import os import numpy as np import time import argparse import multiprocessing import paddle import paddle.fluid as fluid import utils.reader as reader import cPickle as pickle from utils.util import print_arguments from model import Net #yapf: disable def parse_args(): parser = argparse.ArgumentParser("Training DAM.") parser.add_argument( '--batch_size', type=int, default=256, help='Batch size for training. (default: %(default)d)') parser.add_argument( '--num_scan_data', type=int, default=2, help='Number of pass for training. (default: %(default)d)') parser.add_argument( '--learning_rate', type=float, default=1e-3, help='Learning rate used to train. (default: %(default)f)') parser.add_argument( '--data_path', type=str, default="data/data_small.pkl", help='Path to training data. (default: %(default)s)') parser.add_argument( '--save_path', type=str, default="saved_models", help='Path to save trained models. (default: %(default)s)') parser.add_argument( '--use_cuda', action='store_true', help='If set, use cuda for training.') parser.add_argument( '--ext_eval', action='store_true', help='If set, use MAP, MRR ect for evaluation.') parser.add_argument( '--max_turn_num', type=int, default=9, help='Maximum number of utterances in context.') parser.add_argument( '--max_turn_len', type=int, default=50, help='Maximum length of setences in turns.') parser.add_argument( '--word_emb_init', type=str, default=None, help='Path to the initial word embedding.') parser.add_argument( '--vocab_size', type=int, default=434512, help='The size of vocabulary.') parser.add_argument( '--emb_size', type=int, default=200, help='The dimension of word embedding.') parser.add_argument( '--_EOS_', type=int, default=28270, help='The id for the end of sentence in vocabulary.') parser.add_argument( '--stack_num', type=int, default=5, help='The number of stacked attentive modules in network.') args = parser.parse_args() return args #yapf: enable def train(args): # data data_config data_conf = { "batch_size": args.batch_size, "max_turn_num": args.max_turn_num, "max_turn_len": args.max_turn_len, "_EOS_": args._EOS_, } dam = Net(args.max_turn_num, args.max_turn_len, args.vocab_size, args.emb_size, args.stack_num) loss, logits = dam.create_network() loss.persistable = True logits.persistable = True train_program = fluid.default_main_program() test_program = fluid.default_main_program().clone(for_test=True) # gradient clipping fluid.clip.set_gradient_clip(clip=fluid.clip.GradientClipByValue( max=1.0, min=-1.0)) optimizer = fluid.optimizer.Adam( learning_rate=fluid.layers.exponential_decay( learning_rate=args.learning_rate, decay_steps=400, decay_rate=0.9, staircase=True)) optimizer.minimize(loss) fluid.memory_optimize(train_program) if args.use_cuda: place = fluid.CUDAPlace(0) dev_count = fluid.core.get_cuda_device_count() else: place = fluid.CPUPlace() dev_count = int(os.environ.get('CPU_NUM', multiprocessing.cpu_count())) print("device count %d" % dev_count) exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) train_exe = fluid.ParallelExecutor( use_cuda=args.use_cuda, loss_name=loss.name, main_program=train_program) test_exe = fluid.ParallelExecutor( use_cuda=args.use_cuda, main_program=test_program, share_vars_from=train_exe) if args.ext_eval: import utils.douban_evaluation as eva else: import utils.evaluation as eva if args.word_emb_init is not None: print("start loading word embedding init ...") word_emb = np.array(pickle.load(open(args.word_emb_init, 'rb'))).astype( 'float32') print("finish loading word embedding init ...") print("start loading data ...") train_data, val_data, test_data = pickle.load(open(args.data_path, 'rb')) print("finish loading data ...") val_batches = reader.build_batches(val_data, data_conf) batch_num = len(train_data['y']) / args.batch_size val_batch_num = len(val_batches["response"]) print_step = max(1, batch_num / (dev_count * 100)) save_step = max(1, batch_num / (dev_count * 10)) word_emb_inited = False print("begin model training ...") print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))) step = 0 for epoch in xrange(args.num_scan_data): shuffle_train = reader.unison_shuffle(train_data) train_batches = reader.build_batches(shuffle_train, data_conf) ave_cost = 0.0 for it in xrange(batch_num // dev_count): feed_list = [] for dev in xrange(dev_count): index = it * dev_count + dev feed_dict = reader.make_one_batch_input(train_batches, index) if word_emb_inited is False and args.word_emb_init is not None: feed_dict[dam.word_emb_name] = word_emb feed_list.append(feed_dict) word_emb_inited = True cost = train_exe.run(feed=feed_list, fetch_list=[loss.name]) ave_cost += np.array(cost[0]).mean() step = step + 1 if step % print_step == 0: print("processed: [" + str(step * dev_count * 1.0 / batch_num) + "] ave loss: [" + str(ave_cost / print_step) + "]") ave_cost = 0.0 if (args.save_path is not None) and (step % save_step == 0): save_path = os.path.join(args.save_path, "step_" + str(step)) print("Save model at step %d ... " % step) print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))) fluid.io.save_persistables(exe, save_path) score_path = os.path.join(args.save_path, 'score.' + str(step)) score_file = open(score_path, 'w') for it in xrange(val_batch_num // dev_count): feed_list = [] for dev in xrange(dev_count): val_index = it * dev_count + dev feed_dict = reader.make_one_batch_input(val_batches, val_index) feed_list.append(feed_dict) predicts = test_exe.run(feed=feed_list, fetch_list=[logits.name]) scores = np.array(predicts[0]) for dev in xrange(dev_count): val_index = it * dev_count + dev for i in xrange(args.batch_size): score_file.write( str(scores[args.batch_size * dev + i][0]) + '\t' + str(val_batches["label"][val_index][ i]) + '\n') score_file.close() #write evaluation result result = eva.evaluate(score_path) result_file_path = os.path.join(args.save_path, 'result.' + str(step)) with open(result_file_path, 'w') as out_file: for p_at in result: out_file.write(str(p_at) + '\n') print('finish evaluation') print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))) if __name__ == '__main__': args = parse_args() print_arguments(args) train(args)