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factor_graph_spec.rb
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factor_graph_spec.rb
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# -*- encoding : utf-8 -*-
require File.dirname(__FILE__) + '/../../spec_helper'
describe Saulabs::TrueSkill::FactorGraph do
before :each do
@teams = create_teams
@skill = @teams.first.first
@graph = TrueSkill::FactorGraph.new(@teams, [1,2,3])
end
describe "#update_skills" do
it "should update the mean of the first player in team1 to 29.61452" do
@graph.update_skills
@skill.mean.should be_close(29.61452, tolerance)
end
it "should update the deviation of the first player in team1 to 3.5036" do
@graph.update_skills
@skill.deviation.should be_close(3.5036, tolerance)
end
end
describe "#draw_margin" do
it "should be -0.998291" do
@graph.draw_margin.should be_close(-0.998291, tolerance)
end
end
end
describe Saulabs::TrueSkill::FactorGraph do
before :each do
@teams = [
[
TrueSkill::Rating.new(8.3, 3.1, 0.8, 0.02),
TrueSkill::Rating.new(3.0, 3.1, 0.8, 0.02),
TrueSkill::Rating.new(2.2, 3.2, 0.8, 0.02)
],
[
TrueSkill::Rating.new(25.0, 8.3333, 0.8, 0.02)
]
]
@skill = @teams.last.first
@graph = TrueSkill::FactorGraph.new(@teams, [1,2], :beta => 25.0, :draw_probability => 0.0)
end
it "should do something" do
40.times { TrueSkill::FactorGraph.new(@teams, [1,2], :beta => 15.0, :draw_probability => 0.0).update_skills }
puts "#{@skill.to_s}"
end
end