Tagger

This is the code for the paper "Deep Semantic Role Labeling with Self-Attention".

Citation

If you use our codes, please cite our paper:

@inproceedings{tan2018deep,
  title = {Deep Semantic Role Labeling with Self-Attention},
  author = {Tan, Zhixing and Wang, Mingxuan and Xie, Jun and Chen, Yidong and Shi, Xiaodong},
  booktitle = {AAAI Conference on Artificial Intelligence},
  year = {2018}
}

Usage

Prerequisites

• python2
• A newer version of TensorFlow
• GloVe embeddings and srlconll scripts

Data

We follow the same procedures described in the deep_srl repository to convert the CoNLL datasets. The GloVe embeddings and srlconll scripts can also be found in that link.

If you followed these procedures, you can find that the processed data has the following format:

2 My cats love hats . ||| B-A0 I-A0 B-V B-A1 O

Vocabulary

You can use the vocabularies provided in the resource directory. If you want to use your own vocabulary, you can use the build_vocab.py.

python tagger/scripts/build_vocab.py --limit LIMIT --lower TRAIN_FILE OUTPUT_DIR

where LIMIT specifies the vocabulary size. This command will create two vocabularies named vocab.txt and label.txt in the OUTPUT_DIR.

Convert data format

The plain text must be converted to tf.Record format first using input_convert.py..

python tagger/scripts/input_converter.py --input_path TRAIN_FILE \
                                         --output_name NAME      \
                                         --output_dir OUTPUT_DIR \
                                         --vocab WORD_DICT LABEL_DICT \
                                         --num_shards NUM_SHARDS \
                                         --shuffle --lower

The above command will create NUM_SHARDS files with pattern NAME-*-of-* in the OUTPUT_DIR.

Training and Validating

Once you finished the procedures described above, you can start the training stage.

• Preparing the validation script

  An external validation script is required to enable the validation functionality. Here's the validation script we used to train an FFN model on the CoNLL-2005 dataset. Please make sure that the validation script can run properly.

SRLPATH=/PATH/TO/SRLCONLL
TAGGERPATH=/PATH/TO/TAGGER
DATAPATH=/PATH/TO/DATA

export PERL5LIB="$SRLPATH/lib:$PERL5LIB"
export PATH="$SRLPATH/bin:$PATH"

python $TAGGERPATH/main.py predict --data_path $DATAPATH/conll05.devel.txt \
  --model_dir train  --model_name deepatt \
  --vocab_path $DATAPATH/word_dict $DATAPATH/label_dict \
  --device_list 0 \
  --decoding_params="decode_batch_size=512" \
  --model_params="num_hidden_layers=10,feature_size=100,hidden_size=200,filter_size=800"
python $TAGGERPATH/scripts/convert_to_conll.py conll05.devel.txt.deepatt.decodes $DATAPATH/conll05.devel.props.gold.txt output
perl $SRLPATH/bin/srl-eval.pl $DATAPATH/conll05.devel.props.* output

• Training command

  The command below is what we used to train an model on the CoNLL-2005 dataset. The content of run.sh is described in the above section.

python tagger/main.py train \
    --data_path TRAIN_PATH --model_dir train --model_name deepatt \
    --vocab_path word_dict label_dict --emb_path glove.6B.100d.txt \
    --model_params=feature_size=100,hidden_size=200,filter_size=800,residual_dropout=0.2, \
                   num_hidden_layers=10,attention_dropout=0.1,relu_dropout=0.1 \
    --training_params=batch_size=4096,eval_batch_size=1024,optimizer=Adadelta,initializer=orthogonal, \
                      use_global_initializer=false,initializer_gain=1.0,train_steps=600000, \
                      learning_rate_decay=piecewise_constant,learning_rate_values=[1.0,0.5,0.25], \
                      learning_rate_boundaries=[400000,500000],device_list=[0],clip_grad_norm=1.0 \
    --validation_params=script=run.sh

Decoding

The following is the command used to generate outputs:

python tagger/main.py predict \
    --data_path conll05.test.wsj.txt \
    --model_dir train/best --model_name deepatt \
    --vocab_path word_dict label_dict \
    --device_list 0 \
    --decoding_params="decode_batch_size=512" \
    --model_params="num_hidden_layers=10,feature_size=100,hidden_size=200,filter_size=800" \
    --emb_path glove.6B.100d.txt

Model Ensemble

The command for model ensemble is similar to the one used in decoding:

python tagger/main.py ensemble \
    --data_path conll05.devel.txt \
    --checkpoints model_1/model.ckpt model_2/model.ckpt \
    --output_name output \
    --vocab_path word_dict1 word_dict2 label_dict \
    --model_params=feature_size=100,hidden_size=200,filter_size=800,num_hidden_layers=10 \
    --device_list 0 \
    --model_name deepatt \
    --emb_path glove.6B.100d.txt

Pretrained Models

The pretrained models can be downloaded at Google Drive.

Contact

This code is written by Zhixing Tan. If you have any problems, feel free to send an email.

LICENSE

BSD