Class: Saulabs::TrueSkill::Rating

Inherits:
Gauss::Distribution show all
Defined in:
lib/saulabs/trueskill/rating.rb

Instance Attribute Summary collapse

Attributes inherited from Gauss::Distribution

#deviation, #mean, #precision, #precision_mean, #variance

Instance Method Summary collapse

Methods inherited from Gauss::Distribution

#*, #+, #-, #/, #==, absolute_difference, cumulative_distribution_function, #equals, erf, inv_erf, log_product_normalization, log_ratio_normalization, probability_density_function, quantile_function, #replace, standard, #to_s, #value_at, with_deviation, with_precision, with_variance

Constructor Details

#initialize(mean, deviation, activity = 1.0, tau = 25/300.0) ⇒ Rating

Returns a new instance of Rating.



10
11
12
13
14
15
 
# File 'lib/saulabs/trueskill/rating.rb', line 10

def initialize(mean, deviation, activity = 1.0, tau = 25/300.0)
  super(mean, deviation)
  @activity = activity
  @tau = tau
  @tau_squared = @tau**2
end

Instance Attribute Details

#activity ⇒ Object

Returns the value of attribute activity.



7
8
9
 
# File 'lib/saulabs/trueskill/rating.rb', line 7

def activity
  @activity
end

#tau ⇒ Object

Returns the value of attribute tau.



8
9
10
 
# File 'lib/saulabs/trueskill/rating.rb', line 8

def tau
  @tau
end

#tau_squared ⇒ Object (readonly)

Returns the value of attribute tau_squared.



8
9
10
 
# File 'lib/saulabs/trueskill/rating.rb', line 8

def tau_squared
  @tau_squared
end