ new ratings are determined as follows:

Player’s New Rating = Player’s Old Rating + (K-Value * (Scoring Points–Player’s Win Probability))




Team Calculation:
1
--------------------------------------------------------------=Win Probability
10^((Average of Opponent’s Ratings–Player’s Rating)/400) + 1

This probability is then used to recalculate each player’s rating after the match. In the equation below, players receive 1 point if they win the match, 0 if they lose, and 0.5 for a draw. Players’ new ratings are determined as follows:

Player’s New Rating = Player’s Old Rating + (K-Value * (Scoring Points–Player’s Win Probability))

All players are rated at the beginning with the first match in which they play. Further ratings are calculated chronologically from that first match.

The DCI ranks players in geographic regions (continent, country, state, city, and so on) based on their Elo ratings to determine the top players in each area.