Class: TextRank::FingerprintOverlap

Inherits:
Object
  • Object
show all
Defined in:
lib/text_rank/fingerprint_overlap.rb

Overview

Determines "overlap" between two fingerprints at each N prefixes

For example,

FingerprintOverlap.new( %w[a b c d], %w[b e a c], ).overlap

=> [ 0, # [a] & (b) have no overlap 1, # [a b] & [b e] have one overlap: b 2, # [a b c] & [b e a] have two overlap: a & b 3, # [a b c d] & [b e a c] have three overlap: a, b, & c ]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(values1, values2) ⇒ FingerprintOverlap

Returns a new instance of FingerprintOverlap.

Raises:

  • (ArgumentError) 


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# File 'lib/text_rank/fingerprint_overlap.rb', line 23

def initialize(values1, values2)
  raise ArgumentError, 'Value size mismatch' if values1.size != values2.size

  @encountered1 = Set.new
  @encountered2 = Set.new
  @overlap_count = 0

  @overlap = determine_overlap(values1, values2)
end

Instance Attribute Details

#overlap ⇒ Object (readonly)

Returns the value of attribute overlap.



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# File 'lib/text_rank/fingerprint_overlap.rb', line 21

def overlap
  @overlap
end