class App: def __init__(self): self._app_data = AppData() self._client = predictionio.Client(APP_KEY, 1, API_URL) def run(self): state = "[Main Menu]" prompt = "\n"\ "%s\n"\ "%s\n"\ "Please input selection:\n"\ " 0: Quit application.\n"\ " 1: Get Recommendations from PredictionIO.\n"\ " 2: Display user's data." % (state, '-'*len(state)) while True: print prompt choice = raw_input().lower() if choice == '0': print "\nGood Bye!\n" break elif choice == '1': self.recommend_task(state) elif choice == '2': self.display_user_task(state) else: print '[Error] \'%s\' is not a valid selection.' % choice self._client.close() def recommend_task(self, prev_state): state = prev_state + " / [Get Recommendations]" prompt = "\n"\ "%s\n"\ "%s\n"\ "Please enter user id:" % (state, '-'*len(state)) while True: print prompt choice = raw_input().lower() u = self._app_data.get_user(choice) if u: n = 10 print "[Info] Getting top %s item recommendations for user %s..." % (n, u.uid) try: self._client.identify(u.uid) rec = self._client.get_itemrec_topn(ENGINE_NAME, n) u.rec = rec['pio_iids'] self.display_items(u.rec) except predictionio.ItemRecNotFoundError: print "[Info] Recommendation not found" print "[Info] Go back to previous menu..." break else: print "[Error] invalid user id %s. Go back to previous menu..." % choice break def display_user_task(self, prev_state): state = prev_state + " / [Display User]" prompt = "\n"\ "%s\n"\ "%s\n"\ "Please enter user id:" % (state, '-'*len(state)) while True: print prompt choice = raw_input().lower() u = self._app_data.get_user(choice) if u: print "[Info] User %s:" % u.uid n = 10 topn_rate_actions = self._app_data.get_top_rate_actions(u.uid, n) print "\n[Info] Top %s movies rated by this user:"******"\n[Info] Movies recommended to this user:"******"\n[Info] Go back to previous menu..." break else: print "[Error] invalid user id %s. Go back to previous menu..." % choice break def display_items(self, iids, all_info=False): """print item info for each iid in the list """ if iids: for iid in iids: item = self._app_data.get_item(iid) if item: if all_info: print "[Info] %s" % item else: print "[Info] %s" % item.name else: print "[Error] Invalid item id %s" % iid else: print "[Info] Empty." def display_rate_actions(self, actions): """print iid and rating """ if actions: for a in actions: item = self._app_data.get_item(a.iid) if item: print "[Info] %s, rating = %s" % (item.name, a.rating) else: print "[Error] Invalid item id %s" % a.iid else: print "[Info] Empty." def wait_for_ack(self): prompt = "\nPress enter to continue..." print prompt choice = raw_input().lower()
class App:
def __init__(self):
self._app_data = AppData()
self._client = predictionio.Client(APP_KEY, 1, API_URL)
def run(self):
state = "[Main Menu]"
prompt = "\n"\
"%s\n"\
"%s\n"\
"Please input selection:\n"\
" 0: Quit application.\n"\
" 1: Get personalized recommendation.\n"\
" 2: Display user data.\n"\
" 3: Display movie data.\n"\
" 4: Recommend with multiple movies.\n" % (state, '-'*len(state))
while True:
print prompt
choice = raw_input().lower()
if choice == '0':
print "\nGood Bye!\n"
break
elif choice == '1':
self.recommend_task(state)
elif choice == '2':
self.display_user_task(state)
elif choice == '3':
self.get_similar_movies_task(state)
elif choice == '4':
self.recommend_with_multiple_movies_task(state)
else:
print '[Error] \'%s\' is not a valid selection.' % choice
self._client.close()
def recommend_task(self, prev_state):
state = prev_state + " / [Get Recommendations]"
prompt = "\n"\
"%s\n"\
"%s\n"\
"Please enter user id:" % (state, '-'*len(state))
while True:
print prompt
choice = raw_input().lower()
u = self._app_data.get_user(choice)
if u:
n = 10
print "[Info] Getting top %s item recommendations for user %s..." % (n, u.uid)
try:
self._client.identify(u.uid)
rec = self._client.get_itemrec_topn(ENGINE_NAME, n)
u.rec = rec['pio_iids']
self.display_items(u.rec)
except predictionio.ItemRecNotFoundError:
print "[Info] Recommendation not found"
print "[Info] Go back to previous menu..."
break
else:
print "[Error] invalid user id %s. Go back to previous menu..." % choice
break
def get_similar_movies_task(self, prev_state):
state = prev_state + " / [Get Similar Movies]"
prompt = "\n"\
"%s\n"\
"%s\n"\
"Please enter movie id (eg. 1):" % (state, '-'*len(state))
while True:
print prompt
choice = raw_input().lower()
i = self._app_data.get_item(choice)
if i:
n = 10
self.display_items((i.iid,), all_info=False)
print "\n[Info] People who liked this may also liked..."
try:
rec = self._client.get_itemsim_topn(SIM_ENGINE_NAME, i.iid, n,
{ 'pio_itypes' : i.genres })
self.display_items(rec['pio_iids'], all_info=False)
except predictionio.ItemSimNotFoundError:
print "[Info] Similar movies not found"
print "[Info] Go back to previous menu..."
break
else:
print "[Error] invalid item id %s. Go back to previous menu..." % choice
break
def recommend_with_multiple_movies_task(self, prev_state):
state = prev_state + " / [Recommend with Multiple Movies]"
prompt = "\n"\
"%s\n"\
"%s\n"\
"Please enter comma separated movie ids (eg. 1,2,3):" % (state, '-'*len(state))
while True:
print prompt
choice = raw_input().lower()
viewed_iids = choice.split(",")
viewed_items = map(lambda x : self._app_data.get_item(x), viewed_iids)
viewed_genres = Set()
for i in viewed_items:
if i:
for g in i.genres:
viewed_genres.add(g)
if None not in viewed_items:
n = 10
self.display_items(viewed_iids, all_info=False)
print "\n[Info] Top %s similar movies..." % n
try:
rec = self._client.get_itemsim_topn(SIM_ENGINE_NAME, choice, n,
{ 'pio_itypes' : list(viewed_genres) })
self.display_items(rec['pio_iids'], all_info=False)
except predictionio.ItemSimNotFoundError:
print "[Info] Similar movies not found"
print "[Info] Go back to previous menu..."
break
else:
print "[Error] invalid item id %s. Go back to previous menu..." % choice
break
def display_user_task(self, prev_state):
state = prev_state + " / [Display User]"
prompt = "\n"\
"%s\n"\
"%s\n"\
"Please enter user id:" % (state, '-'*len(state))
while True:
print prompt
choice = raw_input().lower()
u = self._app_data.get_user(choice)
if u:
print "[Info] User %s:" % u.uid
n = 10
topn_rate_actions = self._app_data.get_top_rate_actions(u.uid, n)
print "\n[Info] Top %s movies rated by this user:"******"\n[Info] Getting New Recommendation..."
n = 10
try:
self._client.identify(u.uid)
rec = self._client.get_itemrec_topn(ENGINE_NAME, n)
u.rec = rec['pio_iids']
except predictionio.ItemRecNotFoundError:
print "[Info] Recommendation not found"
print "\n[Info] Movies recommended to this user:"******"\n[Info] Go back to previous menu..."
break
else:
print "[Error] invalid user id %s. Go back to previous menu..." % choice
break
def display_items(self, iids, all_info=False):
"""print item info for each iid in the list
"""
if iids:
for iid in iids:
item = self._app_data.get_item(iid)
if item:
if all_info:
print "[Info] %s" % item
else:
print "[Info] (%s) %s %s %s" % (item.iid, item.name,
item.release_date.strftime("%d-%b-%Y"), item.genres)
else:
print "[Error] Invalid item id %s" % iid
else:
print "[Info] Empty."
def display_rate_actions(self, actions):
"""print iid and rating
"""
if actions:
for a in actions:
item = self._app_data.get_item(a.iid)
if item:
print "[Info] (%s) %s %s %s, rating = %s" % (item.iid, item.name,
item.release_date.strftime("%d-%b-%Y"), item.genres, a.rating)
else:
print "[Error] Invalid item id %s" % a.iid
else:
print "[Info] Empty."
def wait_for_ack(self):
prompt = "\nPress enter to continue..."
print prompt
choice = raw_input().lower()