forked from SiriusXT/MAC
-
Notifications
You must be signed in to change notification settings - Fork 0
/
MAC.py
756 lines (621 loc) · 32.4 KB
/
MAC.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
apath = r'UI-AS-id.txt'
aspect_feat_path = r'./BERT/aspect.pkl'
sentiment_feat_path = r'./BERT/sentiment.pkl'
dataset_name = 'Arts_Crafts_and_Sewing_5'
dataset_name_path = './data/Arts_Crafts_and_Sewing_5/Arts_Crafts_and_Sewing_5.json'
import argparse
import time
import dgl.function as fn
import numpy as np
from util import *
import torch
import torch.nn.functional as F
import dgl
from load_data import *
from util import *
import random
import ast
from tqdm import tqdm, trange
import json
from abc import ABC
import pickle
os.environ["CUDA_LAUNCH_BLOCKING"] = '1'
os.environ["CUBLAS_WORKSPACE_CONFIG"] = ":4096:8"
def seed_everything(seed):
os.environ["PYTHONHASHSEED"] = str(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
np.random.seed(seed)
random.seed(seed)
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.cuda.manual_seed_all(seed)
dgl.random.seed(seed)
torch.use_deterministic_algorithms(True)
seed_everything(2024)
class Data(object):
def __init__(self, dataset_name, dataset_path, device, review_fea_size):
self._device = device
self._review_fea_size = review_fea_size
sent_train_data, sent_valid_data, sent_test_data, _, _, dataset_info = load_sentiment_data(dataset_path)
self.remove_users = []
self._num_user = dataset_info["user_size"]
self._num_item = dataset_info["item_size"]
review_feat_path = f'./checkpoint/{dataset_name}/BERT-Whitening/bert-base-uncased_sentence_vectors_dim_{review_fea_size}.pkl'
self.train_review_feat = torch.load(review_feat_path)
self.review_feat_updated = {}
for key, value in self.train_review_feat.items():
self.review_feat_updated[(key[0], key[1] + self._num_user)] = value
self.review_feat_updated[(key[1] + self._num_user, key[0])] = value
def process_sent_data(info):
user_id = info["user_id"].to_list()
item_id = [int(i) + self._num_user for i in info["item_id"].to_list()]
rating = info["rating"].to_list()
return user_id, item_id, rating
self.train_datas = process_sent_data(sent_train_data)
self.valid_datas = process_sent_data(sent_valid_data)
self.test_datas = process_sent_data(sent_test_data)
self.possible_rating_values = np.unique(self.train_datas[2])
self.user_item_rating = {}
def _generate_train_pair_value(data: tuple):
user_id, item_id, rating = np.array(data[0], dtype=np.int64), np.array(data[1], dtype=np.int64), \
np.array(data[2], dtype=np.int64)
rating_pairs = (user_id, item_id)
rating_pairs_rev = (item_id, user_id)
rating_pairs = np.concatenate([rating_pairs, rating_pairs_rev], axis=1)
rating_values = np.concatenate([rating, rating],
axis=0)
for i in range(len(rating)):
uid, iid = user_id[i], item_id[i]
if uid not in self.user_item_rating:
self.user_item_rating[uid] = []
self.user_item_rating[uid].append((iid, rating[i]))
return rating_pairs, rating_values
def _generate_test_pair_value(data: tuple):
user_id, item_id, rating = data[0], data[1], data[2]
rating_pairs = (np.array(user_id, dtype=np.int64),
np.array(item_id, dtype=np.int64))
rating_values = np.array(rating, dtype=np.float32)
return rating_pairs, rating_values
print('Generating train/valid/test data.\n')
self.train_rating_pairs, self.train_rating_values = _generate_train_pair_value(self.train_datas)
self.valid_rating_pairs, self.valid_rating_values = _generate_test_pair_value(self.valid_datas)
self.test_rating_pairs, self.test_rating_values = _generate_test_pair_value(self.test_datas)
# generate train_review_pairs
self.train_review_pairs = []
for idx in range(len(self.train_rating_values)):
u, i = self.train_rating_pairs[0][idx], self.train_rating_pairs[1][idx]
review = self.review_feat_updated[(u, i)].numpy()
self.train_review_pairs.append(review)
self.train_review_pairs = np.array(self.train_review_pairs)
print('Generating train graph.\n')
self.train_enc_graph = self._generate_enc_graph(self.train_rating_pairs, self.train_rating_values)
def _generate_enc_graph(self, rating_pairs, rating_values):
record_size = rating_pairs[0].shape[0]
review_feat_list = [self.review_feat_updated[(rating_pairs[0][x], rating_pairs[1][x])] for x in
range(record_size)]
review_feat_list = torch.stack(review_feat_list).to(torch.float32)
rating_row, rating_col = rating_pairs
# apath = r'X:\workspace\datasets\Amazon\@aspect\office\ASTs2id.txt'
with open(apath, 'r') as f:
data = f.read()
aspect_sentiment = {}
# tmp=[]
for line in data.split("\n"):
if line == "": continue
line = line.split("####")
id, aspect = line[0], line[1]
if aspect == '{}': continue
id = ast.literal_eval(id) # [int(x) for x in id[1:-1].split(",")]
aspect = ast.literal_eval(aspect)
# tmp+=list(aspect.keys())
if tuple(id) not in aspect_sentiment:
aspect_sentiment[tuple(id)] = aspect
else:
for a, sjDict in aspect.items(): # {2: {2: 0, 3: 0}}
for s, j in sjDict.items():
if a in aspect_sentiment[tuple(id)]: # {2: {2: 0, 3: 0}}
if s not in aspect_sentiment[tuple(id)][a]:
aspect_sentiment[tuple(id)][a][s] = j
else:
pass
else:
aspect_sentiment[tuple(id)][a] = sjDict
continue
all_aspect = []
for ll in [list(x.keys()) for x in list(aspect_sentiment.values())]:
all_aspect += ll
sentiment_feat = torch.load(sentiment_feat_path)
num_nodes_dict = {"user": self._num_user, "item": self._num_item,
"aspect": len(set(all_aspect)), "review": len(self.train_datas[0])}
# for i in len(self.train_datas[0]):
# u,i,s=self.train_datas[0][i],self.train_datas[1][i],self.train_datas[2][i]
rrow = self.train_datas[0]
rcol = [x - self._num_user for x in self.train_datas[1]]
graph_data = {}
graph_data[("user", "review", "item")] = (rrow, rcol)
graph_data[("item", "review_r", "user")] = (rcol, rrow)
aurow = []
aucol = []
airow = []
aicol = []
aurow5 = []
aucol5 = []
au5s = []
airow5 = []
aicol5 = []
ai5s = []
su = []
si = []
ju = []
ji = []
sus = []
sis = []
a2r1 = []
a2r2 = []
a2rs = []
# a2rj = []
###
for x in trange(len(rrow)):
# if self.train_datas[2][x]!=5:continue
if (rrow[x], rcol[x]) in aspect_sentiment:
score = self.train_datas[2][x]
for a, v in aspect_sentiment[(rrow[x], rcol[x])].items():
# a2r1 += [a]
# a2r2 += [x]
aurow += [a]
aucol += [rrow[x]]
sus += [score]
airow += [a]
aicol += [rcol[x]]
if True: # score == 5:
for s, j in v.items():
# if (a,s) not in aurow5:
aurow5 += [(a, s)]
aucol5 += [rrow[x]]
au5s += [s]
airow5 += [(a, s)]
aicol5 += [rcol[x]]
ai5s += [s]
sis += [score]
a2rs_temp = []
su_temp = []
for s, j in v.items():
a2rs_temp += [sentiment_feat[s]]
su_temp += [sentiment_feat[s]]
a2rs_temp = torch.mean(torch.stack(a2rs_temp, 0), 0)
su_temp = torch.mean(torch.stack(su_temp, 0), 0)
a2rs += [a2rs_temp]
su += [su_temp]
si += [su_temp]
else:
pass # print("(rrow[x], rcol[x]) not in aspect_sentiment")
def gen(rrow, rcol, au5s): # user aspect
u_i = {}
i_u = {}
u_i_s = {}
for i in trange(len(rrow)):
if rrow[i] not in u_i:
u_i[rrow[i]] = [rcol[i]]
# u_i_s[rrow[i]] = [rcol[i]]
else:
u_i[rrow[i]] += [rcol[i]]
if rcol[i][0] not in i_u:
i_u[rcol[i][0]] = [rrow[i]]
else:
i_u[rcol[i][0]] += [rrow[i]]
urow, ucol, urc = [], [], [] # u-u
uiud = {}
uiud_num = {}
for u1 in tqdm(u_i.keys()):
for u12 in u_i[u1]:
for u2 in i_u[u12[0]]:
if u1 == u2:
continue
if u1 not in uiud.keys():
uiud[u1] = {u2: [list(u12) + [u_i[u2][[x[0] for x in u_i[u2]].index(u12[0])][1]]]}
uiud_num[u1] = {u2: 1}
else:
if len(uiud[u1]) > 500:
break
if u2 not in uiud[u1].keys():
uiud[u1][u2] = [list(u12) + [u_i[u2][[x[0] for x in u_i[u2]].index(u12[0])][1]]]
uiud_num[u1][u2] = 1
else:
if u12[0] in [x[0] for x in uiud[u1][u2]]:
continue
else:
uiud[u1][u2] += [list(u12) + [u_i[u2][[x[0] for x in u_i[u2]].index(u12[0])][1]]]
uiud_num[u1][u2] += 1
for u1, u2_num in uiud_num.items():
sorted_items = sorted(u2_num.items(), key=lambda item: item[1], reverse=True)
top_5_items = sorted_items[:25]
sorted_dict = dict(top_5_items)
uiud_num[u1] = sorted_dict
for u1, u2u12 in uiud.items():
for u2, u12s in u2u12.items():
if u2 not in uiud_num[u1].keys():
continue
for u12t in u12s:
urow += [u1]
ucol += [u2]
urc += [u12t]
return urow, ucol, urc
def gen2(au_a, au_u, ai_a1, ai_i):
au_a = [x[0] for x in au_a]
ai_a = [x[0] for x in ai_a1]
uia = {}
uia_n = {}
for i in range(len(au_a)):
if au_u[i] not in uia.keys():
uia[au_u[i]] = {ai_i[i]: [au_a[i]]}
uia_n[au_u[i]] = {ai_i[i]: 1}
else:
if ai_i[i] not in uia[au_u[i]].keys():
uia[au_u[i]][ai_i[i]] = [au_a[i]]
uia_n[au_u[i]] = {ai_i[i]: 1}
else:
if au_a[i] in uia[au_u[i]][ai_i[i]]:
continue
else:
uia[au_u[i]][ai_i[i]] += [au_a[i]]
uia_n[au_u[i]][ai_i[i]] += 1
for u1, u2_num in uia_n.items():
sorted_items = sorted(u2_num.items(), key=lambda item: item[1], reverse=True)
top_5_items = sorted_items[:25]
sorted_dict = dict(top_5_items)
uia_n[u1] = sorted_dict
urow, ucol, urc = [], [], []
for u1, u2u12 in uia.items():
for u2, u12s in u2u12.items():
if u2 not in uia_n[u1].keys():
continue
for u12 in u12s:
urow += [u1]
ucol += [u2]
urc += [u12]
return urow, ucol, urc
re = gen(aucol5, aurow5, au5s)
red = {}
red[0] = re[0]
red[1] = re[1]
red[2] = re[2]
import pickle
with open('aucol-aurow-10.pkl', 'wb') as f:
pickle.dump(red, f, pickle.HIGHEST_PROTOCOL)
#
re = gen(aicol5, airow5, au5s)
red = {}
red[0] = re[0]
red[1] = re[1]
red[2] = re[2]
import pickle
with open('aicol-airow-10.pkl', 'wb') as f:
pickle.dump(red, f, pickle.HIGHEST_PROTOCOL)
##
re = gen2(aurow5, aucol5, airow5, aicol5)
red = {}
red[0] = re[0]
red[1] = re[1]
red[2] = re[2]
import pickle
with open('aucol-aicol-10.pkl', 'wb') as f:
pickle.dump(red, f, pickle.HIGHEST_PROTOCOL)
# print("over")
##<<
with open('aucol-aurow-10.pkl', 'rb') as f:
aucol_aurow = pickle.load(f)
with open('aicol-airow-10.pkl', 'rb') as f:
aicol_airow = pickle.load(f)
with open('aucol-aicol-10.pkl', 'rb') as f:
aucol_aicol = pickle.load(f)
graph_data[("user", "user-aspect-user", "user")] = (aucol_aurow[0], aucol_aurow[1])
graph_data[("item", "item-aspect-item", "item")] = (aicol_airow[0], aicol_airow[1])
graph_data[("user", "user-aspect-item", "item")] = (aucol_aicol[0], aucol_aicol[1])
graph_data[("item", "item-aspect-user", "user")] = (aucol_aicol[1], aucol_aicol[0])
graph_data[("aspect", "aspect->user", "user")] = (aurow, aucol)
graph_data[("aspect", "aspect->item", "item")] = (airow, aicol)
# graph_data[("aspect", "aspect->review", "review")] = (a2r1, a2r2)
graph = dgl.heterograph(graph_data, num_nodes_dict)
graph.edges["review"].data["review_feat"] = review_feat_list[:int(len(review_feat_list) / 2)]
graph.edges["review_r"].data["review_feat"] = review_feat_list[:int(len(review_feat_list) / 2)]
graph.edges["review"].data["score"] = torch.tensor([x - 1 for x in self.train_datas[2]]).int()
graph.edges["review_r"].data["score"] = torch.tensor([x - 1 for x in self.train_datas[2]]).int()
graph.edges["aspect->user"].data["sentiment_feat"] = torch.stack(su, 0).float()
graph.edges["aspect->user"].data["score"] = torch.tensor([x - 1 for x in sus]).int()
graph.edges["aspect->item"].data["sentiment_feat"] = torch.stack(si, 0).float()
graph.edges["aspect->item"].data["score"] = torch.tensor([x - 1 for x in sis]).int()
def _calc_norm(x, d):
x = x.numpy().astype('float32')
x[x == 0.] = np.inf
x = torch.FloatTensor(1. / np.power(x, d))
return x.unsqueeze(1)
# ca_sum = _calc_norm(graph.out_degrees(etype='aspect->user'), 0.5)
graph.nodes["user"].data["cur"] = _calc_norm(graph.out_degrees(etype='review'), 0.5)
graph.nodes["item"].data["cir"] = _calc_norm(graph.out_degrees(etype='review_r'), 0.5)
graph.nodes["aspect"].data["cau"] = _calc_norm(graph.out_degrees(etype='aspect->user'), 0.5)
graph.nodes["aspect"].data["cai"] = _calc_norm(graph.out_degrees(etype='aspect->item'), 0.5)
graph.nodes["user"].data["cau"] = _calc_norm(graph.in_degrees(etype='aspect->user'), 0.5)
graph.nodes["item"].data["cai"] = _calc_norm(graph.in_degrees(etype='aspect->item'), 0.5)
graph.edges["user-aspect-user"].data["aspect"] = torch.tensor(aucol_aurow[2])
graph.edges["item-aspect-item"].data["aspect"] = torch.tensor(aicol_airow[2])
graph.edges["user-aspect-item"].data["aspect"] = torch.tensor(aucol_aicol[2])
graph.edges["item-aspect-user"].data["aspect"] = torch.tensor(aucol_aicol[2])
graph.nodes["user"].data["c-user-aspect-user"] = _calc_norm(graph.in_degrees(etype="user-aspect-user"), 0.5)
graph.nodes["user"].data["c-user-aspect-user-r"] = _calc_norm(graph.out_degrees(etype="user-aspect-user"), 0.5)
graph.nodes["item"].data["c-item-aspect-item"] = _calc_norm(graph.in_degrees(etype="item-aspect-item"), 0.5)
graph.nodes["item"].data["c-item-aspect-item-r"] = _calc_norm(graph.out_degrees(etype="item-aspect-item"), 0.5)
graph.nodes["user"].data["c-user-aspect-item"] = _calc_norm(graph.out_degrees(etype="user-aspect-item"), 0.5)
graph.nodes["item"].data["c-user-aspect-item"] = _calc_norm(graph.in_degrees(etype="user-aspect-item"), 0.5)
graph.nodes["item"].data["c-item-aspect-user"] = _calc_norm(graph.out_degrees(etype="item-aspect-user"),0.5)
graph.nodes["user"].data["c-item-aspect-user"] = _calc_norm(graph.in_degrees(etype="item-aspect-user"),0.5)
return graph
def _train_data(self, batch_size=1024):
rating_pairs, rating_values = self.train_rating_pairs, self.train_rating_values
idx = np.arange(0, len(rating_values))
np.random.shuffle(idx)
rating_pairs = (rating_pairs[0][idx], rating_pairs[1][idx])
rating_values = rating_values[idx]
data_len = len(rating_values)
users, items = rating_pairs[0], rating_pairs[1]
u_list, i_list, r_list = [], [], []
review_list = []
n_batch = data_len // batch_size + 1 if data_len != batch_size else 1
for i in range(n_batch):
begin_idx = i * batch_size
end_idx = begin_idx + batch_size
batch_users, batch_items, batch_ratings = users[begin_idx: end_idx], items[begin_idx: end_idx], rating_values[begin_idx: end_idx]
batch_reviews = self.train_review_pairs[begin_idx: end_idx]
u_list.append(torch.LongTensor(batch_users).to('cuda:0'))
i_list.append(torch.LongTensor(batch_items).to('cuda:0'))
r_list.append(torch.LongTensor(batch_ratings - 1).to('cuda:0'))
review_list.append(torch.FloatTensor(batch_reviews).to('cuda:0'))
return u_list, i_list, r_list
def _test_data(self, flag='valid'):
if flag == 'valid':
rating_pairs, rating_values = self.valid_rating_pairs, self.valid_rating_values
else:
rating_pairs, rating_values = self.test_rating_pairs, self.test_rating_values
u_list, i_list, r_list = [], [], []
for i in range(len(rating_values)):
u_list.append(rating_pairs[0][i])
i_list.append(rating_pairs[1][i])
r_list.append(rating_values[i])
u_list = torch.LongTensor(u_list).to('cuda:0')
i_list = torch.LongTensor(i_list).to('cuda:0')
r_list = torch.FloatTensor(r_list).to('cuda:0')
return u_list, i_list, r_list
def config():
parser = argparse.ArgumentParser(description='model')
parser.add_argument('--device', default='0', type=int, help='gpu.')
parser.add_argument('--emb_size', type=int, default=64)
parser.add_argument('--gcn_agg_accum', type=str, default="sum")
parser.add_argument('--gcn_dropout', type=float, default=0.5)
parser.add_argument('--train_max_iter', type=int, default=1000)
parser.add_argument('--train_optimizer', type=str, default="Adam")
parser.add_argument('--train_grad_clip', type=float, default=1.0)
parser.add_argument('--train_lr', type=float, default=0.01)
parser.add_argument('--train_early_stopping_patience', type=int, default=50)
args = parser.parse_args()
args.model_short_name = 'RGC'
args.dataset_name = dataset_name
args.dataset_path = dataset_name_path
args.emb_size = 64
args.emb_dim = 64
args.gcn_dropout = 0.7
args.device = torch.device(args.device)
args.train_max_iter = 1000
args.batch_size = 999999999
return args
gloabl_dropout = 0.7
class GCN(nn.Module):
def __init__(self, params, dropout_rate):
super(GCN, self).__init__()
self.num_users = params.num_users
self.num_items = params.num_items
self.dropout = nn.Dropout(dropout_rate)
self.score = nn.Embedding(5, params.emb_dim * 4)
self.score_r = nn.Embedding(5, params.emb_dim * 4)
# self.score_a = nn.Embedding(5, params.emb_dim*3)
# self.score_a_r = nn.Embedding(5, params.emb_dim*3)
self.review_w = nn.Linear(params.emb_size, params.emb_dim, bias=False)
self.review_r_w = nn.Linear(params.emb_size, params.emb_dim, bias=False)
# self.sentiment_a_r = nn.Linear(params.emb_size, params.emb_dim, bias=False) ###
self.aspect_w = nn.Linear(params.emb_dim, params.emb_dim, bias=False)
self.aspect_w_r = nn.Linear(params.emb_dim, params.emb_dim, bias=False)
self.sentiment_w = nn.Linear(params.emb_dim, params.emb_dim, bias=False) ###
self.sentiment_w_r = nn.Linear(params.emb_dim, params.emb_dim, bias=False)
self.aspect_feat = torch.stack(list(torch.load(aspect_feat_path).
values())).to(torch.float32).cuda()
self.sentiment_feat = torch.stack(list(torch.load(sentiment_feat_path).
values())).to(torch.float32).cuda()
self.s1 = nn.Linear(params.emb_dim, params.emb_dim, bias=False)
self.s2 = nn.Linear(params.emb_dim, params.emb_dim, bias=False)
self.weight = nn.Parameter(torch.Tensor(params.num_users + params.num_items, params.emb_dim))
# self.leaky_relu = nn.LeakyReLU(negative_slope=0.2)
# self.gru1=nn.GRU(params.emb_dim,params.emb_dim)
# self.gru2 = nn.GRU(params.emb_dim, params.emb_dim)
def forward(self, g, feature):
g.nodes["user"].data["fe"], g.nodes["item"].data["fe"] = torch.split(feature, [self.num_users, self.num_items],
dim=0)
g.nodes["aspect"].data["fe"] = self.aspect_w(self.aspect_feat)
g.nodes["aspect"].data["fe1"] = self.aspect_w_r(self.aspect_feat)
g.edges["review"].data["r"] = self.review_w(g.edges["review"].data["review_feat"])
g.edges["review_r"].data["r"] = self.review_r_w(g.edges["review_r"].data["review_feat"])
g.edges["review"].data["s"] = self.score(g.edges["review"].data["score"])
g.edges["review_r"].data["s"] = self.score_r(g.edges["review_r"].data["score"])
g.edges["aspect->user"].data["r"] = self.sentiment_w(g.edges["aspect->user"].data["sentiment_feat"])
g.edges["aspect->item"].data["r"] = self.sentiment_w_r(g.edges["aspect->item"].data["sentiment_feat"])
g.edges["user-aspect-user"].data["r"] = g.nodes["aspect"].data["fe1"][
g.edges["user-aspect-user"].data["aspect"][:, 0]]
g.edges["item-aspect-item"].data["r"] = g.nodes["aspect"].data["fe1"][
g.edges["item-aspect-item"].data["aspect"][:, 0]]
g.edges["user-aspect-item"].data["r"] = g.nodes["aspect"].data["fe1"][
g.edges["user-aspect-item"].data["aspect"]]
g.edges["item-aspect-user"].data["r"] = g.nodes["aspect"].data["fe1"][
g.edges["item-aspect-user"].data["aspect"]]
s1 = self.s1(self.sentiment_feat)
s2 = self.s2(self.sentiment_feat)
g.edges["user-aspect-user"].data["s1"] = s1[g.edges["user-aspect-user"].data["aspect"][:, 1]]
g.edges["item-aspect-item"].data["s1"] = s2[g.edges["item-aspect-item"].data["aspect"][:, 1]]
g.edges["user-aspect-user"].data["s2"] = s1[g.edges["user-aspect-user"].data["aspect"][:, 2]]
g.edges["item-aspect-item"].data["s2"] = s2[g.edges["item-aspect-item"].data["aspect"][:, 2]]
funcs = {
"aspect->user": (lambda edges: {
'm': ((edges.src["fe"] + edges.data["r"])) * self.dropout(edges.src["cau"])}, fn.sum(msg='m', out='h')),
"aspect->item": (lambda edges: {
'm': ((edges.src["fe"] + edges.data["r"])) * self.dropout(edges.src["cai"])}, fn.sum(msg='m', out='h')),
"user-aspect-user": (
lambda edges: {'m': (edges.src["fe"] + edges.data["r"]) * torch.sigmoid(
edges.data["s1"] + edges.data["s2"]) * self.dropout(edges.src["c-user-aspect-user"])},
fn.sum(msg='m', out='h1')),
"item-aspect-item": (
lambda edges: {'m': (edges.src["fe"] + edges.data["r"]) * torch.sigmoid(
edges.data["s1"] + edges.data["s2"]) * self.dropout(edges.src["c-item-aspect-item"])},
fn.sum(msg='m', out='h2')),
"user-aspect-item": (
lambda edges: {'m': (edges.src["fe"] + edges.data["r"]) * self.dropout(edges.src["c-user-aspect-item"])},
fn.sum(msg='m', out='h3')),
"item-aspect-user": (
lambda edges: {'m': (edges.src["fe"] + edges.data["r"]) * self.dropout(edges.src["c-item-aspect-user"])},
fn.sum(msg='m', out='h3')),
}
g.multi_update_all(funcs, "stack")
g.nodes["user"].data["from_a"] = torch.cat([g.nodes["user"].data["h"][:, 0, :] * g.nodes["user"].data["cau"], \
g.nodes["user"].data["h1"][:, 0, :] * g.nodes["user"].data["c-user-aspect-user-r"], \
g.nodes["user"].data["h3"][:, 0, :] * g.nodes["user"].data["c-user-aspect-item"],], -1)
g.nodes["item"].data["from_a"] = torch.cat([g.nodes["item"].data["h"][:, 0, :] * g.nodes["item"].data["cai"], \
g.nodes["item"].data["h2"][:, 0, :] * g.nodes["item"].data["c-item-aspect-item-r"], \
g.nodes["item"].data["h3"][:, 0, :] * g.nodes["item"].data["c-item-aspect-user"],], -1)
def l2inv(x, y):
x_norm = torch.nn.functional.normalize(x, p=2, dim=-1)
y_norm = torch.nn.functional.normalize(y, p=2, dim=-1)
l2_norm_loss = torch.nn.functional.mse_loss(x_norm, y_norm)
return l2_norm_loss
loss = 0
u1, u2, u3, _ = torch.chunk(g.nodes["user"].data["from_a"], 4, dim=-1)
i1, i2, i3, _ = torch.chunk(g.nodes["item"].data["from_a"], 4, dim=-1)
loss += l2inv(u1, u2) + l2inv(u1, u3) + l2inv(u2, u3)
loss += l2inv(i1, i2) + l2inv(i1, i3) + l2inv(i2, i3)
loss = -loss
funcs1 = {
"review": (lambda edges: {'m': (torch.cat([edges.src["from_a"], edges.data["r"]], -1)) * torch.sigmoid(
edges.data["s"]) * self.dropout(edges.src["cur"])}, fn.sum(msg='m', out='h')),
"review_r": (lambda edges: {'m': (torch.cat([edges.src["from_a"], edges.data["r"]], -1)) * torch.sigmoid(
edges.data["s"]) * self.dropout(edges.src["cir"])}, fn.sum(msg='m', out='h')),
}
g.multi_update_all(funcs1, "stack")
g.nodes["user"].data["fe"] = g.nodes["user"].data["h"][:, 0, :] * g.nodes["user"].data["cur"]
g.nodes["item"].data["fe"] = g.nodes["item"].data["h"][:, 0, :] * g.nodes["item"].data["cir"]
return torch.cat([g.nodes["user"].data["fe"], g.nodes["item"].data["fe"]], 0), loss
class Net(nn.Module):
def __init__(self, params):
super(Net, self).__init__()
print("#################", params)
self.weight = nn.Parameter(torch.Tensor(params.num_users + params.num_items, params.emb_dim))
self.encoder = GCN(params, gloabl_dropout)
self.num_user = params.num_users
self.num_item = params.num_items
self.fc_user2 = nn.Linear(params.emb_dim * 4, params.emb_dim * 4)
self.fc_item2 = nn.Linear(params.emb_dim * 4, params.emb_dim * 4)
self.dropout1 = nn.Dropout(0.4) # 0.3)#gloa-bl_dropout)
# self.leaky_relu = nn.LeakyReLU(negative_slope=0.2)
self.predictor1 = nn.Sequential(
nn.Linear(params.emb_dim * 4, params.emb_dim * 4, bias=False),
nn.ReLU(),
nn.Linear(params.emb_dim * 4, 5, bias=False),
)
self.reset_parameters()
def reset_parameters(self):
for p in self.parameters():
if p.dim() > 1:
nn.init.xavier_uniform_(p)
def forward(self, enc_graph_dict, users, items):
feat, loss = self.encoder(enc_graph_dict, self.weight)
u_feat, i_feat = torch.split(feat, [self.num_user, self.num_item], dim=0)
ua = self.fc_user2(self.dropout1(u_feat))
ia = self.fc_item2(self.dropout1(i_feat))
feat = torch.cat([ua, ia], dim=0)
user_embeddings, item_embeddings = feat[users], feat[items]
pred_ratings2 = self.predictor1(user_embeddings * item_embeddings)
return pred_ratings2, loss
def evaluate(args, net, dataset, flag='valid'):
nd_possible_rating_values = torch.FloatTensor([1, 2, 3, 4, 5]).to(args.device)
u_list, i_list, r_list = dataset._test_data(flag=flag)
enc_graph = dataset.train_enc_graph
# graph_aspect=dataset.graph_aspect
net.eval()
with torch.no_grad():
pred_ratings, _ = net(enc_graph, u_list, i_list)
real_pred_ratings = (torch.softmax(pred_ratings, dim=1) *
nd_possible_rating_values.view(1, -1)).sum(dim=1)
u_list = u_list.cpu().numpy()
r_list = r_list.cpu().numpy()
real_pred_ratings = real_pred_ratings.cpu().numpy()
mse = ((real_pred_ratings - r_list) ** 2.).mean()
return mse
def train(params):
dataset = Data(params.dataset_name,
params.dataset_path,
params.device,
params.emb_size,
)
print("Loading data finished.\n")
params.num_users = dataset._num_user
params.num_items = dataset._num_item
params.rating_vals = dataset.possible_rating_values
print(
f'Dataset information:\n \tuser num: {params.num_users}\n\titem num: {params.num_items}\n\ttrain interaction num: {len(dataset.train_rating_values)}\n')
net = Net(params)
net = net.to(params.device)
rating_loss_net = nn.CrossEntropyLoss()
learning_rate = params.train_lr
optimizer = torch.optim.Adam(net.parameters(), lr=learning_rate, weight_decay=1e-6)
print("Loading network finished.\n")
best_test_mse = np.inf
no_better_valid = 0
best_iter = -1
# for r in [1, 2, 3, 4, 5]:
# dataset.train_enc_graph[str(r)] = dataset.train_enc_graph[str(r)].int().to(params.device)
dataset.train_enc_graph = dataset.train_enc_graph.int().to(
params.device)
# dataset.graph_aspect=dataset.graph_aspect.int().to(params.device)
nd_possible_rating_values = torch.FloatTensor([1, 2, 3, 4, 5]).to(params.device)
print("Training and evaluation.")
for iter_idx in range(1, params.train_max_iter):
net.train()
# n_batch = len(dataset.train_rating_values) // params.batch_size + 1
u_list, i_list, r_list = dataset._train_data(batch_size=params.batch_size)
train_mse = 0.
for idx in range(len(r_list)):
batch_user = u_list[idx]
batch_item = i_list[idx]
batch_rating = r_list[idx]
pred_ratings, l2inv = net(dataset.train_enc_graph, batch_user, batch_item)
real_pred_ratings = (torch.softmax(pred_ratings, dim=1) * nd_possible_rating_values.view(1, -1)).sum(dim=1)
loss = rating_loss_net(pred_ratings, batch_rating).mean() + l2inv ##l2inv
optimizer.zero_grad()
loss.backward()
optimizer.step()
train_mse += ((real_pred_ratings - batch_rating - 1) ** 2).sum()
train_mse = train_mse / len(dataset.train_rating_values)
# valid_mse = evaluate(args=params, net=net, dataset=dataset, flag='valid')
test_mse = evaluate(args=params, net=net, dataset=dataset, flag='test')
if test_mse < best_test_mse:
best_test_mse = test_mse
best_iter = iter_idx
no_better_valid = 0
else:
no_better_valid += 1
if no_better_valid > params.train_early_stopping_patience:
print("Early stopping threshold reached. Stop training.")
break
print(
f'Epoch {iter_idx}, Loss={loss:.4f}, Train_MSE={train_mse:.4f}, Valid_MSE={0:.4f}, Test_MSE={test_mse:.4f}')
import datetime
current_time = datetime.datetime.now()
print(current_time)
print(f'Best Iter Idx={best_iter}, Best Test MSE={best_test_mse:.4f}')
if __name__ == '__main__':
config_args = config()
train(config_args)