--- template: overrides/main.html title: Getting Started --- # Getting Started Welcome to SysIdentPy's documentation! Learn how to get started with SysIdentPy in your project. Then, explore SysIdentPy's main concepts and discover additional resources to help you model dynamic systems and time series.

For comprehensive information on models, methods, and a wide range of examples and benchmarks implemented in SysIdentPy, check out our book:

Nonlinear System Identification and Forecasting: Theory and Practice With SysIdentPy

This book provides in-depth guidance to support your work with SysIdentPy.

🛠️ You can also explore the tutorials in the documentation for practical, hands-on examples.

## What is SysIdentPy SysIdentPy is an open-source Python module for System Identification using **NARMAX** models built on top of **numpy** and is distributed under the 3-Clause BSD license. SysIdentPy provides an easy-to-use and flexible framework for building Dynamical Nonlinear Models for time series and dynamic systems. With **SysIdentPy**, you can: - Build and customize nonlinear forecasting models. - Utilize state-of-the-art techniques for model structure selection and parameter estimation. - Experiment with neural NARX models and other advanced algorithms. ## Installation SysIdentPy is published as a [Python package] and can be installed with `pip`, ideally by using a [virtual environment]. If not, scroll down and expand the help box. Install with: 
pip install sysidentpy
pip install sysidentpy["all"]
pip install sysidentpy=="0.5.3"
pip install git+https://github.com/wilsonrljr/sysidentpy.git

If you don't have prior experience with Python, we recommend reading Using Python's pip to Manage Your Projects' Dependencies , which is a really good introduction on the mechanics of Python package management and helps you troubleshoot if you run into errors.

[Python package]: https://pypi.org/project/sysidentpy/ [virtual environment]: https://realpython.com/what-is-pip/#using-pip-in-a-python-virtual-environment [Using Python's pip to Manage Your Projects' Dependencies]: https://realpython.com/what-is-pip/ ## What are the main features of SysIdentPy?

🧩 NARMAX Philosophy

Build variations like NARX, NAR, ARMA, NFIR, and more.

📝 Model Structure Selection

Use methods like FROLS, MetaMSS, and combinations with parameter estimation techniques.

🔗 Basis Function

Choose from 8+ basis functions, combining linear and nonlinear types for custom NARMAX models.

🎯 Parameter Estimation

Over 15 parameter estimation methods for exploring various structure selection scenarios.

⚖️ Multiobjective Estimation

Minimize different objective functions using affine information for parameter estimation.

🔄 Model Simulation

Reproduce paper results easily with SimulateNARMAX. Test and compare published models effortlessly.

🤖 Neural NARX (PyTorch)

Integrate with PyTorch for custom neural NARX architectures using all PyTorch optimizers and loss functions.

🛠️ General Estimators

Compatible with scikit-learn, Catboost, and more for creating NARMAX models.

## Additional resources ## Do you like **SysIdentPy**? Would you like to help SysIdentPy, other users, and the author? You can "star" SysIdentPy in GitHub by clicking in the star button at the top right of the page: https://github.com/wilsonrljr/sysidentpy. ⭐️ Starring a repository makes it easy to find it later and help you to find similar projects on GitHub based on Github recommendation contents. Besides, by starring a repository also shows appreciation to the SysIdentPy maintainer for their work. [:octicons-star-fill-24:{ .mdx-heart }   Join our "Star" in github][wilsonrljr's sponsor profile]{ .md-button .md-button--primary .mdx-sponsorship-button } [wilsonrljr's sponsor profile]: https://github.com/sponsors/wilsonrljr