sim.bracket: Simulate the full bracket starting with an empty bracket

In elishayer/mRchmadness: Numerical Tools for Filling Out an NCAA Basketball Tournament Bracket

Simulate the full bracket starting with an empty bracket

Description

Simulate the full bracket starting with an empty bracket

Usage

sim.bracket(
  bracket.empty,
  prob.matrix = NULL,
  prob.source = c("pop", "kenpom", "538"),
  league = c("men", "women"),
  year = current.year,
  home.teams = NULL,
  num.reps = 1
)

Arguments

bracket.empty	a length-64 character vector giving the field of 64 teams in the tournament, in order of initial overall seeding
prob.matrix	a matrix of probabilities, with rows and columns corresponding to teams, matching the output of bradley.terry(). If NULL, prob.source is used.
prob.source	source from which to use round probabilities for simulation — "pop": ESPN's population of picks (default), "kenpom": Ken Pomeroy's predictions (kenpom.com), or "538": predictions form fivethirtyeight.com. Ignored if prob.matrix is specified.
league	which league: "men" (default) or "women", for prob.source. Ignored if prob.matrix is specified.
year	year of tournament, used for prob.source. Ignored if prob.matrix is specified.
home.teams	character vector of names of teams to whom home-team bias is to be applied (must match name column of pred.pop.[league].[year]). Ignored unless prob.source is "pop" (see ?add.home.bias for details).
num.reps	number of simulations to perform (default is 1)

Value

a 63-by-num.reps matrix storing the simulation outcome, each column encoding the outcome for a single simulation in the following order: seeds 1 through 32 after round 1, seeds 1 through 16 after round 2, seeds 1 through 8 after round 3, seeds 1 through 4 after round 4, seeds 1 and 2 after round 5, and finally seed 1 after round 6 (the champion)

Author(s)

sspowers

Examples

sim.bracket(bracket.empty = bracket.men.2018, prob.source = "538",
  league = "men", year = 2018)

elishayer/mRchmadness documentation built on March 27, 2024, 2:11 p.m.