Class: Coopy::IndexPair

Inherits:
Object
  • Object
show all
Defined in:
lib/coopy/index_pair.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ IndexPair

Returns a new instance of IndexPair.



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# File 'lib/coopy/index_pair.rb', line 4

def initialize
  @ia = Index.new
  @ib = Index.new
  @quality = 0
end

Instance Method Details

#add_column(i) ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 10

def add_column(i)
  @ia.add_column i
  @ib.add_column i
end

#add_columns(ca, cb) ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 15

def add_columns(ca, cb)
  @ia.add_column ca
  @ib.add_column cb
end

#get_quality ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 66

def get_quality
  @quality
end

#get_top_freq ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 62

def get_top_freq
    [@ib.top_freq, @ia.top_freq].max
end

#index_tables(a, b) ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 20

def index_tables(a, b)
  @ia.index_table a
  @ib.index_table b
  # calculate
  #   P(present and unique within a AND present and unique with b)
  #     for rows in a
  good = 0
  @ia.items.keys.each do |key|
    item_a = @ia.items[key]
    spot_a = item_a.lst.length
    item_b = @ib.items[key]
    spot_b = 0;
    spot_b = item_b.lst.length if item_b
    if spot_a == 1 && spot_b == 1
      good += 1
    end
  end
  @quality = good / [1.0,a.height].max
end

#query_by_content(row) ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 52

def query_by_content(row)
  ka = @ia.to_key_by_content(row)
  query_by_key ka
end

#query_by_key(ka) ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 40

def query_by_key(ka)
  result = CrossMatch.new
  result.item_a = @ia.items[ka]
  result.item_b = @ib.items[ka]
  result.spot_a = result.spot_b = 0
  if ka != ""
    result.spot_a = result.item_a.lst.length if result.item_a
    result.spot_b = result.item_b.lst.length if result.item_b
  end
  result
end

#query_local(row) ⇒ Object 



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# File 'lib/coopy/index_pair.rb', line 57

def query_local(row)
  ka = @ia.to_key(@ia.get_table,row)
  query_by_key ka
end