Class: InciScore::Recognizer

Inherits:
Object
  • Object
show all
Defined in:
lib/inci_score/recognizer.rb,
lib/inci_score/recognizer_rules.rb

Defined Under Namespace

Modules: Rules

Constant Summary collapse

DEFAULT_RULES = 
[Rules::Key, Rules::Levenshtein, Rules::Hazard, Rules::Prefix, Rules::Tokens].freeze
PRECISION_BASE = 
4

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ingredient, rules = DEFAULT_RULES) ⇒ Recognizer

Returns a new instance of Recognizer.



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# File 'lib/inci_score/recognizer.rb', line 11

def initialize(ingredient, rules = DEFAULT_RULES)
  @ingredient = Ingredient.new(ingredient)
  @rules = rules
  @applied = []
  @found = false
end

Instance Attribute Details

#applied ⇒ Object (readonly)

Returns the value of attribute applied.



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# File 'lib/inci_score/recognizer.rb', line 8

def applied
  @applied
end

#found ⇒ Object

Returns the value of attribute found.



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# File 'lib/inci_score/recognizer.rb', line 9

def found
  @found
end

#ingredient ⇒ Object (readonly)

Returns the value of attribute ingredient.



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# File 'lib/inci_score/recognizer.rb', line 8

def ingredient
  @ingredient
end

#rules ⇒ Object (readonly)

Returns the value of attribute rules.



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# File 'lib/inci_score/recognizer.rb', line 8

def rules
  @rules
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/inci_score/recognizer.rb', line 18

def call
  return if ingredient.to_s.empty?
  find_component.tap do |c|
    self.found = true if c
  end
end

#precision ⇒ Object 



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# File 'lib/inci_score/recognizer.rb', line 25

def precision
  return 0.0 unless found
  rule = applied.last
  index = rules.index(rule) + PRECISION_BASE
  ratio = Math.log(index, PRECISION_BASE)
  (100 / ratio).round(2)
end