0x2620/dd-re
2
0
Fork 0
Code Issues 4 Pull requests Releases Wiki Activity

update recommendation engine

Browse source
This commit is contained in:
rlx 2018-01-22 12:55:02 +01:00
parent bc536d93fd
commit cecd4f770f
1 changed files with 25 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
recommendation_engine.py
View file

@ -32,6 +32,21 @@ class Engine:
return clips[index:] + clips[:index - 1]
def get_videos(self, user):
channels = {'keywords': 7, 'screenings': 7, 'random': 2}
sliders = {'dau': -1, 'physics': 0, 'sex': 1}
# For each playlist, compute keyword score
score = {}
for playlist in self.playlists:
score[playlist['name']] = random.random()
for tag in [tag for tag in playlist['tags'] if tag in sliders]:
score[playlist['name']] += sliders[tag]
# Select highest scoring playlists
playlists = sorted(
self.playlists,
key=lambda playlist: -score[playlist['name']]
)
videos = playlists[:channels['keywords']]
playlists = playlists[channels['keywords']:]
# Count tags for the user
count = {}
for event in user['events']:
@ -39,23 +54,22 @@ class Engine:
count[event['data']['product']] = count.get(
event['data']['product'], 0
) + 1
score = {}
# For each tag in playlist, increment score by count
for playlist in self.playlists:
for playlist in playlists:
score[playlist['name']] = random.random()
for tag in playlist['tags']:
for tag in [tag for tag in playlist['tags'] if tag not in sliders]:
score[playlist['name']] += count.get(tag, 0)
# Select 16 highest scoring playlists
playlists = sorted(
self.playlists,
# Select highest scoring playlists
videos += sorted(
playlists,
key=lambda playlist: -score[playlist['name']]
)[:16]
)[:16 - channels['keywords']]
# Shuffle playlists (randomize layout) and shift clips (randomize start)
random.shuffle(playlists)
random.shuffle(videos)
return [{
'clips': self._shift_clips(playlist['clips']),
'name': playlist['name']
} for playlist in playlists]
'clips': self._shift_clips(video['clips']),
'name': video['name']
} for video in videos]
def update(self):
# Get all storylines with tags