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def calculate_decimal_values(header_present)
  first = true
  field_values = Array.new
  CSV.foreach(@file, :col_sep => ',') do |row|
    #first time through, create an array with the correct
    #number of columns to hold all the possible values for
    #each column
    if first
      row.size.times do
        field_values << Array.new

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def similarity
  @similarity = @person1.keys & @person2.keys
  if @similarity.empty?
    return 0
  end
  
  @sim = 0
  @similarity.each do |movie|
    dif_squared = (@person1[movie] - @person2[movie])**2
    @sim += dif_squared

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def similarity
  @similarity = @person1.keys & @person2.keys
  if @similarity.empty?
    return 0
  end

  sum1, sum2, sum1Sq, sum2Sq, productSum = 0, 0, 0, 0, 0
  @similarity.each do |movie|
    sum1 += @person1[movie]
    sum2 += @person2[movie]

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def similarity
  similarity = 0.0
  n = 0.0
  @person1.each_index do |index|
    if @person1[index] == 0 && @person2[index] == 1
      n += 1
    elsif @person1[index] == 1 && @person2[index] == 0
      n += 1
    elsif @person1[index] == 1 && @person2[index] == 1
      similarity += 1

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def buildClusters(num_clusters)
  @num_clusters = num_clusters
  num_attributes = @data[0].length

  #find bounds of data
  data_boundaries = {}
  for i in 0...num_attributes
    boundaries = []
    boundaries[0] = @data[0][i]
    boundaries[1] = @data[0][i]

trevorwhitney

require 'rubygems'
require 'pry'
require_relative 'layer.rb'

class ArtificialNeuralNetwork
  attr_reader :output, :input

  #initialize with an array containing number of neurons
  #in each layer, including input and output
  def initialize(layers)

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require 'rubygems'
require 'yaml'
require 'active_record'
require 'csv'
require 'pry'

#require the models
Dir['model/*.rb'].each {|file| require_relative file}

class Compare

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require 'rubygems'
require 'yaml'
require 'active_record'
require 'csv'
require 'pry'

#require the models
Dir['model/*.rb'].each {|file| require_relative file}

class Populate

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var gulp = require('gulp'),
  spawn = require('child_process').spawn,
  path = require('path'),
  request = require('request'),
  connect = require('gulp-connect'),
  Promise = require('promise');

var serverPort = 8080,
  liveReloadPort = 35729;

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sealed class Either<out A, out B>
class Left<out A>(val value: A): Either<A, Nothing>()
class Right<out B>(val value: B): Either<Nothing, B>()