amici

Advanced Multilanguage Interface for CVODES and IDAS

About

AMICI provides a multi-language (Python, C++, Matlab) interface for the SUNDIALS solvers CVODES (for ordinary differential equations) and IDAS (for algebraic differential equations). AMICI allows the user to read differential equation models specified as SBML or PySB and automatically compiles such models into Python modules, C++ libraries or Matlab .mex simulation files.

In contrast to the (no longer maintained) sundialsTB Matlab interface, all necessary functions are transformed into native C++ code, which allows for a significantly faster simulation.

Beyond forward integration, the compiled simulation file also allows for forward sensitivity analysis, steady state sensitivity analysis and adjoint sensitivity analysis for likelihood-based output functions.

The interface was designed to provide routines for efficient gradient computation in parameter estimation of biochemical reaction models, but it is also applicable to a wider range of differential equation constrained optimization problems.

Current build status

Features

• SBML import
• PySB import
• Generation of C++ code for model simulation and sensitivity computation
• Access to and high customizability of CVODES and IDAS solver
• Python, C++, Matlab interface
• Sensitivity analysis
  • forward
  • steady state
  • adjoint
  • first- and second-order
• Pre-equilibration and pre-simulation conditions
• Support for discrete events and logical operations

Interfaces & workflow

The AMICI workflow starts with importing a model from either SBML (Matlab, Python), PySB (Python), or a Matlab definition of the model (Matlab-only). From this input, all equations for model simulation are derived symbolically and C++ code is generated. This code is then compiled into a C++ library, a Python module, or a Matlab .mex file and is then used for model simulation.

Getting started

The AMICI source code is available at https://github.com/AMICI-dev/AMICI/. To install AMICI, first read the installation instructions for Python, C++ or Matlab. There are also instructions for using AMICI inside containers.

To get you started with Python-AMICI, the best way might be checking out this Jupyter notebook .

To get started with Matlab-AMICI, various examples are available in matlab/examples/.

Comprehensive documentation is available at https://amici.readthedocs.io/en/latest/.

Any contributions to AMICI are welcome (code, bug reports, suggestions for improvements, ...).

Getting help

In case of questions or problems with using AMICI, feel free to post an issue on GitHub. We are trying to get back to you quickly.

Projects using AMICI

There are several tools for parameter estimation offering good integration with AMICI:

• pyPESTO: Python library for optimization, sampling and uncertainty analysis
• pyABC: Python library for parallel and scalable ABC-SMC (Approximate Bayesian Computation - Sequential Monte Carlo)
• parPE: C++ library for parameter estimation of ODE models offering distributed memory parallelism with focus on problems with many simulation conditions.

Publications

Citeable DOI for the latest AMICI release:

There is a list of publications using AMICI. If you used AMICI in your work, we are happy to include your project, please let us know via a GitHub issue.

When using AMICI in your project, please cite

• Fröhlich, F., Weindl, D., Schälte, Y., Pathirana, D., Paszkowski, Ł., Lines, G.T., Stapor, P. and Hasenauer, J., 2021. AMICI: High-Performance Sensitivity Analysis for Large Ordinary Differential Equation Models. Bioinformatics, btab227, DOI:10.1093/bioinformatics/btab227.

@article{frohlich2020amici,
  title={AMICI: High-Performance Sensitivity Analysis for Large Ordinary Differential Equation Models},
  author={Fr{\"o}hlich, Fabian and Weindl, Daniel and Sch{\"a}lte, Yannik and Pathirana, Dilan and Paszkowski, {\L}ukasz and Lines, Glenn Terje and Stapor, Paul and Hasenauer, Jan},
  journal = {Bioinformatics},
  year = {2021},
  month = {04},
  issn = {1367-4803},
  doi = {10.1093/bioinformatics/btab227},
  note = {btab227},
  eprint = {https://academic.oup.com/bioinformatics/advance-article-pdf/doi/10.1093/bioinformatics/btab227/36866220/btab227.pdf},
}

When presenting work that employs AMICI, feel free to use one of the icons in documentation/gfx/, which are available under a CC0 license: