In this paper (DynaShare), we extend the task-conditioned parameter sharing approach pioneered by AdaShare, and condition parameter sharing on both the task and the intermediate feature representations. DynaShare learns a hierarchical gating policy consisting of a task-specific policy for coarse layer selection and gating units for individual input instances, which work together to determine the execution path at inference time. Experiments on the NYU v2, Cityscapes and MIMIC-III datasets demonstrate the superiority and efficiency of the proposed approach across problem domains.

Here is the link for our CVPR version.

Welcome to cite our work if you find it is helpful to your research.

@InProceedings{Rahimian_2023_CVPR,
    author    = {Rahimian, E. and Javadi, G. and Tung, F. and Oliveira, G.},
    title     = {DynaShare: Task and Instance Conditioned Parameter Sharing for Multi-Task Learning},
    booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops},
    month     = {June},
    year      = {2023},
    pages     = {4535-4543}
}

Our implementation is in Pytorch. We train and test our model on 1 Quadro RTX 5000 GPU for NYU v2 2-task and CityScapes 2-task.

We use python3.6 and please refer to this link to create a python3.6 conda environment.

Install the listed packages in the virual environment:

conda install pytorch torchvision cudatoolkit=10.2 -c pytorch
conda install matplotlib
conda install -c menpo opencv
conda install pillow
conda install -c conda-forge tqdm
conda install -c anaconda pyyaml
conda install scikit-learn
conda install -c anaconda scipy
pip install tensorboardX

This dataset is not public available, so you need to submit a request to work with this data at https://mimic.mit.edu/iii/gettingstarted/. We followed the pre-processing steps available here: https://github.com/YerevaNN/mimic3-benchmarks and saved the results in a folder named mimic_dataset.

Please execute train.py for policy learning, using the command:

python train.py --config yamls/adashare/mimic_iii_4tasks.yml --gpus 0

python train_policy_learning.py --config yamls/adashare/mimic_iii_4tasks_aig.yml --gpus 1

After Policy Learning Phase, we sample 8 different architectures and execute re-train.py for retraining.

python re-train.py --config <yaml_file_name> --gpus <gpu ids> --exp_ids <random seed id>

python re-train.py --config yamls/adashare/mimic_iii_4tasks_aig.yml --gpus 1 --exp_ids 2

, shows the seed index in the config file.

After Retraining Phase, execute test.py for get the quantitative results on the test set.

python test.py --config <yaml_file_name> --gpus <gpu ids> --exp_ids <random seed id>

and example of using different seed for mimic dataset:

python test.py --config yamls/adashare/mimic_iii_4tasks.yml --gpus 0 --exp_ids 2

For full training and testing access to DynaShare on NYU v2 and Cityscapes access DynaShare folder.

cd DynaShare/

Please download the formatted datasets for NYU v2 here

The formatted CityScapes can be found here.

Remember to change the dataroot to your local dataset path in all yaml files in the ./yamls/.

Please execute train.py for policy learning in Train_AdaShare folder, using the command

python train.py --config <yaml_file_name> --gpus <gpu ids>

For example, python train.py --config yamls/adashare/nyu_v2_2task.yml --gpus 0.

Sample yaml files are under yamls/adashare

Note: The train phase is exactly the same as Adashare paper the link.

After Policy Learning Phase, we sample 8 different architectures and execute re-train.py for retraining.

python re-train.py --config <yaml_file_name> --gpus <gpu ids> --exp_ids <random seed id>

where we use different --exp_ids to specify different random seeds and generate different architectures. The best performance of all 8 runs is reported in the paper.

For example, python re-train.py --config yamls/adashare/nyu_v2_2task_aig.yml --gpus 0 --exp_ids 0.

After Retraining Phase, execute test.py for get the quantitative results on the test set.

python test.py --config <yaml_file_name> --gpus <gpu ids> --exp_ids <random seed id>

For example, python test.py --config yamls/adashare/nyu_v2_2task_test.yml --gpus 0 --exp_ids 0.