🤗 Evaluate is a library that makes evaluating and comparing models and reporting their performance easier and more standardized.

It currently contains:

implementations of dozens of popular metrics: the existing metrics cover a variety of tasks spanning from NLP to Computer Vision, and include dataset-specific metrics for datasets. With a simple command like accuracy = load("accuracy"), get any of these metrics ready to use for evaluating a ML model in any framework (Numpy/Pandas/PyTorch/TensorFlow/JAX).
comparisons and measurements: comparisons are used to measure the difference between models and measurements are tools to evaluate datasets.
an easy way of adding new evaluation modules to the 🤗 Hub: you can create new evaluation modules and push them to a dedicated Space in the 🤗 Hub with evaluate-cli create [metric name], which allows you to see easily compare different metrics and their outputs for the same sets of references and predictions.

🔎 Find a metric, comparison, measurement on the Hub

🤗 Evaluate also has lots of useful features like:

Type checking: the input types are checked to make sure that you are using the right input formats for each metric
Metric cards: each metrics comes with a card that describes the values, limitations and their ranges, as well as providing examples of their usage and usefulness.
Community metrics: Metrics live on the Hugging Face Hub and you can easily add your own metrics for your project or to collaborate with others.

Installation

With pip

🤗 Evaluate can be installed from PyPi and has to be installed in a virtual environment (venv or conda for instance)

pip install evaluate

🤗 Evaluate's main methods are:

evaluate.list_evaluation_modules() to list the available metrics, comparisons and measurements
evaluate.load(module_name, **kwargs) to instantiate an evaluation module
results = module.compute(*kwargs) to compute the result of an evaluation module

First install the necessary dependencies to create a new metric with the following command:

pip install evaluate[template]

Then you can get started with the following command which will create a new folder for your metric and display the necessary steps:

evaluate-cli create "Awesome Metric"

See this step-by-step guide in the documentation for detailed instructions.

Thanks to @marella for letting us use the evaluate namespace on PyPi previously used by his library.