def response(self, usr):
"""
Generate agent response given user input.
Args:
observation (str):
The input to the agent.
Returns:
response (str):
The response generated by the agent.
"""
# print('usr:'******'EOS_U']
u_len = np.array([len(usr_words)])
usr_indices = self.m.reader.vocab.sentence_encode(usr_words)
u_input_np = np.array(usr_indices)[:, np.newaxis]
u_input = cuda_(Variable(torch.from_numpy(u_input_np).long()))
m_idx, z_idx, degree = self.m.m(mode='test', degree_input=None, z_input=None,
u_input=u_input, u_input_np=u_input_np, u_len=u_len,
m_input=None, m_input_np=None, m_len=None,
turn_states=None, **self.kw_ret)
venue = random.sample(degree, 1)[0] if degree else dict()
l = [self.m.reader.vocab.decode(_) for _ in m_idx[0]]
if 'EOS_M' in l:
l = l[:l.index('EOS_M')]
l_origin = []
for word in l:
if 'SLOT' in word:
word = word[:-5]
if word in venue.keys():
value = venue[word]
if value != '?':
l_origin.append(value)
else:
l_origin.append(word)
sys = ' '.join(l_origin)
sys = denormalize(sys)
# print('sys:', sys)
if cfg.prev_z_method == 'separate':
eob = self.m.reader.vocab.encode('EOS_Z2')
if eob in z_idx[0] and z_idx[0].index(eob) != len(z_idx[0]) - 1:
idx = z_idx[0].index(eob)
z_idx[0] = z_idx[0][:idx + 1]
for j, word in enumerate(z_idx[0]):
if word >= cfg.vocab_size:
z_idx[0][j] = 2 # unk
prev_z_input_np = pad_sequences(z_idx, cfg.max_ts, padding='post', truncating='pre').transpose((1, 0))
prev_z_len = np.array([len(_) for _ in z_idx])
prev_z_input = cuda_(Variable(torch.from_numpy(prev_z_input_np).long()))
self.kw_ret['prev_z_len'] = prev_z_len
self.kw_ret['prev_z_input'] = prev_z_input
self.kw_ret['prev_z_input_np'] = prev_z_input_np
return sys
def greedy_decode(self, pz_dec_outs, u_enc_out, m_tm1, u_input_np,
last_hidden, degree_input, bspan_index):
decoded = []
bspan_index_np = pad_sequences(bspan_index).transpose((1, 0))
for t in range(self.max_ts):
proba, last_hidden, _ = self.m_decoder(pz_dec_outs, u_enc_out,
u_input_np, m_tm1,
degree_input, last_hidden,
bspan_index_np)
proba = torch.cat((proba[:, :2], proba[:, 3:]), 1)
mt_proba, mt_index = torch.topk(proba, 1) # [B,1]
mt_index.add_(mt_index.ge(2).long())
mt_index = mt_index.data.view(-1)
decoded.append(mt_index.clone())
for i in range(mt_index.size(0)):
if mt_index[i] >= cfg.vocab_size:
mt_index[i] = 2 # unk
m_tm1 = cuda_(Variable(mt_index).view(1, -1))
decoded = torch.stack(decoded, dim=0).transpose(0, 1)
decoded = list(decoded)
return [list(_) for _ in decoded]
def predict(self, usr, kw_ret):
def z2degree(gen_z):
gen_bspan = self.reader.vocab.sentence_decode(gen_z, eos='EOS_Z2')
constraint_request = gen_bspan.split()
constraints = constraint_request[:constraint_request.index('EOS_Z1')] if 'EOS_Z1' \
in constraint_request else constraint_request
for j, ent in enumerate(constraints):
constraints[j] = ent.replace('_', ' ')
degree = self.reader.db_search(constraints)
degree_input_list = self.reader._degree_vec_mapping(len(degree))
degree_input = cuda_(
Variable(torch.Tensor(degree_input_list).unsqueeze(0)))
return degree, degree_input
self.m.eval()
kw_ret['func'] = z2degree
if 'prev_z_input_np' in kw_ret:
kw_ret['prev_z_len'] = np.array(kw_ret['prev_z_len'])
kw_ret['prev_z_input_np'] = np.array(kw_ret['prev_z_input_np'])
kw_ret['prev_z_input'] = cuda_(
Variable(torch.Tensor(kw_ret['prev_z_input_np']).long()))
usr = word_tokenize(usr.lower())
usr_words = usr + ['EOS_U']
u_len = np.array([len(usr_words)])
usr_indices = self.reader.vocab.sentence_encode(usr_words)
u_input_np = np.array(usr_indices)[:, np.newaxis]
u_input = cuda_(Variable(torch.from_numpy(u_input_np).long()))
m_idx, z_idx, degree = self.m(mode='test',
degree_input=None,
z_input=None,
u_input=u_input,
u_input_np=u_input_np,
u_len=u_len,
m_input=None,
m_input_np=None,
m_len=None,
turn_states=None,
**kw_ret)
venue = random.sample(degree, 1)[0] if degree else dict()
l = [self.reader.vocab.decode(_) for _ in m_idx[0]]
if 'EOS_M' in l:
l = l[:l.index('EOS_M')]
l_origin = []
for word in l:
if 'SLOT' in word:
word = word[:-5]
if word in venue.keys():
value = venue[word]
if value != '?':
l_origin.append(value.replace(' ', '_'))
else:
l_origin.append(word)
sys = ' '.join(l_origin)
kw_ret['sys'] = sys
if cfg.prev_z_method == 'separate':
eob = self.reader.vocab.encode('EOS_Z2')
if eob in z_idx[0] and z_idx[0].index(eob) != len(z_idx[0]) - 1:
idx = z_idx[0].index(eob)
z_idx[0] = z_idx[0][:idx + 1]
for j, word in enumerate(z_idx[0]):
if word >= cfg.vocab_size:
z_idx[0][j] = 2 #unk
prev_z_input_np = pad_sequences(z_idx,
cfg.max_ts,
padding='post',
truncating='pre').transpose((1, 0))
prev_z_len = np.array([len(_) for _ in z_idx])
kw_ret['prev_z_len'] = prev_z_len.tolist()
kw_ret['prev_z_input_np'] = prev_z_input_np.tolist()
if 'prev_z_input' in kw_ret:
del kw_ret['prev_z_input']
del kw_ret['func']
return kw_ret
def _convert_batch(self, py_batch, prev_z_py=None):
u_input_py = py_batch['user']
u_len_py = py_batch['u_len']
kw_ret = {}
if cfg.prev_z_method == 'concat' and prev_z_py is not None:
for i in range(len(u_input_py)):
eob = self.reader.vocab.encode('EOS_Z2')
if eob in prev_z_py[i] and prev_z_py[i].index(eob) != len(
prev_z_py[i]) - 1:
idx = prev_z_py[i].index(eob)
u_input_py[i] = prev_z_py[i][:idx + 1] + u_input_py[i]
else:
u_input_py[i] = prev_z_py[i] + u_input_py[i]
u_len_py[i] = len(u_input_py[i])
for j, word in enumerate(prev_z_py[i]):
if word >= cfg.vocab_size:
prev_z_py[i][j] = 2 #unk
elif cfg.prev_z_method == 'separate' and prev_z_py is not None:
for i in range(len(prev_z_py)):
eob = self.reader.vocab.encode('EOS_Z2')
if eob in prev_z_py[i] and prev_z_py[i].index(eob) != len(
prev_z_py[i]) - 1:
idx = prev_z_py[i].index(eob)
prev_z_py[i] = prev_z_py[i][:idx + 1]
for j, word in enumerate(prev_z_py[i]):
if word >= cfg.vocab_size:
prev_z_py[i][j] = 2 #unk
prev_z_input_np = pad_sequences(prev_z_py,
cfg.max_ts,
padding='post',
truncating='pre').transpose((1, 0))
prev_z_len = np.array([len(_) for _ in prev_z_py])
prev_z_input = cuda_(
Variable(torch.from_numpy(prev_z_input_np).long()))
kw_ret['prev_z_len'] = prev_z_len
kw_ret['prev_z_input'] = prev_z_input
kw_ret['prev_z_input_np'] = prev_z_input_np
degree_input_np = np.array(py_batch['degree'])
u_input_np = pad_sequences(u_input_py,
cfg.max_ts,
padding='post',
truncating='pre').transpose((1, 0))
z_input_np = pad_sequences(py_batch['bspan'],
padding='post').transpose((1, 0))
m_input_np = pad_sequences(py_batch['response'],
cfg.max_ts,
padding='post',
truncating='post').transpose((1, 0))
u_len = np.array(u_len_py)
m_len = np.array(py_batch['m_len'])
degree_input = cuda_(
Variable(torch.from_numpy(degree_input_np).float()))
u_input = cuda_(Variable(torch.from_numpy(u_input_np).long()))
z_input = cuda_(Variable(torch.from_numpy(z_input_np).long()))
m_input = cuda_(Variable(torch.from_numpy(m_input_np).long()))
kw_ret['z_input_np'] = z_input_np
return u_input, u_input_np, z_input, m_input, m_input_np,u_len, m_len, \
degree_input, kw_ret
def interact(self):
def z2degree(gen_z):
gen_bspan = self.reader.vocab.sentence_decode(gen_z, eos='EOS_Z2')
constraint_request = gen_bspan.split()
constraints = constraint_request[:constraint_request.index('EOS_Z1')] if 'EOS_Z1' \
in constraint_request else constraint_request
for j, ent in enumerate(constraints):
constraints[j] = ent.replace('_', ' ')
degree = self.reader.db_search(constraints)
degree_input_list = self.reader._degree_vec_mapping(len(degree))
degree_input = cuda_(
Variable(torch.Tensor(degree_input_list).unsqueeze(0)))
return degree, degree_input
def denormalize(uttr):
uttr = uttr.replace(' -s', 's')
uttr = uttr.replace(' -ly', 'ly')
uttr = uttr.replace(' -er', 'er')
return uttr
self.m.eval()
print('Start interaction.')
kw_ret = dict({'func': z2degree})
while True:
usr = input('usr: '******'END':
break
if usr == 'RESET':
kw_ret = dict({'func': z2degree})
continue
usr = word_tokenize(usr.lower())
usr_words = usr + ['EOS_U']
u_len = np.array([len(usr_words)])
usr_indices = self.reader.vocab.sentence_encode(usr_words)
u_input_np = np.array(usr_indices)[:, np.newaxis]
u_input = cuda_(Variable(torch.from_numpy(u_input_np).long()))
m_idx, z_idx, degree = self.m(mode='test',
degree_input=None,
z_input=None,
u_input=u_input,
u_input_np=u_input_np,
u_len=u_len,
m_input=None,
m_input_np=None,
m_len=None,
turn_states=None,
**kw_ret)
venue = random.sample(degree, 1)[0] if degree else dict()
l = [self.reader.vocab.decode(_) for _ in m_idx[0]]
if 'EOS_M' in l:
l = l[:l.index('EOS_M')]
l_origin = []
for word in l:
if 'SLOT' in word:
word = word[:-5]
if word in venue.keys():
value = venue[word]
if value != '?':
l_origin.append(value)
else:
l_origin.append(word)
sys = ' '.join(l_origin)
sys = denormalize(sys)
print('sys:', sys)
if cfg.prev_z_method == 'separate':
eob = self.reader.vocab.encode('EOS_Z2')
if eob in z_idx[0] and z_idx[0].index(eob) != len(
z_idx[0]) - 1:
idx = z_idx[0].index(eob)
z_idx[0] = z_idx[0][:idx + 1]
for j, word in enumerate(z_idx[0]):
if word >= cfg.vocab_size:
z_idx[0][j] = 2 #unk
prev_z_input_np = pad_sequences(z_idx,
cfg.max_ts,
padding='post',
truncating='pre').transpose(
(1, 0))
prev_z_len = np.array([len(_) for _ in z_idx])
prev_z_input = cuda_(
Variable(torch.from_numpy(prev_z_input_np).long()))
kw_ret['prev_z_len'] = prev_z_len
kw_ret['prev_z_input'] = prev_z_input
kw_ret['prev_z_input_np'] = prev_z_input_np