# Lib imports

import recommendations, time

# Function's execution

t1 = time.time()

prefs=recommendations.load_movie_lens()

t2 = time.time()

print "Recomendations: {}".format(recommendations.get_recommendations(prefs,'87')[0:30])

t3 = time.time()

itemsim=recommendations.calculate_similar_items(prefs,50)

t4 = time.time()

print "Recommended items: {}".format(recommendations.get_recommended_items(prefs,itemsim,'87')[0:30])

t5 = time.time()

print "\nExecution times"

print "-----------------"

print "Load dataset: {} seconds".format(t2-t1)

print "User based filtering: {} seconds".format(t3-t2)

print "Calculate similar item: {} seconds".format(t4-t3)

print "Item based filtering: {} seconds".format(t5-t4)