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Goodbye RPI, Hello NET, this is a new measurement tool for NCAA DI women ’s basketball | Hoopfeed.com

the6man May 17


Published on May 4, 2020

Through

NCAA FAQs online

Starting from the upcoming 2020-21 season, NCAA Division I women’s basketball will use new indicators to replace the ratings percentage index. The NCAA Evaluation Tool (NET) can measure the quality of the team and help evaluate the team ’s resume for selection and seeding in the NCAA tournament.

Nina King, senior deputy director of track and field and chief of staff of Duke University, said: “This is an exciting time for us to look forward to the future. He will serve as the chairman of my women’s basketball committee in the 2020-21 school year.” After a lot of analysis, we think that the women ’s basketball net will be a more accurate tool. This will be determined by the committee. This will be determined by who you play, where you play, the efficiency of the game, and the outcome of the game. . “

From NCAA:

After a long evaluation process, the use of women ’s basketball nets was approved, including a comprehensive assessment of the strengths and weaknesses of men ’s basketball nets, which has been used as a classification tool by the Men ’s Basketball Committee I since 2018-19. season. After a team of Google Cloud Professional Services analyzed the women ’s basketball statistics for the past 10 years, the First Division Women ’s Basketball Committee concluded that the NET algorithm built specifically for women ’s basketball is the best ranking tool and should be selected from the upcoming season.

The biggest difference between NET and RPI

According to NCAA: “Women’s Basketball Net is a modern classification tool that can more accurately measure the quality of a team. The quality is determined by the person you play, where you play, the efficiency of the game and the result of the game.”

The Percentage Rating Index (RPI), established in 1981, provides supplementary data for the “Division 1” men ’s basketball committee. “It evaluates a wide range of teams that have selected and won championship brackets. The Women ’s Basketball Committee of Division I from 1984 Started using RPI in 2008. Simply put, RPI provides each institution ’s ranking based on the winning percentage and progress of Part I. “

NET infographic

Online NCAA FAQ
(Provided by NCAA)

What is the NCAA assessment tool (NET) for women ’s basketball?

The NCAA Assessment Tool (NET) for women ’s basketball matches is a modern classification tool used to measure the quality of teams and help evaluate the team ’s resume for NCAA game selection and seeding. The .NET ranking depends on who you have played, where you have played, the efficiency of the play, and the outcome of the game.

What are the components of the women’s basketball net?

The women ’s basketball net includes adjusted net efficiency and team value index.

What does the adjusted net efficiency mean?

The adjusted net efficiency is a measure of the team ’s overall performance in the regular season and is determined by the difference between offensive efficiency (scoring per round) and defensive efficiency (opponent scoring per round). It also considers the strength of the opponent (measured by their adjusted net efficiency) and the position of the game (home / away / neutral) (only for the first category opponents).

What does the team value index mean?

The team value index is a component of NET that focuses on results. In a team that beats other excellent teams, it is necessary to compare opponents, the position of the game and the ranking of the winners.

What does the position of the game mean for the team’s NET ranking?

In the “adjusted net efficiency” and “team value index”, the value of the same performance of the same opponent on the journey will be higher than in the neutral position, and the value in the neutral position is higher than at home. The number of such position adjustments is based on the data itself, because teams usually perform worse than neutrals on the road, rather than at home, so making adjustments can make a fairer comparison than just using the original values.

What is the difference between Women’s Basketball Net and RPI?

The women’s basketball net is a modern classification tool that can more accurately measure the quality of a team. The quality is determined by the person you play, the location of the game, the efficiency of the game, and the result of the game.

The Percentage Rating Index (RPI) was established in 1981 to provide supplementary data for the first division men ’s basketball committee to evaluate a wide range of selection and winning teams. The Women ’s Basketball Committee I has been using RPI since 1984. Simply put, RPI ranks each institution based on its I-part winning percentage and progress intensity.

The RPI contains three factors and the weights are as follows:

  1. Part I win percentage-25% of RPI
  2. Opponent’s win rate-50% of RPI
  3. Opponent’s win rate-25% of RPI

Will RPI be used with NET?

Starting from the 2020-21 season, RPI will no longer be used by the Women ’s Basketball Committee I.

How is the current women’s basketball NET algorithm determined?

After a long evaluation process, the First Division Women ’s Basketball Committee decided to move from RPI to NET in the 2020-21 season.

This includes a comprehensive assessment of the strengths and weaknesses of the men ’s basketball net. Since the 2018-19 season, the department has been used as a classification tool by the men ’s basketball committee of Department I.

After a team of Google Cloud Professional Services analyzed the women ’s basketball statistics for the past 10 years, the First Division Women ’s Basketball Committee concluded that the algorithm is an optimal classification tool and should be used from the 2020-21 season.

In view of the fact that some teams have set a lot of game schedules in the next two to three years, does the Division 1 Women ’s Basketball Committee consider a staged system?

The committee believes that there is no perfect time to implement the use of NET, and RPI or NET should be scheduled. These two indicators are mainly used as a sorting tool, because the choice of the tournament ultimately depends on who you have played, where you played, and the outcome of the game. Compared with RPI, NET is more accurate than RPI in measuring the performance of its opponents, so the team’s goal should be to play its best state without worrying about the way the “match” system is planned.

How will the NCAA Division I Women ’s Basketball Committee use NET during the selection process, and will the weight of the NET ranking be more important than other criteria during the selection process?

NET is one of the many criteria used by the I Women ’s Basketball Committee to select the seeds of 32 general member teams and 64 teams. This team constitutes the champion of the I Women ’s Basketball Championship.

The criteria used by the Division I Women ’s Basketball Committee to evaluate the team include (in alphabetical order):

  • Talent availability (injured or unavailable players)
  • huge loss
  • Common opponent
  • Competitive loss
  • Meeting record
  • Early competition and late competition
  • Face-to-face result
  • NET ranking
  • Non-meeting record
  • Overall record
  • Regional Advisory Committee Regional Ranking
  • Major victory
  • Meeting intensity
  • Progress intensity

During the selection weekend, committee members independently evaluate a large amount of information. These subjective opinions are formed after watching hundreds of games, investing a lot of time in the observation of the results of individual teams (or games), reviewing and comparing objective data, and discussing with coaches and campus / conference representatives. How members finally voted to select the 32 general member teams, each year to form 64 team champion teams for seeding and siege.

Will the .NET ranking be made public? If yes, how often do they appear?

Like the past RPI rankings, the NET rankings will be provided daily starting in early December 2020 and continue into the upcoming 2020-21 season.

What is the difference between men and women basketball nets?

Although the systems share high-level goals and separate components, the NET algorithm used in each system is different. The machine learning model developed for each movement uses only the data of that movement. The female model uses only female game data, while the male model uses only male game data. Use historical data from various sports to train everyone’s weights.

Why doesn’t NCAA release formulas / algorithms for NET?

NET rankings are derived from more complex algorithms, rather than having RPI (ie 0.25 * [Win Pct] + 0.5 * [Opp Win Pct] + 0.25 * [Opp Opp Win Pct]). The adjusted net efficiency and team value index are calculated using machine learning models implemented on many lines of code, and the calculation results are adjusted daily based on the new results to ensure that they do not have static “formulas.”

Now that we know that the women ’s basketball net will be in place in the 2020-21 season, will the committee adjust the current algorithm?

NET models may be retrained annually to include the latest season data. As they have done on RPI in the past, the Division 1 Women ’s Basketball Committee will continue to conduct an annual assessment of the women ’s basketball net and determine whether the nets need to be adjusted based on the new data in the game.

With the switch to NET, will the organization of the personal team table quoted by the Women ’s Basketball Committee I change during the selection process?

Although the organization of the team table has not yet been decided, the First Division Women ’s Basketball Committee will discuss possible changes to the team table at this summer ’s annual meeting. Once these decisions are made, the team table information will be publicly communicated.

Can my first women ’s basketball committee or staff provide more information on NET?

Members of the Women ’s Basketball Committee of Part I and / or NCAA staff are available to answer questions or provide advice on schedules and other areas related to NET. Interested parties are welcome to contact the NCAA Women ’s Basketball Club for more information.

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