Class: LightModels::CountingMap

Inherits:
Object
  • Object
show all
Defined in:
lib/lightmodels/stats.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CountingMap

Returns a new instance of CountingMap.



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# File 'lib/lightmodels/stats.rb', line 7

def initialize
	@map = {}
	@sum_values = 0
end

Instance Method Details

#each(&block) ⇒ Object 



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# File 'lib/lightmodels/stats.rb', line 28

def each(&block)
	@map.each(&block)
end

#inc(key) ⇒ Object 



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# File 'lib/lightmodels/stats.rb', line 12

def inc(key)
	@map[key] = 0 unless @map[key]
	@map[key] = @map[key]+1
	@sum_values += 1
end

#n_values ⇒ Object 



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# File 'lib/lightmodels/stats.rb', line 36

def n_values
	@map.count
end

#p(key) ⇒ Object

number of times the value appeared divived by total frequency



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# File 'lib/lightmodels/stats.rb', line 24

def p(key)
	@map[key].to_f/total_frequency.to_f
end

#total_frequency ⇒ Object 



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# File 'lib/lightmodels/stats.rb', line 32

def total_frequency
	@sum_values
end

#value(key) ⇒ Object 



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# File 'lib/lightmodels/stats.rb', line 18

def value(key)
	@map[key] = 0 unless @map[key]
	@map[key]
end