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APBRmetrics (Association for Professional Basketball Research Metrics) is a term used by a few to refer to the analysis of basketball through objective evidence, especially basketball statistics. APBRmetrics is a cousin to the study of baseball statistics, known as Sabermetrics, and similarly takes its name from the acronym APBR, which stands for the Association for Professional Basketball Research. A key tenet for many modern basketball analysts is that basketball is best evaluated at the level of possessions. During a single game, both teams have approximately the same number of possessions, because they alternate possession. (A team can have slightly more if it begins and ends a quarter or half with possession.) However, over the course of the season, teams play at very different paces, which can dramatically color their points scored and points allowed per game. Therefore, these analysts favor use of points scored per 100 possessions (Offensive Rating) and points allowed per 100 possessions (Defensive Rating). A second core tenet is that per-minute statistics are more useful for evaluating players than per-game statistics. From John Hollinger's ''Pro Basketball Forecast'': "It's a pretty simple concept, but one that has largely escaped most NBA front offices: The idea that what a player does on a per-minute basis is far more important than his per-game stats. The latter tend to be influenced more by playing time than by quality of play, yet remain the most common metric of player performance." A more complete explanation of possession-based analysis is available in "A Starting Point for Analyzing Basketball Statistics" in the Journal of Quantitative Analysis in Sports. ==History== While the use of possession stats dates back at least as far as former North Carolina Coach Frank McGuire, modern quantitative basketball analysis came into existence when Bill James gained popularity for his ''Baseball Abstracts'' and basketball enthusiasts borrowed some of the ideas and the overall philosophy of the importance of statistical analysis for fine-tuning achievement. Early basketball analysts focused on "linear weights" statistics, which assign a value to each key statistic and add and subtract to find a player's total efficiency, usually on a per-minute basis and various brands of this were created and often became the basis for books. Among these people were Dave Heeren, Bob Bellotti, and Martin Manley. Beginning in the 1990s, Dean Oliver began to popularize the use of possession statistics. Oliver and John Hollinger are credited with moving this use of basketball statistics into the view of more basketball fans through their websites in the late 1990s. Oliver published his book ''Basketball On Paper'' in 2003, while Hollinger began writing the ''Pro Basketball Forecast'' series in 2002. Several dozen other serious basketball fans / analysts also have made regular and helpful contributions to fine-tuning the methods and their usage and advancing new approaches to research questions through the active (APBRmetrics forum ) and now there are a dozen or more other sites where other fan / analysts are doing sophisticated work. In the wake of the best-selling book ''Moneyball'', which glamorized Sabermetrics,quantitative basketball analysis began to receive some attention from the media and NBA teams. The goal was to find a more objective method of analyzing player performance and to find the most productive mix of players within the salary cap or budget. In 2004, Oliver was hired as a full-time consultant by the Seattle SuperSonics, making him the first publicly acknowledged APBRmetrician to be employed by an NBA team full-time. The Houston Rockets took the movement one step further in April 2006 by hiring Daryl Morey as their assistant general manager and announcing that he would replace Carroll Dawson as general manager after the 2006-07 season. Morey, previously Senior Vice President of Operations and Information for the Boston Celtics, had provided statistical analysis for the Celtics front office and wrote a little about advanced statistics for the Celtics Web site but had no traditional basketball experience as a player, coach or scout. The Web site (82games.com ), which debuted in 2003, brought the analysis of plus-minus ratings—how well a team fares with a certain player or lineup on the floor as opposed to on the bench—and counterpart production into the mainstream basketball knowledge (it had long been a common measurement in ice hockey). Additionally, there are useful breakdowns of certain statistics such as shooting percentages, sorted and measured by area of the court and time left on the clock. These statistics allow analysts to measure contributions not accounted for by traditional statistics, particularly at the defensive end of the court, an area which was underdeveloped in the first wave of new statistics, including PER and the initial player points allowed defensive rating (which was not based on play-by-play tracking of one-on-one defense, because it was not yet available, and also gave heavy weight to the points allowed by the rest of the team, as well as the player himself.) During the 2006 NBA Playoffs, Synergy Sports Technology provided a free trial of a website that combined video of every NBA game, with statistical breakdowns of player tendencies similar to those long in use among NBA teams—going left vs right, being the ball handler on the pick and roll, etc. This combination of video and statistics is current used by many NBA teams. Public access to the combined video and statistical analyses has been discontinued indefinitely. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「APBRmetrics」の詳細全文を読む スポンサード リンク
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