| Name | uni2ts JSON |
| Version |
1.1.0
JSON |
| download |
| home_page | None |
| Summary | Unified Training of Universal Time Series Forecasting Transformers |
| upload_time | 2024-08-15 03:36:08 |
| maintainer | None |
| docs_url | None |
| author | Akshat Kumar, Caiming Xiong, Silvio Savarese, Doyen Sahoo |
| requires_python | >=3.10 |
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| keywords |
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time series forecasting
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# Unified Training of Universal Time Series Forecasting Transformers
[Paper](https://arxiv.org/abs/2402.02592) | [Blog Post](https://blog.salesforceairesearch.com/moirai/)
Uni2TS is a PyTorch based library for research and applications related to Time Series Transformers.
This library aims to provide a unified solution to large-scale pre-training of Universal Time Series Transformers.
Uni2TS also provides tools for fine-tuning, inference, and evaluation for time series forecasting.
## 🎉 What's New
* May 2024: The Uni2TS paper has been accepted to ICML 2024 as an Oral presentation!
* Mar 2024: Release of Uni2TS library, along with [Moirai-1.0-R](https://huggingface.co/collections/Salesforce/moirai-10-r-models-65c8d3a94c51428c300e0742) and [LOTSA data](https://huggingface.co/datasets/Salesforce/lotsa_data/)!
## ✅ TODO
- [ ] Improve docstrings and documentation
[//]: # (- [ ] Support more pre-training paradigms)
[//]: # ( - [ ] (Non-)Contrastive learning)
[//]: # ( - [ ] Masked Autoencoder)
[//]: # ( - [ ] Next token prediction)
[//]: # (- [ ] Decoder Transformer)
[//]: # (- [ ] Data augmentations - down sampling, subsampling, aggregation)
## ⚙️ Installation
1. Clone repository:
```shell
git clone https://github.com/SalesforceAIResearch/uni2ts.git
cd uni2ts
```
2) Create virtual environment:
```shell
virtualenv venv
. venv/bin/activate
```
3) Build from source:
```shell
pip install -e '.[notebook]'
```
4) Create a `.env` file:
```shell
touch .env
```
## 🏃 Getting Started
Let's see a simple example on how to use Uni2TS to make zero-shot forecasts from a pre-trained model.
We first load our data using pandas, in the form of a wide DataFrame.
Uni2TS relies on GluonTS for inference as it provides many convenience functions for time series forecasting, such as splitting a dataset into a train/test split and performing rolling evaluations, as demonstrated below.
```python
import torch
import matplotlib.pyplot as plt
import pandas as pd
from gluonts.dataset.pandas import PandasDataset
from gluonts.dataset.split import split
from huggingface_hub import hf_hub_download
from uni2ts.eval_util.plot import plot_single
from uni2ts.model.moirai import MoiraiForecast, MoiraiModule
SIZE = "small" # model size: choose from {'small', 'base', 'large'}
PDT = 20 # prediction length: any positive integer
CTX = 200 # context length: any positive integer
PSZ = "auto" # patch size: choose from {"auto", 8, 16, 32, 64, 128}
BSZ = 32 # batch size: any positive integer
TEST = 100 # test set length: any positive integer
# Read data into pandas DataFrame
url = (
"https://gist.githubusercontent.com/rsnirwan/c8c8654a98350fadd229b00167174ec4"
"/raw/a42101c7786d4bc7695228a0f2c8cea41340e18f/ts_wide.csv"
)
df = pd.read_csv(url, index_col=0, parse_dates=True)
# Convert into GluonTS dataset
ds = PandasDataset(dict(df))
# Split into train/test set
train, test_template = split(
ds, offset=-TEST
) # assign last TEST time steps as test set
# Construct rolling window evaluation
test_data = test_template.generate_instances(
prediction_length=PDT, # number of time steps for each prediction
windows=TEST // PDT, # number of windows in rolling window evaluation
distance=PDT, # number of time steps between each window - distance=PDT for non-overlapping windows
)
# Prepare pre-trained model by downloading model weights from huggingface hub
model = MoiraiForecast(
module=MoiraiModule.from_pretrained(f"Salesforce/moirai-1.0-R-{SIZE}"),
prediction_length=PDT,
context_length=CTX,
patch_size=PSZ,
num_samples=100,
target_dim=1,
feat_dynamic_real_dim=ds.num_feat_dynamic_real,
past_feat_dynamic_real_dim=ds.num_past_feat_dynamic_real,
)
predictor = model.create_predictor(batch_size=BSZ)
forecasts = predictor.predict(test_data.input)
input_it = iter(test_data.input)
label_it = iter(test_data.label)
forecast_it = iter(forecasts)
inp = next(input_it)
label = next(label_it)
forecast = next(forecast_it)
plot_single(
inp,
label,
forecast,
context_length=200,
name="pred",
show_label=True,
)
plt.show()
```
## 📔 Jupyter Notebook Examples
See the [example folder](example) for more examples on common tasks, e.g. visualizing forecasts, predicting from pandas DataFrame, etc.
## 💻 Command Line Interface
We provide several scripts which act as a [command line interface](cli) to easily run fine-tuning, evaluation, and even pre-training jobs.
[Configurations](cli/conf) are managed with the [Hydra](https://hydra.cc/) framework.
### Fine-tuning
Firstly, let's see how to use Uni2TS to fine-tune a pre-trained model on your custom dataset.
Uni2TS uses the [Hugging Face datasets library](https://github.com/huggingface/datasets) to handle data loading, and we first need to convert your dataset into the Uni2TS format.
If your dataset is a simple pandas DataFrame, we can easily process your dataset with the following script.
We'll use the ETTh1 dataset from the popular [Long Sequence Forecasting benchmark](https://github.com/thuml/Time-Series-Library) for this example.
For more complex use cases, see [this notebook](example/prepare_data.ipynb) for more in-depth examples on how to use your custom dataset with Uni2TS.
1. To begin the process, add the path to the directory where you want to save the processed dataset into the ```.env``` file.
```shell
echo "CUSTOM_DATA_PATH=PATH_TO_SAVE" >> .env
```
2. Run the following script to process the dataset into the required format. For the ```dataset_type``` option, we support `wide`, `long` and `wide_multivariate`.
```shell
python -m uni2ts.data.builder.simple ETTh1 dataset/ETT-small/ETTh1.csv --dataset_type wide
```
However, we may want validation set during fine-tuning to perform hyperparameter tuning or early stopping.
To additionally split the dataset into a train and validation split we can use the mutually exclusive ```date_offset``` (datetime string) or ```offset``` (integer) options which determines the last time step of the train set.
The validation set will be saved as DATASET_NAME_eval.
```shell
python -m uni2ts.data.builder.simple ETTh1 dataset/ETT-small/ETTh1.csv --date_offset '2017-10-23 23:00:00'
```
3. Finally, we can simply run the fine-tuning script with the appropriate [training](cli/conf/finetune/data/etth1.yaml) and [validation](cli/conf/finetune/val_data/etth1.yaml) data configuration files.
```shell
python -m cli.train \
-cp conf/finetune \
run_name=example_run \
model=moirai_1.0_R_small \
data=etth1 \
val_data=etth1
```
### Evaluation
The evaluation script can be used to calculate evaluation metrics such as MSE, MASE, CRPS, and so on (see the [configuration file](cli/conf/eval/default.yaml)).
Given a test split (see previous section on processing datasets), we can run the following command to evaluate it:
```shell
python -m cli.eval \
run_name=example_eval_1 \
model=moirai_1.0_R_small \
model.patch_size=32 \
model.context_length=1000 \
data=etth1_test
```
Alternatively, we provide access to popular datasets, and can be toggled via the [data configurations](cli/conf/eval/data).
As an example, say we want to perform evaluation, again on the ETTh1 dataset from the popular [Long Sequence Forecasting benchmark](https://github.com/thuml/Time-Series-Library).
We first need to download the pre-processed datasets and put them in the correct directory, by setting up the TSLib repository and following the instructions.
Then, assign the dataset directory to the `LSF_PATH` environment variable:
```shell
echo "LSF_PATH=PATH_TO_TSLIB/dataset" >> .env
```
Thereafter, simply run the following script with the predefined [Hydra config file](cli/conf/eval/data/lsf_test.yaml):
```shell
python -m cli.eval \
run_name=example_eval_2 \
model=moirai_1.0_R_small \
model.patch_size=32 \
model.context_length=1000 \
data=lsf_test \
data.dataset_name=ETTh1 \
data.prediction_length=96
```
### Pre-training
Now, let's see how you can pre-train your own model.
We'll start with preparing the data for pre-training first, by downloading the [Large-scale Open Time Series Archive (LOTSA data)](https://huggingface.co/datasets/Salesforce/lotsa_data/).
Assuming you've already createed a `.env` file, run the following commands.
```shell
huggingface-cli download Salesforce/lotsa_data --repo-type=dataset --local-dir PATH_TO_SAVE
echo "LOTSA_V1_PATH=PATH_TO_SAVE" >> .env
```
Then, we can simply run the following script to start a pre-training job.
See the [relevant](cli/train.py) [files](cli/conf/pretrain) on how to further customize the settings.
```shell
python -m cli.train \
-cp conf/pretrain \
run_name=first_run \
model=moirai_small \
data=lotsa_v1_unweighted
```
## 👀 Citing Uni2TS
If you're using Uni2TS in your research or applications, please cite it using this BibTeX:
```markdown
@article{woo2024unified,
title={Unified Training of Universal Time Series Forecasting Transformers},
author={Woo, Gerald and Liu, Chenghao and Kumar, Akshat and Xiong, Caiming and Savarese, Silvio and Sahoo, Doyen},
journal={arXiv preprint arXiv:2402.02592},
year={2024}
}
```
Raw data
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"keywords": "Deep Learning, PyTorch, Time Series Forecasting, Transformer",
"author": "Akshat Kumar, Caiming Xiong, Silvio Savarese, Doyen Sahoo",
"author_email": "Gerald Woo <gwoo@salesforce.com>, Chenghao Liu <chenghao.liu@salesforce.com>",
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"description": "# Unified Training of Universal Time Series Forecasting Transformers\n[Paper](https://arxiv.org/abs/2402.02592) | [Blog Post](https://blog.salesforceairesearch.com/moirai/)\n\nUni2TS is a PyTorch based library for research and applications related to Time Series Transformers.\nThis library aims to provide a unified solution to large-scale pre-training of Universal Time Series Transformers.\nUni2TS also provides tools for fine-tuning, inference, and evaluation for time series forecasting.\n\n## \ud83c\udf89 What's New\n\n* May 2024: The Uni2TS paper has been accepted to ICML 2024 as an Oral presentation!\n\n* Mar 2024: Release of Uni2TS library, along with [Moirai-1.0-R](https://huggingface.co/collections/Salesforce/moirai-10-r-models-65c8d3a94c51428c300e0742) and [LOTSA data](https://huggingface.co/datasets/Salesforce/lotsa_data/)!\n\n## \u2705 TODO\n\n- [ ] Improve docstrings and documentation\n\n[//]: # (- [ ] Support more pre-training paradigms)\n\n[//]: # ( - [ ] (Non-)Contrastive learning)\n\n[//]: # ( - [ ] Masked Autoencoder)\n\n[//]: # ( - [ ] Next token prediction)\n\n[//]: # (- [ ] Decoder Transformer)\n\n[//]: # (- [ ] Data augmentations - down sampling, subsampling, aggregation)\n\n## \u2699\ufe0f Installation\n\n1. Clone repository:\n```shell\ngit clone https://github.com/SalesforceAIResearch/uni2ts.git\ncd uni2ts\n```\n\n2) Create virtual environment:\n```shell\nvirtualenv venv\n. venv/bin/activate\n```\n\n3) Build from source:\n```shell\npip install -e '.[notebook]'\n```\n\n4) Create a `.env` file:\n```shell\ntouch .env\n```\n\n## \ud83c\udfc3 Getting Started\n\nLet's see a simple example on how to use Uni2TS to make zero-shot forecasts from a pre-trained model. \nWe first load our data using pandas, in the form of a wide DataFrame. \nUni2TS relies on GluonTS for inference as it provides many convenience functions for time series forecasting, such as splitting a dataset into a train/test split and performing rolling evaluations, as demonstrated below.\n\n```python\nimport torch\nimport matplotlib.pyplot as plt\nimport pandas as pd\nfrom gluonts.dataset.pandas import PandasDataset\nfrom gluonts.dataset.split import split\nfrom huggingface_hub import hf_hub_download\n\nfrom uni2ts.eval_util.plot import plot_single\nfrom uni2ts.model.moirai import MoiraiForecast, MoiraiModule\n\n\nSIZE = \"small\" # model size: choose from {'small', 'base', 'large'}\nPDT = 20 # prediction length: any positive integer\nCTX = 200 # context length: any positive integer\nPSZ = \"auto\" # patch size: choose from {\"auto\", 8, 16, 32, 64, 128}\nBSZ = 32 # batch size: any positive integer\nTEST = 100 # test set length: any positive integer\n\n# Read data into pandas DataFrame\nurl = (\n \"https://gist.githubusercontent.com/rsnirwan/c8c8654a98350fadd229b00167174ec4\"\n \"/raw/a42101c7786d4bc7695228a0f2c8cea41340e18f/ts_wide.csv\"\n)\ndf = pd.read_csv(url, index_col=0, parse_dates=True)\n\n# Convert into GluonTS dataset\nds = PandasDataset(dict(df))\n\n# Split into train/test set\ntrain, test_template = split(\n ds, offset=-TEST\n) # assign last TEST time steps as test set\n\n# Construct rolling window evaluation\ntest_data = test_template.generate_instances(\n prediction_length=PDT, # number of time steps for each prediction\n windows=TEST // PDT, # number of windows in rolling window evaluation\n distance=PDT, # number of time steps between each window - distance=PDT for non-overlapping windows\n)\n\n# Prepare pre-trained model by downloading model weights from huggingface hub\nmodel = MoiraiForecast(\n module=MoiraiModule.from_pretrained(f\"Salesforce/moirai-1.0-R-{SIZE}\"),\n prediction_length=PDT,\n context_length=CTX,\n patch_size=PSZ,\n num_samples=100,\n target_dim=1,\n feat_dynamic_real_dim=ds.num_feat_dynamic_real,\n past_feat_dynamic_real_dim=ds.num_past_feat_dynamic_real,\n)\n\npredictor = model.create_predictor(batch_size=BSZ)\nforecasts = predictor.predict(test_data.input)\n\ninput_it = iter(test_data.input)\nlabel_it = iter(test_data.label)\nforecast_it = iter(forecasts)\n\ninp = next(input_it)\nlabel = next(label_it)\nforecast = next(forecast_it)\n\nplot_single(\n inp, \n label, \n forecast, \n context_length=200,\n name=\"pred\",\n show_label=True,\n)\nplt.show()\n```\n\n## \ud83d\udcd4 Jupyter Notebook Examples\nSee the [example folder](example) for more examples on common tasks, e.g. visualizing forecasts, predicting from pandas DataFrame, etc.\n\n## \ud83d\udcbb Command Line Interface\nWe provide several scripts which act as a [command line interface](cli) to easily run fine-tuning, evaluation, and even pre-training jobs. \n[Configurations](cli/conf) are managed with the [Hydra](https://hydra.cc/) framework.\n\n### Fine-tuning\nFirstly, let's see how to use Uni2TS to fine-tune a pre-trained model on your custom dataset. \nUni2TS uses the [Hugging Face datasets library](https://github.com/huggingface/datasets) to handle data loading, and we first need to convert your dataset into the Uni2TS format. \nIf your dataset is a simple pandas DataFrame, we can easily process your dataset with the following script.\nWe'll use the ETTh1 dataset from the popular [Long Sequence Forecasting benchmark](https://github.com/thuml/Time-Series-Library) for this example.\nFor more complex use cases, see [this notebook](example/prepare_data.ipynb) for more in-depth examples on how to use your custom dataset with Uni2TS.\n\n1. To begin the process, add the path to the directory where you want to save the processed dataset into the ```.env``` file.\n```shell\necho \"CUSTOM_DATA_PATH=PATH_TO_SAVE\" >> .env\n```\n\n2. Run the following script to process the dataset into the required format. For the ```dataset_type``` option, we support `wide`, `long` and `wide_multivariate`.\n```shell\npython -m uni2ts.data.builder.simple ETTh1 dataset/ETT-small/ETTh1.csv --dataset_type wide\n```\n\nHowever, we may want validation set during fine-tuning to perform hyperparameter tuning or early stopping.\nTo additionally split the dataset into a train and validation split we can use the mutually exclusive ```date_offset``` (datetime string) or ```offset``` (integer) options which determines the last time step of the train set.\nThe validation set will be saved as DATASET_NAME_eval.\n```shell\npython -m uni2ts.data.builder.simple ETTh1 dataset/ETT-small/ETTh1.csv --date_offset '2017-10-23 23:00:00'\n```\n\n3. Finally, we can simply run the fine-tuning script with the appropriate [training](cli/conf/finetune/data/etth1.yaml) and [validation](cli/conf/finetune/val_data/etth1.yaml) data configuration files.\n```shell\npython -m cli.train \\\n -cp conf/finetune \\\n run_name=example_run \\ \n model=moirai_1.0_R_small \\ \n data=etth1 \\ \n val_data=etth1 \n```\n\n### Evaluation\n\nThe evaluation script can be used to calculate evaluation metrics such as MSE, MASE, CRPS, and so on (see the [configuration file](cli/conf/eval/default.yaml)). \n\nGiven a test split (see previous section on processing datasets), we can run the following command to evaluate it:\n```shell\npython -m cli.eval \\ \n run_name=example_eval_1 \\\n model=moirai_1.0_R_small \\\n model.patch_size=32 \\ \n model.context_length=1000 \\\n data=etth1_test\n```\n\nAlternatively, we provide access to popular datasets, and can be toggled via the [data configurations](cli/conf/eval/data).\nAs an example, say we want to perform evaluation, again on the ETTh1 dataset from the popular [Long Sequence Forecasting benchmark](https://github.com/thuml/Time-Series-Library).\nWe first need to download the pre-processed datasets and put them in the correct directory, by setting up the TSLib repository and following the instructions.\nThen, assign the dataset directory to the `LSF_PATH` environment variable:\n```shell\necho \"LSF_PATH=PATH_TO_TSLIB/dataset\" >> .env\n```\n\nThereafter, simply run the following script with the predefined [Hydra config file](cli/conf/eval/data/lsf_test.yaml):\n```shell\npython -m cli.eval \\ \n run_name=example_eval_2 \\\n model=moirai_1.0_R_small \\\n model.patch_size=32 \\ \n model.context_length=1000 \\ \n data=lsf_test \\\n data.dataset_name=ETTh1 \\\n data.prediction_length=96 \n```\n\n### Pre-training\nNow, let's see how you can pre-train your own model. \nWe'll start with preparing the data for pre-training first, by downloading the [Large-scale Open Time Series Archive (LOTSA data)](https://huggingface.co/datasets/Salesforce/lotsa_data/).\nAssuming you've already createed a `.env` file, run the following commands.\n```shell\nhuggingface-cli download Salesforce/lotsa_data --repo-type=dataset --local-dir PATH_TO_SAVE\necho \"LOTSA_V1_PATH=PATH_TO_SAVE\" >> .env\n```\n\nThen, we can simply run the following script to start a pre-training job. \nSee the [relevant](cli/train.py) [files](cli/conf/pretrain) on how to further customize the settings.\n```shell\npython -m cli.train \\\n -cp conf/pretrain \\\n run_name=first_run \\\n model=moirai_small \\\n data=lotsa_v1_unweighted\n```\n\n## \ud83d\udc40 Citing Uni2TS\n\nIf you're using Uni2TS in your research or applications, please cite it using this BibTeX:\n\n```markdown\n@article{woo2024unified,\n title={Unified Training of Universal Time Series Forecasting Transformers},\n author={Woo, Gerald and Liu, Chenghao and Kumar, Akshat and Xiong, Caiming and Savarese, Silvio and Sahoo, Doyen},\n journal={arXiv preprint arXiv:2402.02592},\n year={2024}\n}\n```",
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