def test(opt):
# 数据
dataloader = get_dataloader(opt)
_data = dataloader.dataset._data
word2ix, ix2word = _data['word2ix'], _data['ix2word']
sos = word2ix.get(_data.get('sos'))
eos = word2ix.get(_data.get('eos'))
unknown = word2ix.get(_data.get('unknown'))
voc_length = len(word2ix)
#定义模型
encoder = EncoderRNN(opt, voc_length)
decoder = LuongAttnDecoderRNN(opt, voc_length)
#加载模型
if opt.model_ckpt == None:
raise ValueError('model_ckpt is None.')
return False
checkpoint = torch.load(opt.model_ckpt, map_location=lambda s, l: s)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
with torch.no_grad():
#切换模式
encoder = encoder.to(opt.device)
decoder = decoder.to(opt.device)
encoder.eval()
decoder.eval()
#定义seracher
searcher = GreedySearchDecoder(encoder, decoder)
return searcher, sos, eos, unknown, word2ix, ix2word
def runTest(n_layers, hidden_size, reverse, modelFile, beam_size, inp, corpus):
torch.set_grad_enabled(False)
voc, pairs = loadPrepareData(corpus)
embedding = nn.Embedding(voc.num_words, hidden_size)
encoder = EncoderRNN(hidden_size, embedding, n_layers)
attn_model = 'dot'
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size,
voc.num_words, n_layers)
checkpoint = torch.load(modelFile,
map_location=lambda storage, loc: storage)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
# train mode set to false, effect only on dropout, batchNorm
encoder.train(False)
decoder.train(False)
encoder = encoder.to(device)
decoder = decoder.to(device)
if inp:
evaluateInput(encoder, decoder, voc, beam_size)
else:
evaluateRandomly(encoder, decoder, voc, pairs, reverse, beam_size, 20)
def eval():
parameter = Config()
# 加载参数
save_dir = parameter.save_dir
loadFilename = parameter.model_ckpt
pretrained_embedding_path = parameter.pretrained_embedding_path
dropout = parameter.dropout
hidden_size = parameter.hidden_size
num_layers = parameter.num_layers
attn_model = parameter.method
max_input_length = parameter.max_input_length
max_generate_length = parameter.max_generate_length
embedding_dim = parameter.embedding_dim
#加载embedding
voc = read_voc_file('./data/voc.pkl')
embedding = get_weight(voc,pretrained_embedding_path)
#输入
inputs = get_input_line('./test/test.txt')
input_batches, lengths = get_batch_id(inputs)
#
encoder = EncoderRNN(hidden_size, embedding, num_layers, dropout)
decoder = LuongAttnDecoderRNN(attn_model,embedding,hidden_size,len(voc),num_layers,dropout)
if loadFilename == None:
raise ValueError('model_ckpt is None.')
return False
checkpoint = torch.load(loadFilename, map_location=lambda s, l: s)
print(checkpoint['plt'])
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
answer =[]
with torch.no_grad():
encoder.to(device)
decoder.to(device)
#切换到测试模式
encoder.eval()
decoder.eval()
search = GreedySearchDecoder(encoder, decoder)
for input_batch in input_batches:
#print(input_batch)
token,score = generate(input_batch, search, GO_ID, EOS_ID, device)
print(token)
answer.append(token)
print(answer)
return answer
def eval(**kwargs):
opt = Config()
for k, v in kwargs.items(): #设置参数
setattr(opt, k, v)
# 数据
dataloader = get_dataloader(opt)
_data = dataloader.dataset._data
word2ix, ix2word = _data['word2ix'], _data['ix2word']
sos = word2ix.get(_data.get('sos'))
eos = word2ix.get(_data.get('eos'))
unknown = word2ix.get(_data.get('unknown'))
voc_length = len(word2ix)
#定义模型
encoder = EncoderRNN(opt, voc_length)
decoder = LuongAttnDecoderRNN(opt, voc_length)
#加载模型
if opt.model_ckpt == None:
raise ValueError('model_ckpt is None.')
return False
checkpoint = torch.load(opt.model_ckpt, map_location=lambda s, l: s)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
with torch.no_grad():
#切换模式
encoder = encoder.to(opt.device)
decoder = decoder.to(opt.device)
encoder.eval()
decoder.eval()
#定义seracher
searcher = GreedySearchDecoder(encoder, decoder)
while (1):
input_sentence = input('> ')
if input_sentence == 'q' or input_sentence == 'quit': break
cop = re.compile("[^\u4e00-\u9fa5^a-z^A-Z^0-9]") #分词处理正则
input_seq = jieba.lcut(cop.sub("", input_sentence)) #分词序列
input_seq = input_seq[:opt.max_input_length] + ['</EOS>']
input_seq = [word2ix.get(word, unknown) for word in input_seq]
tokens = generate(input_seq, searcher, sos, eos, opt)
output_words = ''.join([ix2word[token.item()] for token in tokens])
print('BOT: ', output_words)
def train(**kwargs):
opt = Config()
for k, v in kwargs.items(): #设置参数
setattr(opt, k, v)
# 数据
dataloader = get_dataloader(opt)
_data = dataloader.dataset._data
word2ix = _data['word2ix']
sos = word2ix.get(_data.get('sos'))
voc_length = len(word2ix)
#定义模型
encoder = EncoderRNN(opt, voc_length)
decoder = LuongAttnDecoderRNN(opt, voc_length)
#加载断点,从上次结束地方开始
if opt.model_ckpt:
checkpoint = torch.load(opt.model_ckpt)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
#切换模式
encoder = encoder.to(opt.device)
decoder = decoder.to(opt.device)
encoder.train()
decoder.train()
#定义优化器(注意与encoder.to(device)前后不要反)
encoder_optimizer = torch.optim.Adam(encoder.parameters(),
lr=opt.learning_rate)
decoder_optimizer = torch.optim.Adam(decoder.parameters(),
lr=opt.learning_rate *
opt.decoder_learning_ratio)
if opt.model_ckpt:
encoder_optimizer.load_state_dict(checkpoint['en_opt'])
decoder_optimizer.load_state_dict(checkpoint['de_opt'])
#定义打印loss的变量
print_loss = 0
for epoch in range(opt.epoch):
for ii, data in enumerate(dataloader):
#取一个batch训练
loss = train_by_batch(sos, opt, data, encoder_optimizer,
decoder_optimizer, encoder, decoder)
print_loss += loss
#打印损失
if ii % opt.print_every == 0:
print_loss_avg = print_loss / opt.print_every
print(
"Epoch: {}; Epoch Percent complete: {:.1f}%; Average loss: {:.4f}"
.format(epoch, epoch / opt.epoch * 100, print_loss_avg))
print_loss = 0
# 保存checkpoint
if epoch % opt.save_every == 0:
checkpoint_path = '{prefix}_{time}'.format(
prefix=opt.prefix, time=time.strftime('%m%d_%H%M'))
torch.save(
{
'en': encoder.state_dict(),
'de': decoder.state_dict(),
'en_opt': encoder_optimizer.state_dict(),
'de_opt': decoder_optimizer.state_dict(),
}, checkpoint_path)
def trainIters(corpus,
reverse,
n_iteration,
learning_rate,
batch_size,
n_layers,
hidden_size,
print_every,
save_every,
dropout,
loadFilename=None,
attn_model='dot',
decoder_learning_ratio=5.0):
voc, pairs = loadPrepareData(corpus)
#todo:string转数字的字典，pairs为等待转换的对话
# training data
corpus_name = os.path.split(corpus)[-1].split('.')[0]
training_batches = None
#todo:training_batches=随机抽取64组对话，交给batch2TrainData构成一组batch
#TODO:没有采用epoch的模式，batch2TrainData负责將 load.py 所整理好的training pairs，轉換成input, output Variable。 总计循环n_iteration次，
#TODO: 每次iteration调用batch2TrainData构造一个batch。每个batch为随机抽取64组对话，交给batch2TrainData构成一组batch。 因此此处有待改造
try:
training_batches = torch.load(os.path.join(save_dir, 'training_data', corpus_name,
'{}_{}_{}.tar'.format(n_iteration, \
filename(reverse, 'training_batches'), \
batch_size)))
except FileNotFoundError:
print('Training pairs not found, generating ...')
training_batches = [
batch2TrainData(voc,
[random.choice(pairs)
for _ in range(batch_size)], reverse)
for _ in range(n_iteration)
]
# # model
checkpoint = None
print('Building encoder and decoder ...')
embedding = nn.Embedding(voc.n_words, hidden_size)
encoder = EncoderRNN(voc.n_words, hidden_size, embedding, n_layers,
dropout)
attn_model = 'dot'
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size,
voc.n_words, n_layers, dropout)
if loadFilename:
checkpoint = torch.load(loadFilename)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
# use cuda
# if torch.cuda.device_count()>1:
# encoder=nn.DataParallel(encoder)
#decoder=nn.DataParallel(decoder)
encoder = encoder.to(device)
decoder = decoder.to(device)
# optimizer
print('Building optimizers ...')
encoder_optimizer = optim.Adam(encoder.parameters(), lr=learning_rate)
decoder_optimizer = optim.Adam(decoder.parameters(),
lr=learning_rate * decoder_learning_ratio)
if loadFilename:
encoder_optimizer.load_state_dict(checkpoint['en_opt'])
decoder_optimizer.load_state_dict(checkpoint['de_opt'])
# initialize
print('Initializing ...')
start_iteration = 1
perplexity = []
print_loss = 0
if loadFilename:
start_iteration = checkpoint['iteration'] + 1
perplexity = checkpoint['plt']
for iteration in range(start_iteration, n_iteration + 1):
training_batch = training_batches[iteration - 1]
input_variable, lengths, target_variable, mask, max_target_len = training_batch
loss = train(input_variable, lengths, target_variable, mask,
max_target_len, encoder, decoder, embedding,
encoder_optimizer, decoder_optimizer, batch_size)
print_loss += loss
perplexity.append(loss)
if iteration % print_every == 0:
print_loss_avg = math.exp(print_loss / print_every)
#print('%d %d%% %.4f' % (iteration, iteration / n_iteration * 100, print_loss_avg))
with open('log.txt', 'a') as f:
import time
template = ' Iter: {:0>6d} process: {:.2f} avg_loss: {:.4f} time: {}\n'
str = template.format(
iteration, iteration / n_iteration * 100, print_loss_avg,
time.asctime(time.localtime(time.time())))
f.write(str)
print_loss = 0
if (iteration % save_every == 0):
directory = os.path.join(
save_dir, 'model', corpus_name,
'{}-{}_{}'.format(n_layers, n_layers, hidden_size))
if not os.path.exists(directory):
os.makedirs(directory)
torch.save(
{
'iteration': iteration,
'en': encoder.state_dict(),
'de': decoder.state_dict(),
'en_opt': encoder_optimizer.state_dict(),
'de_opt': decoder_optimizer.state_dict(),
'loss': loss,
'plt': perplexity
},
os.path.join(
directory,
'{}_{}.tar'.format(iteration,
filename(reverse,
'backup_bidir_model'))))
def trainIters(corpus,
reverse,
n_iteration,
learning_rate,
batch_size,
n_layers,
hidden_size,
print_every,
save_every,
dropout,
loadFilename=None,
attn_model='dot',
decoder_learning_ratio=5.0):
voc, pairs = loadPrepareData(corpus)
# training data
corpus_name = os.path.split(corpus)[-1].split('.')[0]
training_batches = None
try:
training_batches = torch.load(os.path.join(save_dir, 'training_data', corpus_name,
'{}_{}_{}.tar'.format(n_iteration, \
filename(reverse, 'training_batches'), \
batch_size)))
except FileNotFoundError:
print('Training pairs not found, generating ...')
training_batches = [
batch2TrainData(voc,
[random.choice(pairs)
for _ in range(batch_size)], reverse)
for _ in range(n_iteration)
]
torch.save(training_batches, os.path.join(save_dir, 'training_data', corpus_name,
'{}_{}_{}.tar'.format(n_iteration, \
filename(reverse, 'training_batches'), \
batch_size)))
# model
checkpoint = None
print('Building encoder and decoder ...')
embedding = nn.Embedding(voc.n_words, hidden_size)
encoder = EncoderRNN(voc.n_words, hidden_size, embedding, n_layers,
dropout)
attn_model = 'dot'
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size,
voc.n_words, n_layers, dropout)
if loadFilename:
checkpoint = torch.load(loadFilename)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
# use cuda
encoder = encoder.to(device)
decoder = decoder.to(device)
# optimizer
print('Building optimizers ...')
encoder_optimizer = optim.Adam(encoder.parameters(), lr=learning_rate)
decoder_optimizer = optim.Adam(decoder.parameters(),
lr=learning_rate * decoder_learning_ratio)
if loadFilename:
encoder_optimizer.load_state_dict(checkpoint['en_opt'])
decoder_optimizer.load_state_dict(checkpoint['de_opt'])
# initialize
print('Initializing ...')
start_iteration = 1
perplexity = []
print_loss = 0
if loadFilename:
start_iteration = checkpoint['iteration'] + 1
perplexity = checkpoint['plt']
for iteration in tqdm(range(start_iteration, n_iteration + 1)):
training_batch = training_batches[iteration - 1]
input_variable, lengths, target_variable, mask, max_target_len = training_batch
loss = train(input_variable, lengths, target_variable, mask,
max_target_len, encoder, decoder, embedding,
encoder_optimizer, decoder_optimizer, batch_size)
print_loss += loss
perplexity.append(loss)
if iteration % print_every == 0:
print_loss_avg = math.exp(print_loss / print_every)
print('%d %d%% %.4f' %
(iteration, iteration / n_iteration * 100, print_loss_avg))
print_loss = 0
if (iteration % save_every == 0):
directory = os.path.join(
save_dir, 'model', corpus_name,
'{}-{}_{}'.format(n_layers, n_layers, hidden_size))
if not os.path.exists(directory):
os.makedirs(directory)
torch.save(
{
'iteration': iteration,
'en': encoder.state_dict(),
'de': decoder.state_dict(),
'en_opt': encoder_optimizer.state_dict(),
'de_opt': decoder_optimizer.state_dict(),
'loss': loss,
'plt': perplexity
},
os.path.join(
directory,
'{}_{}.tar'.format(iteration,
filename(reverse,
'backup_bidir_model'))))
print('Building encoder and decoder ...')
# 初始化词向量
embedding = nn.Embedding(voc.num_words, hidden_size)
if loadFilename:
embedding.load_state_dict(embedding_sd)
# 初始化编码器 & 解码器模型
encoder = EncoderRNN(hidden_size, embedding, encoder_n_layers, dropout)
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size,
voc.num_words, decoder_n_layers, dropout)
if loadFilename:
encoder.load_state_dict(encoder_sd)
decoder.load_state_dict(decoder_sd)
# 使用合适的设备
encoder = encoder.to(device)
decoder = decoder.to(device)
print('Models built and ready to go!')
# step8: do train
# 配置训练/优化
clip = 50.0
teacher_forcing_ratio = 1.0
learning_rate = 0.0001
decoder_learning_ratio = 5.0
n_iteration = 4000
print_every = 1
save_every = 500
# 确保dropout layers在训练模型中
encoder.train()
decoder.train()
def train():
parameter = Config()
model_name = parameter.model_name
save_dir = parameter.save_dir
loadFilename = parameter.model_ckpt
pretrained_embedding_path = parameter.pretrained_embedding_path
max_input_length = parameter.max_input_length
max_generate_length = parameter.max_generate_length
embedding_dim = parameter.embedding_dim
batch_size = parameter.batch_size
hidden_size = parameter.hidden_size
attn_model = parameter.method
dropout = parameter.dropout
clip = parameter.clip
num_layers = parameter.num_layers
learning_rate = parameter.learning_rate
teacher_forcing_ratio = parameter.teacher_forcing_ratio
decoder_learning_ratio = parameter.decoder_learning_ratio
n_iteration = parameter.epoch
print_every = parameter.print_every
save_every = parameter.save_every
print(max_input_length,max_generate_length)
#data
voc = read_voc_file() #从保存的词汇表之中读取词汇
print(voc)
pairs = get_pairs()
train_batches = None
try :
training_batches = torch.load( os.path.join(save_dir, '{}_{}_{}.tar'.format(n_iteration, 'training_batches', batch_size)))
except FileNotFoundError:
training_batches = [get_batch(voc, batch_size, pairs, max_input_length, max_generate_length) for _ in
range(n_iteration)]
torch.save(training_batches, os.path.join(save_dir, '{}_{}_{}.tar'.format(n_iteration, 'training_batches', batch_size)))
#model
checkpoint = None
print('Building encoder and decoder ...')
if pretrained_embedding_path == None :
embedding = nn.Embedding(len(voc), embedding_dim)
else:
embedding = get_weight(voc, pretrained_embedding_path, embedding_dim)
print('embedding加载完成')
encoder = EncoderRNN(hidden_size, embedding, num_layers, dropout)
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size, len(voc), num_layers, dropout)
if loadFilename:
checkpoint = torch.load(loadFilename)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
# use cuda
encoder = encoder.to(device)
decoder = decoder.to(device)
# optimizer
print('Building optimizers ...')
encoder_optimizer = optim.Adam(encoder.parameters(), lr=learning_rate)
decoder_optimizer = optim.Adam(decoder.parameters(), lr=learning_rate * decoder_learning_ratio)
if loadFilename:
encoder_optimizer.load_state_dict(checkpoint['en_opt'])
decoder_optimizer.load_state_dict(checkpoint['de_opt'])
# initialize
print('Initializing ...')
start_iteration = 1
perplexity = []
print_loss = 0
if loadFilename:
start_iteration = checkpoint['iteration'] + 1
perplexity = checkpoint['plt']
f = open('record.txt','w',encoding ='utf-8')
for iteration in tqdm(range(start_iteration, n_iteration + 1)):
training_batch = training_batches[iteration - 1]
input_variable, lengths, target_variable, mask, max_target_len = training_batch
loss = train_by_batch(input_variable, lengths, target_variable, mask, max_target_len, encoder,
decoder, embedding, encoder_optimizer, decoder_optimizer, batch_size,clip,teacher_forcing_ratio)
print_loss += loss
perplexity.append(loss)
if iteration % print_every == 0:
print_loss_avg = math.exp(print_loss / print_every)
print('%d %d%% %.4f' % (iteration, iteration / n_iteration * 100, print_loss_avg))
print_loss = 0
if (iteration % save_every == 0):
directory = os.path.join(save_dir, 'model', model_name, '{}-{}_{}'.format(num_layers, num_layers, hidden_size))
if not os.path.exists(directory):
os.makedirs(directory)
torch.save({
'iteration': iteration,
'en': encoder.state_dict(),
'de': decoder.state_dict(),
'en_opt': encoder_optimizer.state_dict(),
'de_opt': decoder_optimizer.state_dict(),
'loss': loss,
'plt': perplexity
}, os.path.join(directory, '{}_{}.tar'.format(iteration, 'backup_bidir_model')))
print(perplexity)
def main():
USE_CUDA = torch.cuda.is_available()
device = torch.device("cuda" if USE_CUDA else "cpu")
# load dict
corpus_name = "cornell movie-dialogs corpus"
corpus = os.path.join("data", corpus_name)
datafile = os.path.join(corpus, "formatted_movie_lines.txt")
voc, pairs = loadPrepareData(corpus_name, datafile)
# model parameters
save_dir = os.path.join("data", "save")
model_name = 'cb_model'
attn_model = 'dot'
encoder_n_layers = 2
decoder_n_layers = 2
hidden_size = 500
checkpoint_iter = 4000
loadFilename = os.path.join(
save_dir, model_name, corpus_name,
'{}-{}_{}'.format(encoder_n_layers, decoder_n_layers, hidden_size),
'{}_checkpoint.tar'.format(checkpoint_iter))
# Load model if a loadFilename is provided
if loadFilename:
# If loading on same machine the model was trained on
checkpoint = torch.load(loadFilename)
# If loading a model trained on GPU to CPU
# checkpoint = torch.load(loadFilename, map_location=torch.device('cpu'))
encoder_sd = checkpoint['en']
decoder_sd = checkpoint['de']
encoder_optimizer_sd = checkpoint['en_opt']
decoder_optimizer_sd = checkpoint['de_opt']
embedding_sd = checkpoint['embedding']
voc.__dict__ = checkpoint['voc_dict']
print('Building encoder and decoder ...')
# Initialize word embeddings
embedding = nn.Embedding(voc.num_words, hidden_size)
if loadFilename:
embedding.load_state_dict(embedding_sd)
# Initialize encoder & decoder models
encoder = EncoderRNN(hidden_size, embedding, encoder_n_layers, dropout=0)
decoder = LuongAttnDecoderRNN(attn_model,
embedding,
hidden_size,
voc.num_words,
decoder_n_layers,
dropout=0)
if loadFilename:
encoder.load_state_dict(encoder_sd)
decoder.load_state_dict(decoder_sd)
# Use appropriate device
encoder = encoder.to(device)
decoder = decoder.to(device)
print('Models built and ready to go!')
# Set dropout layers to eval mode
encoder.eval()
decoder.eval()
# Initialize search module
searcher = GreedySearchDecoder(encoder, decoder, device)
# Begin chatting (uncomment and run the following line to begin)
evaluateInput(device, encoder, decoder, searcher, voc)
def main():
USE_CUDA = torch.cuda.is_available()
device = torch.device("cuda" if USE_CUDA else "cpu")
# load data
corpus_name = "cornell movie-dialogs corpus"
corpus = os.path.join("data", corpus_name)
datafile = os.path.join(corpus, "formatted_movie_lines.txt")
voc, pairs = loadPrepareData(corpus_name, datafile)
# Trim voc and pairs
pairs = trimRareWords(voc, pairs, MIN_COUNT)
# Configure models
model_name = 'cb_model'
attn_model = 'dot'
# attn_model = 'general'
# attn_model = 'concat'
hidden_size = 500
encoder_n_layers = 2
decoder_n_layers = 2
dropout = 0.1
batch_size = 64
# Set checkpoint to load from; set to None if starting from scratch
loadFilename = None
# checkpoint_iter = 4000
# loadFilename = os.path.join(save_dir, model_name, corpus_name,
# '{}-{}_{}'.format(encoder_n_layers, decoder_n_layers, hidden_size),
# '{}_checkpoint.tar'.format(checkpoint_iter))
# Load model if a loadFilename is provided
checkpoint = None
if loadFilename:
# If loading on same machine the model was trained on
checkpoint = torch.load(loadFilename)
# If loading a model trained on GPU to CPU
# checkpoint = torch.load(loadFilename, map_location=torch.device('cpu'))
encoder_sd = checkpoint['en']
decoder_sd = checkpoint['de']
encoder_optimizer_sd = checkpoint['en_opt']
decoder_optimizer_sd = checkpoint['de_opt']
embedding_sd = checkpoint['embedding']
voc.__dict__ = checkpoint['voc_dict']
print('Building encoder and decoder ...')
# Initialize word embeddings
embedding = nn.Embedding(voc.num_words, hidden_size)
if loadFilename:
embedding.load_state_dict(embedding_sd)
# Initialize encoder & decoder models
encoder = EncoderRNN(hidden_size, embedding, encoder_n_layers, dropout)
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size,
voc.num_words, decoder_n_layers, dropout)
if loadFilename:
encoder.load_state_dict(encoder_sd)
decoder.load_state_dict(decoder_sd)
# Use appropriate device
encoder = encoder.to(device)
decoder = decoder.to(device)
print('Models built and ready to go!')
# Configure training/optimization
clip = 50.0
teacher_forcing_ratio = 1.0
learning_rate = 0.0001
decoder_learning_ratio = 5.0
n_iteration = 4000
print_every = 1
save_every = 500
# Ensure dropout layers are in train mode
encoder.train()
decoder.train()
# Initialize optimizers
print('Building optimizers ...')
encoder_optimizer = optim.Adam(encoder.parameters(), lr=learning_rate)
decoder_optimizer = optim.Adam(decoder.parameters(),
lr=learning_rate * decoder_learning_ratio)
if loadFilename:
encoder_optimizer.load_state_dict(encoder_optimizer_sd)
decoder_optimizer.load_state_dict(decoder_optimizer_sd)
# Run training iterations
print("Starting Training!")
save_dir = os.path.join("data", "save")
trainIters(model_name, voc, pairs, encoder, decoder, encoder_optimizer,
decoder_optimizer, embedding, encoder_n_layers,
decoder_n_layers, save_dir, n_iteration, batch_size,
print_every, save_every, clip, corpus_name, checkpoint,
hidden_size, teacher_forcing_ratio, device)
def trainIters(corpus,
reverse,
n_iteration,
learning_rate,
batch_size,
n_layers,
hidden_size,
print_every,
save_every,
dropout,
loadFilename=None,
attn_model='dot',
decoder_learning_ratio=5.0):
voc, pairs = loadPrepareData(corpus)
# training data
corpus_name = os.path.split(corpus)[-1].split('.')[0]
training_batches = None
training_batches = [
batch2TrainData(voc, [random.choice(pairs)
for _ in range(batch_size)], reverse)
for _ in range(n_iteration)
]
# model
checkpoint = None
print('Building encoder and decoder ...')
embedding = nn.Embedding(voc.n_words, hidden_size)
encoder = EncoderRNN(voc.n_words, hidden_size, embedding, n_layers,
dropout)
attn_model = 'dot'
decoder = LuongAttnDecoderRNN(attn_model, embedding, hidden_size,
voc.n_words, n_layers, dropout)
if loadFilename:
checkpoint = torch.load(loadFilename)
encoder.load_state_dict(checkpoint['en'])
decoder.load_state_dict(checkpoint['de'])
# use cuda
encoder = encoder.to(device)
decoder = decoder.to(device)
# optimizer
print('Building optimizers ...')
encoder_optimizer = optim.Adam(encoder.parameters(), lr=learning_rate)
decoder_optimizer = optim.Adam(decoder.parameters(),
lr=learning_rate * decoder_learning_ratio)
if loadFilename:
encoder_optimizer.load_state_dict(checkpoint['en_opt'])
decoder_optimizer.load_state_dict(checkpoint['de_opt'])
# initialize
print('Initializing ...')
start_iteration = 1
perplexity = []
print_loss = 0
if loadFilename:
start_iteration = checkpoint['iteration'] + 1
perplexity = checkpoint['plt']
# 进度条显示
for iteration in tqdm(range(start_iteration, n_iteration + 1)):
# 得到当前iteration的数据
training_batch = training_batches[iteration - 1]
input_variable, lengths, target_variable, mask, max_target_len = training_batch
loss = train(input_variable, lengths, target_variable, mask,
max_target_len, encoder, decoder, embedding,
encoder_optimizer, decoder_optimizer, batch_size)
print_loss += loss
perplexity.append(loss)
def main():
phase = {"train": {"pairs": []}, "test": {"pairs": []}}
if run_mode == 'train':
with open(datafiles["qr_train"], "r") as file_obj:
for line in file_obj:
phase["train"]["pairs"].append(line.split("\n")[0].split("\t"))
with open(f"{os.path.join(split_path, 'voc.pickle')}", "rb") as f:
phase["train"]["voc"] = pickle.load(f)
# Shuffle both sets ONCE before the entire training
random.seed(1) # seed can be any number
random.shuffle(phase["train"]["pairs"])
print('Building training set encoder and decoder ...')
# Initialize word embeddings for both encoder and decoder
embedding = nn.Embedding(phase["train"]["voc"].num_words,
HIDDEN_SIZE).to(device)
# Initialize encoder & decoder models
encoder = EncoderRNN(HIDDEN_SIZE,
embedding,
ENCODER_N_LAYERS,
DROPOUT,
gate=encoder_name,
bidirectional=BIDIRECTION)
decoder = LuongAttnDecoderRNN(attn_model,
embedding,
HIDDEN_SIZE,
phase["train"]["voc"].num_words,
DECODER_N_LAYERS,
DROPOUT,
gate=decoder_name)
# Use appropriate device
encoder = encoder.to(device)
decoder = decoder.to(device)
encoder.train()
decoder.train()
print('Models built and ready to go!')
# Initialize optimizers
print('Building optimizers ...')
if args.get('optimizer') == "ADAM":
encoder_optimizer = optim.Adam(encoder.parameters(),
lr=LR,
weight_decay=WD)
decoder_optimizer = optim.Adam(decoder.parameters(),
lr=LR,
weight_decay=WD)
elif args.get('optimizer') == "SGD":
encoder_optimizer = optim.SGD(encoder.parameters(), lr=LR)
decoder_optimizer = optim.SGD(decoder.parameters(), lr=LR)
else:
raise ValueError(
"Wrong optimizer type has been given as an argument.")
# If you have cuda, configure cuda to call
for optimizer in [encoder_optimizer, decoder_optimizer]:
for state in optimizer.state.values():
for k, v in state.items():
if isinstance(v, torch.Tensor):
state[k] = v.cuda()
print("Starting Training!")
save_model = run(encoder,
decoder,
encoder_optimizer,
decoder_optimizer,
EPOCH_NUM,
BATCH_SIZE,
CLIP,
phase,
evaluation=True)
if save_model:
try:
save_seq2seq(encoder, decoder, encoder_name, decoder_name,
encoder_optimizer, decoder_optimizer,
phase["train"]["losses"], phase["train"]["bleu"],
phase["train"]["voc"], embedding, DROPOUT, CLIP,
WD)
print("Model has been saved successfully.")
except Exception as error:
print("Saving the model has caused an exception:", error)
write_results("loss", "train", encoder, encoder_name, decoder_name,
DROPOUT, CLIP, WD, phase["train"]["losses"])
write_results("bleu", "train", encoder, encoder_name, decoder_name,
DROPOUT, CLIP, WD, phase["train"]["bleu"])
else:
# Loading basic objects needed for all 3 of validation, testing and chatting
checkpoint = torch.load(args.get('model_path'))
embedding = load_embedding(checkpoint, HIDDEN_SIZE)
encoder = load_encoder(checkpoint, EncoderRNN, HIDDEN_SIZE, embedding,
ENCODER_N_LAYERS, DROPOUT, encoder_name,
BIDIRECTION)
voc = load_voc(checkpoint)
decoder = load_decoder(checkpoint, LuongAttnDecoderRNN, attn_model,
embedding, HIDDEN_SIZE, voc.num_words,
DECODER_N_LAYERS, DROPOUT, decoder_name)
encoder = encoder.to(device)
decoder = decoder.to(device)
if run_mode == "test":
with open(datafiles["qr_train"], "r") as file_obj:
for line in file_obj:
phase["train"]["pairs"].append(
line.split("\n")[0].split("\t"))
with open(datafiles["qr_test"], "r") as file_obj:
for line in file_obj:
phase["test"]["pairs"].append(
line.split("\n")[0].split("\t"))
with open(f"{os.path.join(split_path, 'voc.pickle')}", "rb") as f:
phase["train"]["voc"] = pickle.load(f)
_ = run(encoder,
decoder,
None,
None,
EPOCH_NUM,
BATCH_SIZE,
CLIP,
phase,
evaluation=True)
write_results("loss", "train", encoder, encoder_name, decoder_name,
DROPOUT, CLIP, WD, phase["train"]["losses"])
write_results("bleu", "train", encoder, encoder_name, decoder_name,
DROPOUT, CLIP, WD, phase["train"]["bleu"])
write_results("loss", "test", encoder, encoder_name, decoder_name,
DROPOUT, CLIP, WD, phase["test"]["losses"])
write_results("bleu", "test", encoder, encoder_name, decoder_name,
DROPOUT, CLIP, WD, phase["test"]["bleu"])
elif run_mode == "chat":
# Initialize search module
searcher = GreedySearchDecoder(encoder, decoder)
chat(searcher, voc)
else:
raise ValueError(
"Wrong run_mode has been given, options: ['train', 'test', 'chat']"
)
embedding = nn.Embedding(voc.num_words, config.hidden_size)
if config.loadFilename:
embedding.load_state_dict(embedding_sd)
encoder = EncoderRNN(config.hidden_size, embedding, config.encoder_n_layers,
config.dropout)
decoder = LuongAttnDecoderRNN(config.attn_model, embedding, config.hidden_size,
voc.num_words, config.decoder_n_layers,
config.dropout)
if config.loadFilename:
encoder.load_state_dict(encoder_sd)
decoder.load_state_dict(decoder_sd)
encoder = encoder.to(config.device)
decoder = decoder.to(config.device)
print('Models built and ready to go!')
if config.training:
print('Building optimizers ...')
encoder_optimizer = optim.Adam(encoder.parameters(),
lr=config.learning_rate)
decoder_optimizer = optim.Adam(decoder.parameters(),
lr=config.learning_rate *
config.decoder_learning_ratio)
if config.loadFilename:
encoder_optimizer.load_state_dict(encoder_optimizer_sd)
decoder_optimizer.load_state_dict(decoder_optimizer_sd)
if config.USE_CUDA: