# Neural Networks with CasADi
**csnn** is a package for creating symbolic neural networks in [CasADi](https://web.casadi.org) in a [PyTorch](https://pytorch.org/)-like API style.
[](https://badge.fury.io/py/csnn)
[](https://github.com/FilippoAiraldi/casadi-neural-nets/blob/master/LICENSE)
[](https://github.com/FilippoAiraldi/casadi-neural-nets/actions/workflows/ci.yml)
[](https://www.pepy.tech/projects/csnn)
[](https://codeclimate.com/github/FilippoAiraldi/casadi-neural-nets/maintainability)
[](https://codeclimate.com/github/FilippoAiraldi/casadi-neural-nets/test_coverage)
[](https://github.com/psf/black)
---
## Introduction
The package allows the creation of neural networks with the symbolic language offered by [CasADi](https://web.casadi.org). This is done in a similar way to [PyTorch](https://pytorch.org/). For example, the following code allows us to create an MLP with a hidden layer:
```python
import casadi as cs
from csnn import set_sym_type, Linear, Sequential, ReLU
set_sym_type("SX") # can set either MX or SX
net = Sequential[cs.SX]((
Linear(4, 32),
ReLU(),
Linear(32, 1),
ReLU()
))
batch = 2
input = cs.SX.sym("in", batch, 4)
output = net(input)
assert output.shape == (batch, 1)
```
---
## Installation
To install the package, run
```bash
pip install csnn
```
**csnn** has the following dependencies
- [CasADi](https://web.casadi.org)
For playing around with the source code instead, run
```bash
git clone https://github.com/FilippoAiraldi/casadi-neural-nets.git
```
---
## License
The repository is provided under the MIT License. See the LICENSE file included with this repository.
---
## Author
[Filippo Airaldi](https://www.tudelft.nl/staff/f.airaldi/), PhD Candidate [f.airaldi@tudelft.nl | filippoairaldi@gmail.com]
> [Delft Center for Systems and Control](https://www.tudelft.nl/en/3me/about/departments/delft-center-for-systems-and-control/) in [Delft University of Technology](https://www.tudelft.nl/en/)
Copyright (c) 2023 Filippo Airaldi.
Copyright notice: Technische Universiteit Delft hereby disclaims all copyright interest in the program “csnn” (Nueral Networks with CasADi) written by the Author(s). Prof. Dr. Ir. Fred van Keulen, Dean of 3mE.
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"description": "# Neural Networks with CasADi\r\n\r\n**csnn** is a package for creating symbolic neural networks in [CasADi](https://web.casadi.org) in a [PyTorch](https://pytorch.org/)-like API style.\r\n\r\n[](https://badge.fury.io/py/csnn)\r\n[](https://github.com/FilippoAiraldi/casadi-neural-nets/blob/master/LICENSE)\r\n\r\n\r\n[](https://github.com/FilippoAiraldi/casadi-neural-nets/actions/workflows/ci.yml)\r\n[](https://www.pepy.tech/projects/csnn)\r\n[](https://codeclimate.com/github/FilippoAiraldi/casadi-neural-nets/maintainability)\r\n[](https://codeclimate.com/github/FilippoAiraldi/casadi-neural-nets/test_coverage)\r\n[](https://github.com/psf/black)\r\n\r\n---\r\n\r\n## Introduction\r\n\r\nThe package allows the creation of neural networks with the symbolic language offered by [CasADi](https://web.casadi.org). This is done in a similar way to [PyTorch](https://pytorch.org/). For example, the following code allows us to create an MLP with a hidden layer:\r\n\r\n```python\r\nimport casadi as cs\r\nfrom csnn import set_sym_type, Linear, Sequential, ReLU\r\n\r\nset_sym_type(\"SX\") # can set either MX or SX\r\n\r\nnet = Sequential[cs.SX]((\r\n Linear(4, 32),\r\n ReLU(),\r\n Linear(32, 1),\r\n ReLU()\r\n))\r\n\r\nbatch = 2\r\ninput = cs.SX.sym(\"in\", batch, 4)\r\noutput = net(input)\r\nassert output.shape == (batch, 1)\r\n```\r\n\r\n---\r\n\r\n## Installation\r\n\r\nTo install the package, run\r\n\r\n```bash\r\npip install csnn\r\n```\r\n\r\n**csnn** has the following dependencies\r\n\r\n- [CasADi](https://web.casadi.org)\r\n\r\nFor playing around with the source code instead, run\r\n\r\n```bash\r\ngit clone https://github.com/FilippoAiraldi/casadi-neural-nets.git\r\n```\r\n\r\n---\r\n\r\n## License\r\n\r\nThe repository is provided under the MIT License. See the LICENSE file included with this repository.\r\n\r\n---\r\n\r\n## Author\r\n\r\n[Filippo Airaldi](https://www.tudelft.nl/staff/f.airaldi/), PhD Candidate [f.airaldi@tudelft.nl | filippoairaldi@gmail.com]\r\n\r\n> [Delft Center for Systems and Control](https://www.tudelft.nl/en/3me/about/departments/delft-center-for-systems-and-control/) in [Delft University of Technology](https://www.tudelft.nl/en/)\r\n\r\nCopyright (c) 2023 Filippo Airaldi.\r\n\r\nCopyright notice: Technische Universiteit Delft hereby disclaims all copyright interest in the program \u201ccsnn\u201d (Nueral Networks with CasADi) written by the Author(s). Prof. Dr. Ir. Fred van Keulen, Dean of 3mE.\r\n",
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