Setting_up_Mahout_on_Mac_OSX.java

# brew install mahout
# export MAHOUT_DIR="/usr/local/Cellar/mahout/0.8/"
puts "#{ENV['MAHOUT_DIR']}libexec/*.jar"
Dir.glob("#{ENV['MAHOUT_DIR']}/libexec/*.jar").each { |d| require d }

MahoutFile = org.apache.mahout.cf.taste.impl.model.file
model = MahoutFile.FileDataModel.new(java.io.File.new("data.csv"))

MahoutSimilarity = org.apache.mahout.cf.taste.impl.similarity
similarity = MahoutSimilarity.TanimotoCoefficientSimilarity.new(model)

MahoutNeighborhood = org.apache.mahout.cf.taste.impl.neighborhood
neighborhood = MahoutNeighborhood.NearestNUserNeighborhood.new(5, similarity, model)

MahoutRecommender = org.apache.mahout.cf.taste.impl.recommender
recommender = MahoutRecommender.GenericBooleanPrefUserBasedRecommender.new(model, neighborhood, similarity)
recommendations = recommender.recommend(8, 5)
puts recommendations

# Data set: Save as data.csv
# 4	1
# 7	2
# 4	4
# 1	4
# 4	3
# 8	1
# 8	3
# 4	5
# 4	6
# 6	6