title: “POINTWISE: Predicting Points and Valuing Decisions in Real Time with NBA Optical Tracking Data"
info:
title: "POINTWISE: Predicting Points and Valuing Decisions in Real Time with NBA Optical Tracking Data"
authors: "Cervone, Dan; D'Amour, Alexander; Bornn, Luke; Goldsberry, Kirk"
labs: "Harvard University"
conference: "Arthritis and Rheumatism (2012)"
sport: "Basketball"
sport_icon: "basketball"
url: "http://www.sloansportsconference.com/content/pointwise-predicting-points-and-valuing-decisions-in-real-time-with-nba-optical-tracking-data/"
authors:
Basketball is a game of decisions; at any moment, a player can change the character of a possession by choosing to pass, dribble, or shoot. The current state of basketball analytics, however, provides no way to quantitatively evaluate the vast majority of decisions that players make, as most metrics are driven by events that occur at or near the end of a possession, such as points, turnovers, and assists. We propose a framework for using player-tracking data to assign a point value to each moment of a possession by computing how many points the offense is expected to score by the end of the possession, a quantity we call expected possession value (EPV). EPV allows analysts to evaluate every decision made during a basketball game – whether it is to pass, dribble, or shoot – opening the door for a multitude of new metrics and analyses of basketball that quantify value in terms of points. In this paper, we propose a modeling framework for estimating EPV, present results of EPV computations performed using player- tracking data from the 2012-13 season, and provide several examples of EPV-derived metrics that answer real basketball questions.
title: “POINTWISE: Predicting Points and Valuing Decisions in Real Time with NBA Optical Tracking Data" info: title: "POINTWISE: Predicting Points and Valuing Decisions in Real Time with NBA Optical Tracking Data" authors: "Cervone, Dan; D'Amour, Alexander; Bornn, Luke; Goldsberry, Kirk" labs: "Harvard University" conference: "Arthritis and Rheumatism (2012)" sport: "Basketball" sport_icon: "basketball" url: "http://www.sloansportsconference.com/content/pointwise-predicting-points-and-valuing-decisions-in-real-time-with-nba-optical-tracking-data/" authors:
Gota Shirato date: 2019-06-20T00:00:00+09:00 description: "Summary" type: technical_note draft: true
要旨 Abstract
Basketball is a game of decisions; at any moment, a player can change the character of a possession by choosing to pass, dribble, or shoot. The current state of basketball analytics, however, provides no way to quantitatively evaluate the vast majority of decisions that players make, as most metrics are driven by events that occur at or near the end of a possession, such as points, turnovers, and assists. We propose a framework for using player-tracking data to assign a point value to each moment of a possession by computing how many points the offense is expected to score by the end of the possession, a quantity we call expected possession value (EPV). EPV allows analysts to evaluate every decision made during a basketball game – whether it is to pass, dribble, or shoot – opening the door for a multitude of new metrics and analyses of basketball that quantify value in terms of points. In this paper, we propose a modeling framework for estimating EPV, present results of EPV computations performed using player- tracking data from the 2012-13 season, and provide several examples of EPV-derived metrics that answer real basketball questions.
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