Authors: Ali Seyfi, Jean-Francois Rajotte, Raymond T. Ng

Reference: Ali Seyfi, Jean-Francois Rajotte, Raymond T. Ng, "Generating multivariate time series with COmmon Source CoordInated GAN (COSCI-GAN)," Neural Information Processing Systems (NeurIPS), 2022.

Paper Link: https://openreview.net/pdf?id=RP1CtZhEmR

Code Author: Ali Seyfi

Contact: [email protected]

This directory contains implementations of COSCI-GAN framework for synthetic multivariate time series data generation using synthetic and real-world datasets.

• Sine data: Synthetic
• EEG data: https://archive.ics.uci.edu/ml/datasets/EEG+Eye+State
• Stock data: https://finance.yahoo.com/quote/GOOG/history?p=GOOG

You can change the architecture of the generator and discriminator to any arbitrary networks, such as Transformers.

• dataset: data_frame_sine_normal, data_frame_sine_freq_change, data_frame_sine_with_anomaly, EEG_Eye_State_ZeroOne_chop_5best_0, EEG_Eye_State_ZeroOne_chop_5best_1, stock_data_24,
• nepochs: Number of training epochs
• batch_size: Number of samples in each batch
• nsamples: Length of each time series
• withCD: Flag for using Central Discriminator
• LSTMG: Flag for use LSTM network for Generators, if False, the generators will be MLP
• LSTMD: Flag for use LSTM network for Discriminators, if False, the discriminators will be MLP
• criterion: 'BCE', 'MSE'
• glr: Generators' learning rate
• dlr: Discriminators' learning rate
• cdlr: Central Discriminator's learning rate
• Ngroups: Number of channels/features
• real_data_fraction: Fraction of real data to be used for training COSCI-GAN
• CD_type: Type of Central Discriminator network, choice between "MLP" and "LSTM"
• gamma: Gamma parameter controls the trade-off between Diversity and Correlation preservation as described in the paper
• noise_len: Length of input noise

$ python3 run.py --data_name stock_data_24 --nepochs 100 --batch_size 32
--nsamples 24 --withCD True --LSTMG True --LSTMD True --criterion BCE
--glr 0.001 --dlr 0.001 --cdlr 0.0001 --Ngroups 6 --real_data_fraction 10.0
--CD_type MLP --gamma 5.0 --noise_len 32