def evaluate(model, data, dev=False):
model.eval()
labels_list = {}
for step, one_data in enumerate(data):
label = one_data[-1].data.numpy()
predictions = model(one_data[0])
if torch.cuda.is_available(): # run in GPU
pred_label = predictions.cpu().data.numpy()
uc_pairs = one_data[0].cpu().data.numpy()
else:
pred_label = predictions.data.numpy()
uc_pairs = one_data[0].data.numpy()
for n in xrange(len(label)):
try:
labels_list[uc_pairs[n, 0]].append((pred_label[n], label[n]))
except KeyError:
labels_list[uc_pairs[n, 0]] = [(pred_label[n], label[n])]
res_map = cal_map(labels_list)
if dev:
return res_map
else:
res_p1 = cal_precision_N(labels_list, 1)
res_p5 = cal_precision_N(labels_list, 5)
res_ndcg5 = cal_ndcg_all(labels_list, 5)
res_ndcg10 = cal_ndcg_all(labels_list, 10)
return res_map, res_p1, res_p5, res_ndcg5, res_ndcg10
def validate(model, data):
dataloader = DataLoader(data,
batch_size=batch_size,
shuffle=False,
drop_last=False,
num_workers=0)
model.eval()
model.prepare_test()
scorelist = {}
index = 0
for dialog_users, dialog_sentences, dialog_sentence_lens, dialog_lens, indices in dataloader:
dialog_users = dialog_users.cuda(
non_blocking=True) # [batch_size, dialog_len]
dialog_sentences = dialog_sentences.cuda(
non_blocking=True) # [batch_size, dialog_len, sentence_len]
dialog_sentence_lens = dialog_sentence_lens.cuda(
non_blocking=True) # [batch_size, dialog_len]
sample_indices = np.zeros([indices.size(0), 128], dtype=np.int64)
for i in range(len(indices)):
_index = indices[i]
_len = len(data.targets[_index])
sample_set = set()
for j in range(_len):
sample_indices[i, j] = data.targets[_index][j]
sample_set.add(data.targets[_index][j])
for j in range(_len, _len + 100):
while True:
rand_index = random.randint(0, user_num - 1)
if rand_index not in sample_set:
sample_indices[i, j] = rand_index
sample_set.add(rand_index)
break
sample_indices_tensor = torch.from_numpy(sample_indices).cuda()
probs = model(dialog_users, dialog_sentences, dialog_sentence_lens,
dialog_lens, sample_indices_tensor) # [batch_size]
probs = probs.tolist()
for i in range(len(indices)):
temp = []
_index = indices[i]
_len = len(data.targets[_index])
for j in range(_len):
temp.append((probs[i][j], 1))
for j in range(_len, _len + 100):
temp.append((probs[i][j], 0))
scorelist[index] = temp
index += 1
MAP = rank_eval.cal_map(scorelist)
Precision_1 = rank_eval.cal_precision_N(scorelist, 1)
Precision_5 = rank_eval.cal_precision_N(scorelist, 5)
NDCG_10 = rank_eval.cal_ndcg_all(scorelist, 10)
MRR = rank_eval.cal_mrr(scorelist)
print("MAP :", MAP)
print("precision@1 :", Precision_1)
print("precision@5 :", Precision_5)
print("nDCG@10 :", NDCG_10)
print("MRR :", MRR)
return MAP, Precision_1, Precision_5, NDCG_10, MRR
def test_best_model(result_dict, metric):
assert len(result_dict) > 0
best_model_id = 0
best_value = 0
for k in result_dict:
if result_dict[k] > best_value:
best_model_id = k
best_value = result_dict[k]
model = RRN(user_num, vocabulary_size, max_sentence_len)
model.load_state_dict(
torch.load(os.path.join(model_dir, model_prefix + str(best_model_id)),
map_location=torch.device('cuda'))['model_state_dict'])
model.cuda()
test_data = RecommendationData(test_data_file[dataset], 'test',
test_dialogtag_id, username_id, stoi,
max_sentence_len)
dataloader = DataLoader(test_data,
batch_size=batch_size,
shuffle=False,
drop_last=False,
num_workers=0)
model.eval()
model.prepare_test()
scorelist = {}
index = 0
for dialog_users, dialog_sentences, dialog_sentence_lens, dialog_lens, indices in dataloader:
dialog_users = dialog_users.cuda(
non_blocking=True) # [batch_size, dialog_len]
dialog_sentences = dialog_sentences.cuda(
non_blocking=True) # [batch_size, dialog_len, sentence_len]
dialog_sentence_lens = dialog_sentence_lens.cuda(
non_blocking=True) # [batch_size, dialog_len]
sample_indices = np.zeros([indices.size(0), 128], dtype=np.int64)
for i in range(len(indices)):
_index = indices[i]
_len = len(test_data.targets[_index])
sample_set = set()
for j in range(_len):
sample_indices[i, j] = test_data.targets[_index][j]
sample_set.add(test_data.targets[_index][j])
for j in range(_len, _len + 100):
while True:
rand_index = random.randint(0, user_num - 1)
if rand_index not in sample_set:
sample_indices[i, j] = rand_index
sample_set.add(rand_index)
break
sample_indices_tensor = torch.from_numpy(sample_indices).cuda()
probs = model(dialog_users, dialog_sentences, dialog_sentence_lens,
dialog_lens, sample_indices_tensor) # [batch_size]
probs = probs.tolist()
for i in range(len(indices)):
temp = []
_index = indices[i]
_len = len(test_data.targets[_index])
for j in range(_len):
temp.append((probs[i][j], 1))
for j in range(_len, _len + 100):
temp.append((probs[i][j], 0))
scorelist[index] = temp
index += 1
MAP = rank_eval.cal_map(scorelist)
Precision_1 = rank_eval.cal_precision_N(scorelist, 1)
Precision_5 = rank_eval.cal_precision_N(scorelist, 5)
NDCG_10 = rank_eval.cal_ndcg_all(scorelist, 10)
MRR = rank_eval.cal_mrr(scorelist)
print('Best model on ' + metric + ' : ' + model_prefix +
str(best_model_id))
print(metric + ' on validation : ' + str(best_value))
print("MAP :", MAP)
print("precision@1 :", Precision_1)
print("precision@5 :", Precision_5)
print("nDCG@10 :", NDCG_10)
print("MRR :", MRR)
return MAP, Precision_1, Precision_5, NDCG_10, MRR
