Lion

Text pair classification toolkit.

Usage

Preprocessing:

1. Transform the dataset to the standard formation . We currently support snli, qnli and quoraqp. Please write your own transformation scripts for other dataset.
   python lion/data/dataset_utils/quoraqp.py convert-dataset --indir INDIR --outdir OUTDIR

2. Preprocess the dataset.
   python lion/data/processor.py process-dataset --in_dir IN_DIR --out_dir OUT_DIR --splits ['train'|'dev'|'test'] --tokenizer_name [spacy/bert/xlnet] --vocab_file FILE_PATH --max_length SEQUENCE_LENGTH

Training:

1. Create a directory for saving model and put the config file in it .
2. Edit the config file, modifying the train file and dev file path .
3. Run lion/training/trainer.py
   For example:
   python lion/training/trainer.py --train --output_dir experiments/QQP/esim/ .

Hyper-parameter searching

1. Create a directory for saving model and put the config file in it .
2. Edit the config file, modifying the train file and dev file path .
3. Edit the tuned_params.yaml For example:

hidden_size:
    - 100
    - 200
    - 300
dropout:
    - 0.1
    - 0.2

4. Run python lion/training/search_parameter.py --parent_dir experiments/QQP/esim/hidden_dim/

Evaluation:

python lion/training/trainer.py --evaluate --output_dir experiments/QQP/esim/ --dev_file your_dev_path

Testing:

python lion/training/trainer.py --predict --output_dir experiments/QQP/esim/ --test_file your_test_file

Models

Model	Quora QP	SNLI	QNLI
BiMPM	86.9	86.0	80.5
Esim	88.4	87.4	81.4
BERT	91.3	91.1	91.7
XLNET	91.5	91.6	91.9

Note: All the performance in the above table is tested on the dev set. The hyperparameter we used for these models are all in the experiments/DATASET/MODEL directory.

How to use ELMO

Just write this in your config file: use_elmo: concat or only and remember to set the word_dim correctly. For example if you use ELMO embedding only, set the word_dim: 1024 or set the word_dim: 1324 if you use ELMO and GLove together.

License

Apache-2.0