8.rb

def word_weight(word)
  case word
  when "batter"
    0.0
  when /\Ab[ao]ttle\z/
    0.0
  else
    1.0
  end
end

Mastico::Query.new(fields: [:author], query: "Botticello", word_weight: method(:word_weight)).apply(chewy_query).load.to_a