def test_run(data_path, model_path, n_show=10):
"""
Test function.
Input is training data.
Output have to be the sentence which is correct data in training phase.
:return:
"""
corpus = ConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
print('')
# rebuild seq2seq model
model = Seq2Seq(len(corpus.dic.token2id), feature_num=args.feature_num,
hidden_num=args.hidden_num, batch_size=1, gpu_flg=args.gpu)
serializers.load_hdf5(model_path, model)
# run an interpreter
for num, input_sentence in enumerate(corpus.posts):
id_sequence = input_sentence.copy()
# input_sentence.reverse()
# input_sentence.insert(0, corpus.dic.token2id["<eos>"])
model.initialize() # initialize cell
sentence = model.generate(input_sentence, sentence_limit=len(input_sentence) + 30,
word2id=corpus.dic.token2id, id2word=corpus.dic)
print("teacher : ", " ".join([corpus.dic[w_id] for w_id in id_sequence]))
print("correct :", " ".join([corpus.dic[w_id] for w_id in corpus.cmnts[num]]))
print("-> ", sentence)
print('')
if num == n_show:
break
def show_heatmap(data_path, model_path):
import seaborn
import matplotlib
seaborn.set()
matplotlib.rc('font', family='sans-serif')
# call dictionary class
if args.lang == 'en':
corpus = ConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
elif args.lang == 'ja':
corpus = JaConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
else:
print(
'You gave wrong argument to this system. Check out your argument about languages.'
)
raise ValueError
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
print('')
# rebuild seq2seq model
model = Seq2Seq(len(corpus.dic.token2id),
feature_num=args.feature_num,
hidden_num=args.hidden_num,
label_num=args.label_num,
label_embed_num=args.label_embed,
batch_size=1,
gpu_flg=args.gpu)
serializers.load_hdf5(model_path, model)
# sentiment matrix in the decoder
sentiment_mat = model.dec.le.W.data
cmap = seaborn.diverging_palette(
220, 10, as_cmap=True) # Generate a custom diverging colormap
seaborn.heatmap(sentiment_mat,
cmap=cmap,
center=0,
linewidths=.5,
xticklabels=False
) # square=True, cbar_kws={"orientation": "horizontal"})
plt.xlabel("Dimension (=" + str(sentiment_mat.shape[1]) + ")")
plt.ylabel("Sentiment")
plt.savefig('./data/sentiment_matrix.png')
# encoder embedding matrix
encode_mat = model.enc.xe.W
seaborn.heatmap(encode_mat,
cmap=cmap,
center=0,
linewidths=.5,
xticklabels=False
) # square=True, cbar_kws={"orientation": "horizontal"})
plt.xlabel("Dimension (=" + str(sentiment_mat.shape[1]) + ")")
plt.ylabel("Sentiment")
plt.savefig('./data/sentiment_matrix.png')
def interpreter(data_path, model_path):
"""
Run this function, if you want to talk to seq2seq model.
if you type "exit", finish to talk.
:param data_path: the path of corpus you made model learn
:param model_path: the path of model you made learn
:return:
"""
# call dictionary class
corpus = ConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
print('')
# rebuild seq2seq model
model = Seq2Seq(len(corpus.dic.token2id),
feature_num=args.feature_num,
hidden_num=args.hidden_num,
batch_size=1,
gpu_flg=args.gpu)
serializers.load_hdf5(model_path, model)
# run conversation system
print('The system is ready to run, please talk to me!')
print('( If you want to end a talk, please type "exit". )')
print('')
while True:
print('>> ', end='')
sentence = input()
if sentence == 'exit':
print('See you again!')
break
input_vocab = [
unicodedata.normalize('NFKC', word.lower())
for word in word_tokenize(sentence)
]
input_vocab.reverse()
input_vocab.insert(0, "<eos>")
# convert word into ID
input_sentence = [
corpus.dic.token2id[word] for word in input_vocab
if not corpus.dic.token2id.get(word) is None
]
model.initialize() # initialize cell
sentence = model.generate(input_sentence,
sentence_limit=len(input_sentence) + 30,
word2id=corpus.dic.token2id,
id2word=corpus.dic)
print("-> ", sentence)
print('')
def main():
###########################
#### create dictionary ####
###########################
if os.path.exists('./data/corpus/dictionary.dict'):
corpus = ConvCorpus(file_path=None, batch_size=batchsize)
corpus.load(load_dir='./data/corpus/')
else:
corpus = ConvCorpus(file_path=args.data, batch_size=batchsize)
corpus.save(save_dir='./data/corpus/')
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
######################
#### create model ####
######################
model = Seq2Seq(len(corpus.dic.token2id),
feature_num=feature_num,
hidden_num=hidden_num,
batch_size=batchsize,
gpu_flg=args.gpu)
if args.gpu >= 0:
model.to_gpu()
optimizer = optimizers.Adam(alpha=0.001)
optimizer.setup(model)
optimizer.add_hook(chainer.optimizer.GradientClipping(5))
# optimizer.add_hook(chainer.optimizer.WeightDecay(0.0001))
##########################
#### create ID corpus ####
##########################
input_mat = []
output_mat = []
max_input_ren = max_output_ren = 0
for input_text, output_text in zip(corpus.posts, corpus.cmnts):
# convert to list
input_text.reverse() # encode words in a reverse order
input_text.insert(0, corpus.dic.token2id["<eos>"])
output_text.append(corpus.dic.token2id["<eos>"])
# update max sentence length
max_input_ren = max(max_input_ren, len(input_text))
max_output_ren = max(max_output_ren, len(output_text))
input_mat.append(input_text)
output_mat.append(output_text)
# padding
for li in input_mat:
insert_num = max_input_ren - len(li)
for _ in range(insert_num):
li.insert(0, corpus.dic.token2id['<pad>'])
for li in output_mat:
insert_num = max_output_ren - len(li)
for _ in range(insert_num):
li.append(corpus.dic.token2id['<pad>'])
# create batch matrix
input_mat = np.array(input_mat, dtype=np.int32).T
output_mat = np.array(output_mat, dtype=np.int32).T
# separate corpus into Train and Test
perm = np.random.permutation(len(corpus.posts))
test_input_mat = input_mat[:, perm[0:0 + batchsize]]
test_output_mat = output_mat[:, perm[0:0 + batchsize]]
train_input_mat = input_mat[:, perm[batchsize:]]
train_output_mat = output_mat[:, perm[batchsize:]]
#############################
#### train seq2seq model ####
#############################
accum_loss = 0
train_loss_data = []
test_loss_data = []
for num, epoch in enumerate(range(n_epoch)):
total_loss = test_loss = 0
batch_num = 0
perm = np.random.permutation(len(corpus.posts) - batchsize)
for i in range(0, len(corpus.posts) - batchsize, batchsize):
# select batch data
input_batch = train_input_mat[:, perm[i:i + batchsize]]
output_batch = train_output_mat[:, perm[i:i + batchsize]]
# Encode a sentence
model.initialize() # initialize cell
model.encode(input_batch,
train=True) # encode (output: hidden Variable)
# Decode from encoded context
end_batch = xp.array(
[corpus.dic.token2id["<start>"] for _ in range(batchsize)])
first_words = output_batch[0]
loss, predict_mat = model.decode(end_batch,
first_words,
train=True)
next_ids = first_words
accum_loss += loss
for w_ids in output_batch[1:]:
loss, predict_mat = model.decode(next_ids, w_ids, train=True)
next_ids = w_ids
accum_loss += loss
# learn model
model.cleargrads() # initialize all grad to zero
accum_loss.backward() # back propagation
optimizer.update()
total_loss += float(accum_loss.data)
batch_num += 1
print('Epoch: ', num, 'Batch_num', batch_num,
'batch loss: {:.2f}'.format(float(accum_loss.data)))
accum_loss = 0
else:
# select last batch data
input_batch = test_input_mat
output_batch = test_output_mat
# Encode a sentence
model.initialize() # initialize cell
model.encode(input_batch,
train=True) # encode (output: hidden Variable)
# Decode from encoded context
end_batch = xp.array(
[corpus.dic.token2id["<start>"] for _ in range(batchsize)])
first_words = output_batch[0]
loss, predict_mat = model.decode(end_batch,
first_words,
train=True)
next_ids = xp.argmax(predict_mat.data, axis=1)
test_loss += loss
for w_ids in output_batch[1:]:
loss, predict_mat = model.decode(next_ids, w_ids, train=True)
next_ids = xp.argmax(predict_mat.data, axis=1)
test_loss += loss
# save model and optimizer
if (epoch + 1) % 10 == 0:
print('-----', epoch + 1, ' times -----')
print('save the model and optimizer')
serializers.save_hdf5('data/' + str(epoch) + '.model', model)
serializers.save_hdf5('data/' + str(epoch) + '.state', optimizer)
# display the on-going status
print('Epoch: ', num, 'Train loss: {:.2f}'.format(total_loss),
'Test loss: {:.2f}'.format(float(test_loss.data)))
train_loss_data.append(float(total_loss / batch_num))
test_loss_data.append(float(test_loss.data))
# evaluate a test loss
check_loss = test_loss_data[-10:] # check out the last 10 loss data
end_flg = [
j for j in range(len(check_loss) - 1)
if check_loss[j] < check_loss[j + 1]
]
if len(end_flg) > 7:
print('Probably it is over-fitting. So stop to learn...')
break
# save loss data
with open('./data/loss_train_data.pkl', 'wb') as f:
pickle.dump(train_loss_data, f)
with open('./data/loss_test_data.pkl', 'wb') as f:
pickle.dump(test_loss_data, f)
def interpreter(data_path, model_path):
"""
Run this function, if you want to talk to seq2seq model.
if you type "exit", finish to talk.
:param data_path: the path of corpus you made model learn
:param model_path: the path of model you made learn
:return:
"""
# call dictionary class
if args.lang == 'en':
corpus = ConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
elif args.lang == 'ja':
corpus = JaConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
else:
print(
'You gave wrong argument to this system. Check out your argument about languages.'
)
raise ValueError
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
print('')
# rebuild seq2seq model
model = Seq2Seq(len(corpus.dic.token2id),
feature_num=args.feature_num,
hidden_num=args.hidden_num,
label_num=args.label_num,
label_embed_num=args.label_embed,
batch_size=1,
gpu_flg=args.gpu)
serializers.load_hdf5(model_path, model)
# run conversation system
print('The system is ready to run, please talk to me!')
print('( If you want to end a talk, please type "exit". )')
print('')
while True:
print('>> ', end='')
sentence = input()
if sentence == 'exit':
print('See you again!')
break
# convert to a list
if args.lang == 'en':
input_vocab = [
unicodedata.normalize('NFKC', word.lower())
for word in word_tokenize(sentence)
]
elif args.lang == 'ja':
input_vocab = parse_ja_text(sentence)
else:
print("Sorry, but your language is not supported...")
raise ValueError
# check a sentiment tag
label_id = -1
if len(input_vocab) == 0:
print('caution: you donot set any words!)')
pass
elif input_vocab[-1] == '2':
del input_vocab[-1]
label_id = 1
elif input_vocab[-1] == '1':
del input_vocab[-1]
label_id = 0
else:
print('caution: you donot set any sentiment tags!')
break
# input_vocab.reverse()
# input_vocab.insert(0, "<eos>")
# convert word into ID
input_sentence = [
corpus.dic.token2id[word] for word in input_vocab
if not corpus.dic.token2id.get(word) is None
]
model.initialize() # initialize cell
sentence = model.generate(input_sentence,
sentence_limit=len(input_sentence) + 30,
word2id=corpus.dic.token2id,
id2word=corpus.dic,
label_id=label_id)
print("-> ", sentence)
print('')
def calculate_embedding_vectors(data_path, model_path):
# call dictionary class
if args.lang == 'en':
corpus = ConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
elif args.lang == 'ja':
corpus = JaConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
else:
print(
'You gave wrong argument to this system. Check out your argument about languages.'
)
raise ValueError
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
print('')
# rebuild seq2seq model
model = Seq2Seq(len(corpus.dic.token2id),
feature_num=args.feature_num,
hidden_num=args.hidden_num,
label_num=args.label_num,
label_embed_num=args.label_embed,
batch_size=1,
gpu_flg=args.gpu)
serializers.load_hdf5(model_path, model)
# get embedding vectors
embed_mat = model.dec.ye.W.data
sentiment_mat = model.dec.le.W.data
neg_vec = np.array([sentiment_mat[0, :]])
pos_vec = np.array([sentiment_mat[1, :]])
# calculate cos similarity
neg_sim_dic = {}
pos_sim_dic = {}
for i in range(embed_mat.shape[0]):
word_vec = np.array([embed_mat[i, :]])
neg_sim_dic[i] = cosine_similarity(word_vec, neg_vec)
pos_sim_dic[i] = cosine_similarity(word_vec, pos_vec)
# if cosine_similarity(word_vec, pos_vec) > cosine_similarity(word_vec, neg_vec):
# print('pos: ', corpus.dic[i])
# elif cosine_similarity(word_vec, pos_vec) < cosine_similarity(word_vec, neg_vec):
# print('neg: ', corpus.dic[i])
# else:
# print('???: ', corpus.dic[i])
# raise ValueError
# sort in descending order
neg_ordered = collections.OrderedDict(
sorted(neg_sim_dic.items(), key=lambda x: x[1], reverse=True))
pos_ordered = collections.OrderedDict(
sorted(pos_sim_dic.items(), key=lambda x: x[1], reverse=True))
# show TOP50 words
print('------- The words which is similar to a NEGATIVE tag --------')
for index, w_index in enumerate(neg_ordered):
print(corpus.dic[w_index], ': ', neg_ordered[w_index][0, 0])
if index == 49:
break
print('------- The words which is similar to a POSITIVE tag --------')
for index, w_index in enumerate(pos_ordered):
print(corpus.dic[w_index], ': ', pos_ordered[w_index][0, 0])
if index == 49:
break
def interpreter(data_path, model_path):
"""
Run this function, if you want to talk to seq2seq model.
if you type "exit", finish to talk.
:param data_path: the path of corpus you made model learn
:param model_path: the path of model you made learn
:return:
"""
# call dictionary class
if args.lang == 'en':
corpus = ConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
elif args.lang == 'ja':
corpus = JaConvCorpus(file_path=None)
corpus.load(load_dir=data_path)
else:
print(
'You gave wrong argument to this system. Check out your argument about languages.'
)
raise ValueError
print('Vocabulary Size (number of words) :', len(corpus.dic.token2id))
print('')
# rebuild seq2seq model
model = Seq2Seq(len(corpus.dic.token2id),
feature_num=args.feature_num,
hidden_num=args.hidden_num,
batch_size=1,
gpu_flg=args.gpu)
serializers.load_hdf5(model_path, model)
# run conversation system
print('The system is ready to run, please talk to me!')
print('( If you want to end a talk, please type "exit". )')
print('')
while True:
print('>> ', end='')
sentence = input()
if sentence == 'exit':
print('See you again!')
break
if args.lang == 'en':
input_vocab = [
unicodedata.normalize('NFKC', word.lower())
for word in word_tokenize(sentence)
]
elif args.lang == 'ja':
input_vocab = [
unicodedata.normalize('NFKC', word.lower())
for word in parse_ja_text(sentence)
]
input_vocab_rev = input_vocab[::-1]
# convert word into ID
input_sentence = [
corpus.dic.token2id[word] for word in input_vocab
if not corpus.dic.token2id.get(word) is None
]
input_sentence_rev = [
corpus.dic.token2id[word] for word in input_vocab_rev
if not corpus.dic.token2id.get(word) is None
]
model.initialize(batch_size=1) # initialize cell
sentence = model.generate(input_sentence,
input_sentence_rev,
sentence_limit=len(input_sentence) + 30,
word2id=corpus.dic.token2id,
id2word=corpus.dic)
print("-> ", sentence)
print('')
