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compositional_generalization

README.md

Compositionality Generalization

This repository is the official implementation of our paper Compositional Generalization by Learning Analytical Expressions.

If you find our code useful for you, please consider citing our paper

@inproceedings{qian2020compositional,
  title={Compositional Generalization by Learning Analytical Expressions},
  author={Qian Liu and Shengnan An and Jian{-}Guang Lou and Bei Chen and Zeqi Lin and Yan Gao and Bin Zhou and Nanning Zheng and Dongmei Zhang},
  booktitle={Advances in Neural Information Processing Systems 33: Annual Conference on Neural Information Processing Systems 2020, NeurIPS 2020, December 6-12, 2020, virtual},
  year={2020}
}

Content

Requirements

Our code is officially supported by Python 3.7. The main dependencies are pytorch and tensorboardX. You could install all requirements by the following command:

❱❱❱ pip install -r requirements.txt

Training

To train our model on different tasks on SCAN and SCAN-ext datasets, you could use this command:

❱❱❱ python main.py --mode train --checkpoint <model_dir> --task <task_name>

📋 Note that <model_dir> specifies the store folder of model checkpoints, and <task_name> is the task name. Available task names are [simple, addjump, around_right, length, mcd1, mcd2, mcd3, extend].

For example, you could train a model on addjump task by the following command:

❱❱❱ python main.py --mode train --checkpoint addjump_model --task addjump

📋 Since reinforcement learning is known to be hard to train, there is a chance of the code to not converge in the training. You could choose another random seed and try again.

📋 Meanwhile, please note that the model training is sensitive to the value of the hyper-parameter coefficient of the simplicity-based reward (i.e. --simplicity-ratio in args). When it is higher (i.e. 0.5 or 1.0), the model is harder to converge, which indicates that the training accuracy may not arrive at 100%. We're still investigating in the reason behind it. If you cannot obtain good results after trying several random seed, you could try to reproduce other results (not suitable for around_right and mcd3, as stated in the paper) using a 0 simplicity-ratio (default setting now). We will update the code when we find a better training strategy.

Therefore, please use the following command for around_right and mcd3 task:

❱❱❱ python main.py --mode train --checkpoint addjump_model --task around_right --simplicity-ratio 0.5

The corresponding log and model weights will be stored in the path checkpoint/logs/addjump_model.log and checkpoint/models/addjump_model/*.mdl respectively

Evaluation

To evaluate our model on different tasks, run:

❱❱❱ python main.py --mode test --checkpoint <model_weight_file> --task <task_name>

📋 Note that <model_weight_file> specifies a concrete model file with the suffix .mdl, and <task_name> is the task name.

For example, you could evaluate a trained model weight weight.mdl on addjump task by the following command:

❱❱❱ python main.py --mode test --checkpoint weight.mdl --task addjump

Pre-trained Models

You can find pretrained model weights for the above tasks under the pretrained_weights folder.

Results

Our model is excepted to achieve 100% accuracies on all tasks if the training succeeds.