Module: Freql::CB

Defined in:
lib/freql/cb.rb

Class Method Summary collapse

Class Method Details

.calc_cb(occurances, total) ⇒ Object 



45
46
47
 
# File 'lib/freql/cb.rb', line 45

def calc_cb occurances, total
  Math.log10(occurances / total.to_f) * 100.0
end

.cb_to_fpbw(cb) ⇒ Object 



38
39
40
 
# File 'lib/freql/cb.rb', line 38

def cb_to_fpbw cb
  (10.00 ** (-cb.abs / 100.00)) * 1000000000
end

.cb_to_fpmw(cb) ⇒ Object 



35
36
37
 
# File 'lib/freql/cb.rb', line 35

def cb_to_fpmw cb
  (10.00 ** (-cb.abs / 100.00)) * 1000000
end

.cb_to_fq(cb) ⇒ Object 



32
33
34
 
# File 'lib/freql/cb.rb', line 32

def cb_to_fq cb
  10.00 ** (-cb.abs / 100.00)
end

.cb_to_zipf(cb) ⇒ Object 



41
42
43
 
# File 'lib/freql/cb.rb', line 41

def cb_to_zipf cb
  (-cb.abs + 900.00) / 100.00
end