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Jury

Comprehensive NLP Evaluation System

From obss·Updated June 15, 2026·View on GitHub·

A comprehensive toolkit for evaluating NLP experiments offering various automated metrics. Jury offers a smooth and easy-to-use interface. It uses a more advanced version of [evaluate](https://github.com/huggingface/evaluate/) design for underlying metric computation, so that adding custom metric is easy as extending proper class. The project is written primarily in Python, distributed under the MIT License license, first published in 2021. Key topics include: datasets, evaluate, evaluation, huggingface, machine-learning.

Latest release: 2.3.1v2.3.1
May 20, 2024View Changelog →
<h1 align="center">Jury</h1> <p align="center"> <a href="https://pypi.org/project/jury"><img src="https://img.shields.io/pypi/pyversions/jury" alt="Python versions"></a> <a href="https://pepy.tech/project/jury"><img src="https://pepy.tech/badge/jury" alt="downloads"></a> <a href="https://pypi.org/project/jury"><img src="https://img.shields.io/pypi/v/jury?color=blue" alt="PyPI version"></a> <a href="https://github.com/obss/jury/releases/latest"><img alt="Latest Release" src="https://img.shields.io/github/release-date/obss/jury"></a> <a href="https://colab.research.google.com/github/obss/jury/blob/main/examples/jury_evaluate.ipynb" target="_blank"><img alt="Open in Colab" src="https://colab.research.google.com/assets/colab-badge.svg"></a> <br> <a href="https://github.com/obss/jury/actions"><img alt="Build status" src="https://github.com/obss/jury/actions/workflows/ci.yml/badge.svg"></a> <a href="https://libraries.io/pypi/jury"><img alt="Dependencies" src="https://img.shields.io/librariesio/github/obss/jury"></a> <a href="https://github.com/psf/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a> <a href="https://github.com/obss/jury/blob/main/LICENSE"><img alt="License: MIT" src="https://img.shields.io/pypi/l/jury"></a> <br> <a href="https://doi.org/10.48550/arXiv.2310.02040"><img src="https://img.shields.io/badge/DOI-10.48550%2FarXiv.2310.02040-blue" alt="DOI"></a> </p>

A comprehensive toolkit for evaluating NLP experiments offering various automated metrics. Jury offers a smooth and easy-to-use interface. It uses a more advanced version of evaluate design for underlying metric computation, so that adding custom metric is easy as extending proper class.

Main advantages that Jury offers are:

  • Easy to use for any NLP project.
  • Unified structure for computation input across all metrics.
  • Calculate many metrics at once.
  • Metrics calculations can be handled concurrently to save processing time.
  • It seamlessly supports evaluation for multiple predictions/multiple references.

To see more, check the official Jury blog post.

🔥 News

  • (2024.05.29) Retraction Watch Post regarding retraction of a paper has been posted. The plagiarised paper has been retracted.
  • (2023.10.03) Jury paper is out currently is on arxiv. Please cite this paper if your work use Jury, and if your publication material will be submitted to the venues after this date.
  • (2023.07.30) Public notice: You can reach our official Public Notice document that poses a claim about plagiarism of the work, jury, presented in this codebase.

Available Metrics

The table below shows the current support status for available metrics.

MetricJury SupportHF/evaluate Support
Accuracy-Numeric:heavy_check_mark::white_check_mark:
Accuracy-Text:heavy_check_mark::x:
Bartscore:heavy_check_mark::x:
Bertscore:heavy_check_mark::white_check_mark:
Bleu:heavy_check_mark::white_check_mark:
Bleurt:heavy_check_mark::white_check_mark:
CER:heavy_check_mark::white_check_mark:
CHRF:heavy_check_mark::white_check_mark:
COMET:heavy_check_mark::white_check_mark:
F1-Numeric:heavy_check_mark::white_check_mark:
F1-Text:heavy_check_mark::x:
METEOR:heavy_check_mark::white_check_mark:
Precision-Numeric:heavy_check_mark::white_check_mark:
Precision-Text:heavy_check_mark::x:
Prism:heavy_check_mark::x:
Recall-Numeric:heavy_check_mark::white_check_mark:
Recall-Text:heavy_check_mark::x:
ROUGE:heavy_check_mark::white_check_mark:
SacreBleu:heavy_check_mark::white_check_mark:
Seqeval:heavy_check_mark::white_check_mark:
Squad:heavy_check_mark::white_check_mark:
TER:heavy_check_mark::white_check_mark:
WER:heavy_check_mark::white_check_mark:
Other metrics*:white_check_mark::white_check_mark:

* Placeholder for the rest of the metrics available in evaluate package apart from those which are present in the
table.

Notes

  • The entry :heavy_check_mark: represents that full Jury support is available meaning that all combinations of input
    types (single prediction & single reference, single prediction & multiple references, multiple predictions & multiple
    references) are supported

  • The entry :white_check_mark: means that this metric is supported (for Jury through the evaluate), so that it
    can (and should) be used just like the evaluate metric as instructed in evaluate implementation although
    unfortunately full Jury support for those metrics are not yet available.

Request for a New Metric

For the request of a new metric please open an issue providing the minimum information. Also, PRs addressing new metric
supports are welcomed :).

<div align="center"> Installation </div>

Through pip,

pip install jury

or build from source,

git clone https://github.com/obss/jury.git
cd jury
python setup.py install

NOTE: There may be malfunctions of some metrics depending on sacrebleu package on Windows machines which is
mainly due to the package pywin32. For this, we fixed pywin32 version on our setup config for Windows platforms.
However, if pywin32 causes trouble in your environment we strongly recommend using conda manager install the package
as conda install pywin32.

<div align="center"> Usage </div>

API Usage

It is only two lines of code to evaluate generated outputs.

python
from jury import Jury scorer = Jury() predictions = [ ["the cat is on the mat", "There is cat playing on the mat"], ["Look! a wonderful day."] ] references = [ ["the cat is playing on the mat.", "The cat plays on the mat."], ["Today is a wonderful day", "The weather outside is wonderful."] ] scores = scorer(predictions=predictions, references=references)

Specify metrics you want to use on instantiation.

python
scorer = Jury(metrics=["bleu", "meteor"]) scores = scorer(predictions, references)

Use of Metrics standalone

You can directly import metrics from jury.metrics as classes, and then instantiate and use as desired.

python
from jury.metrics import Bleu bleu = Bleu.construct() score = bleu.compute(predictions=predictions, references=references)

The additional parameters can either be specified on compute()

python
from jury.metrics import Bleu bleu = Bleu.construct() score = bleu.compute(predictions=predictions, references=references, max_order=4)

, or alternatively on instantiation

python
from jury.metrics import Bleu bleu = Bleu.construct(compute_kwargs={"max_order": 1}) score = bleu.compute(predictions=predictions, references=references)

Note that you can seemlessly access both jury and evaluate metrics through jury.load_metric.

python
import jury bleu = jury.load_metric("bleu") bleu_1 = jury.load_metric("bleu", resulting_name="bleu_1", compute_kwargs={"max_order": 1}) # metrics not available in `jury` but in `evaluate` wer = jury.load_metric("competition_math") # It falls back to `evaluate` package with a warning

CLI Usage

You can specify predictions file and references file paths and get the resulting scores. Each line should be paired in both files. You can optionally provide reduce function and an export path for results to be written.

jury eval --predictions /path/to/predictions.txt --references /path/to/references.txt --reduce_fn max --export /path/to/export.txt

You can also provide prediction folders and reference folders to evaluate multiple experiments. In this set up, however, it is required that the prediction and references files you need to evaluate as a pair have the same file name. These common names are paired together for prediction and reference.

jury eval --predictions /path/to/predictions_folder --references /path/to/references_folder --reduce_fn max --export /path/to/export.txt

If you want to specify metrics, and do not want to use default, specify it in config file (json) in metrics key.

json
{ "predictions": "/path/to/predictions.txt", "references": "/path/to/references.txt", "reduce_fn": "max", "metrics": [ "bleu", "meteor" ] }

Then, you can call jury eval with config argument.

jury eval --config path/to/config.json

Custom Metrics

You can use custom metrics with inheriting jury.metrics.Metric, you can see current metrics implemented on Jury from jury/metrics. Jury falls back to evaluate implementation of metrics for the ones that are currently not supported by Jury, you can see the metrics available for evaluate on evaluate/metrics.

Jury itself uses evaluate.Metric as a base class to drive its own base class as jury.metrics.Metric. The interface is similar; however, Jury makes the metrics to take a unified input type by handling the inputs for each metrics, and allows supporting several input types as;

  • single prediction & single reference
  • single prediction & multiple reference
  • multiple prediction & multiple reference

As a custom metric both base classes can be used; however, we strongly recommend using jury.metrics.Metric as it has several advantages such as supporting computations for the input types above or unifying the type of the input.

python
from jury.metrics import MetricForTask class CustomMetric(MetricForTask): def _compute_single_pred_single_ref( self, predictions, references, reduce_fn = None, **kwargs ): raise NotImplementedError def _compute_single_pred_multi_ref( self, predictions, references, reduce_fn = None, **kwargs ): raise NotImplementedError def _compute_multi_pred_multi_ref( self, predictions, references, reduce_fn = None, **kwargs ): raise NotImplementedError

For more details, have a look at base metric implementation jury.metrics.Metric

<div align="center"> Contributing </div>

PRs are welcomed as always :)

Installation

git clone https://github.com/obss/jury.git
cd jury
pip install -e ".[dev]"

Also, you need to install the packages which are available through a git source separately with the following command.
For the folks who are curious about "why?"; a short explaination is that PYPI does not allow indexing a package which
are directly dependent on non-pypi packages due to security reasons. The file requirements-dev.txt includes packages
which are currently only available through a git source, or they are PYPI packages with no recent release or
incompatible with Jury, so that they are added as git sources or pointing to specific commits.

pip install -r requirements-dev.txt

Tests

To tests simply run.

python tests/run_tests.py

Code Style

To check code style,

python tests/run_code_style.py check

To format codebase,

python tests/run_code_style.py format

<div align="center"> Citation </div>

If you use this package in your work, please cite it as:

@misc{cavusoglu2023jury,
  title={Jury: A Comprehensive Evaluation Toolkit}, 
  author={Devrim Cavusoglu and Ulas Sert and Secil Sen and Sinan Altinuc},
  year={2023},
  eprint={2310.02040},
  archivePrefix={arXiv},
  primaryClass={cs.CL},
  doi={10.48550/arXiv.2310.02040}
}

Community Interaction

We use the GitHub Issue Tracker to track issues in general. Issues can be bug reports, feature requests or implementation of a new metric type. Please refer to the related issue template for opening new issues.

Location
Bug ReportBug Report Template
New Metric RequestRequest Metric Implementation
All other issues and questionsGeneral Issues

<div align="center"> License </div>

Licensed under the MIT License.

Contributors

Showing top 8 contributors by commit count.

View all contributors on GitHub →

This article is auto-generated from obss/jury via the GitHub API.Last fetched: 6/26/2026