Benchmark repository for Lasso

|Build Status| |Python 3.6+|

Benchopt is a package to simplify and make more transparent and reproducible the comparisons of optimization algorithms. The Lasso consists in solving the following program:

$$ \min_w \, \tfrac{1}{2} \Vert y - Xw \Vert^2_2 + \lambda \Vert w\Vert_1 $$

where $n$ (or n_samples) stands for the number of samples, $p$ (or n_features) stands for the number of features and

$$ y \in \mathbb{R}^n, \, \, X \in \mathbb{R}^{n \times p} $$

Install

This benchmark can be run using the following commands:

.. code-block::

$ pip install -U benchopt $ git clone https://github.com/benchopt/benchmark_lasso $ cd benchmark_lasso/

To demonstrate the use of benchopt, one can run, from the benchmark_lasso folder:

.. code-block::

$ benchopt install . -s sklearn -s python-pgd --env $ benchopt run . --config example_config.yml --env

Alternatively, one can use the command line interface to select which problems, datasets and solvers are used:

.. code-block::

$ benchopt run -s sklearn -d leukemia --max-runs 10 --n-repetitions 5

Use benchopt run -h for more details about these options, or visit https://benchopt.github.io/api.html.

Troubleshooting

If you run into some errors when running the examples present in this Readme, try installing the development version of benchopt:

.. code-block::

$ pip install -U git+https://github.com/benchopt/benchopt

If issues persist, you can also try running the benchmark in local mode with the -l option, e.g.:

.. code-block::

$ benchopt run . -l -s sklearn -d leukemia --max-runs 10 --n-repetitions 10

Note that in this case, only solvers which dependencies are installed in the current env will be run.

.. |Build Status| image:: https://github.com/benchopt/benchmark_lasso/workflows/Tests/badge.svg :target: https://github.com/benchopt/benchmark_lasso/actions .. |Python 3.6+| image:: https://img.shields.io/badge/python-3.6%2B-blue :target: https://www.python.org/downloads/release/python-360/