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---
inference: false
license: mit
language:
- en
metrics:
- exact_match
- f1
- bertscore
pipeline_tag: text-classification
---
# QA-Evaluation-Metrics
[](https://pypi.org/project/qa-metrics/)
QA-Evaluation-Metrics is a fast and lightweight Python package for evaluating question-answering models. It provides various basic metrics to assess the performance of QA models. Check out our paper [**CFMatcher**](https://arxiv.org/abs/2401.13170), a matching method going beyond token-level matching and is more efficient than LLM matchings but still retains competitive evaluation performance of transformer LLM models.
## Installation
To install the package, run the following command:
```bash
pip install qa-metrics
```
## Usage
The python package currently provides four QA evaluation metrics.
#### Exact Match
```python
from qa_metrics.em import em_match
reference_answer = ["Charles , Prince of Wales"]
candidate_answer = "Prince Charles"
match_result = em_match(reference_answer, candidate_answer)
print("Exact Match: ", match_result)
```
#### Transformer Match
Our fine-tuned BERT model is this repository. Our Package also supports downloading and matching directly. More Matching transformer models will be available 🔥🔥🔥
```python
from qa_metrics.transformerMatcher import TransformerMatcher
question = "who will take the throne after the queen dies"
tm = TransformerMatcher("bert")
scores = tm.get_scores(reference_answer, candidate_answer, question)
match_result = tm.transformer_match(reference_answer, candidate_answer, question)
print("Score: %s; CF Match: %s" % (scores, match_result))
```
#### F1 Score
```python
from qa_metrics.f1 import f1_match,f1_score_with_precision_recall
f1_stats = f1_score_with_precision_recall(reference_answer[0], candidate_answer)
print("F1 stats: ", f1_stats)
match_result = f1_match(reference_answer, candidate_answer, threshold=0.5)
print("F1 Match: ", match_result)
```
#### CFMatch
```python
from qa_metrics.cfm import CFMatcher
question = "who will take the throne after the queen dies"
cfm = CFMatcher()
scores = cfm.get_scores(reference_answer, candidate_answer, question)
match_result = cfm.cf_match(reference_answer, candidate_answer, question)
print("Score: %s; bert Match: %s" % (scores, match_result))
```
If you find this repo avialable, please cite our paper:
```bibtex
@misc{li2024cfmatch,
title={CFMatch: Aligning Automated Answer Equivalence Evaluation with Expert Judgments For Open-Domain Question Answering},
author={Zongxia Li and Ishani Mondal and Yijun Liang and Huy Nghiem and Jordan Boyd-Graber},
year={2024},
eprint={2401.13170},
archivePrefix={arXiv},
primaryClass={cs.CL}
}
```
## Updates
- [01/24/24] 🔥 The full paper is uploaded and can be accessed [here]([https://arxiv.org/abs/2310.14566](https://arxiv.org/abs/2401.13170)). The dataset is expanded and leaderboard is updated.
- Our Training Dataset is adapted and augmented from [Bulian et al](https://github.com/google-research-datasets/answer-equivalence-dataset). Our [dataset repo](https://github.com/zli12321/Answer_Equivalence_Dataset.git) includes the augmented training set and QA evaluation testing sets discussed in our paper.
- Now our model supports [distilroberta](https://huggingface.co/Zongxia/answer_equivalence_distilroberta), [distilbert](https://huggingface.co/Zongxia/answer_equivalence_distilbert), a smaller and more robust matching model than Bert!
## License
This project is licensed under the [MIT License](LICENSE.md) - see the LICENSE file for details.
## Contact
For any additional questions or comments, please contact [[email protected]]. |