def recommend(self, objids):
'''Given a system and a ids of recordings or artist,
computes de recommendation following the system specification.
'''
algs, errors = get_recommend_algs()
recs = []
for c in self.components:
if c.s_type == 'sys':
rec = c.recommend(objids)
elif c.s_type == 'alg':
rec = getattr(algs[c.name], self.get_io_type())(objids)
if len(rec) > c.limit:
rec = rec[:c.limit]
recs.append((rec, c.weight))
all_recs = []
last_len = -1
while len(all_recs) < self.limit and len(all_recs)>last_len:
remains = self.limit - len(all_recs)
last_len = len(all_recs)
for r in recs:
for i in r[0][:int(round(r[1] * remains))]:
if i not in all_recs:
all_recs.append(i)
all_recs = list(all_recs)[:self.limit]
ret = all_recs
if self.next_sys:
ret = self.next_sys.recommend(list(all_recs)[:self.limit])
return ret
def get_graphs(self):
'''If type of System is alg, call get_graphs of the algorithm.
'''
algs, errors = get_recommend_algs()
if self.name in algs and self.s_type == 'alg':
return algs[self.name].get_graphs()
