src/reqs_optional/requirements_optional_langchain.metrics.txt

bert_score>=0.3.13
git+https://github.com/huggingface/evaluate@7d7d81dd3ffec0812e2edb09f86b3b1e31d61118
sacremoses>=0.0.53
absl-py
nltk
rouge_score>=0.1.2
# below install tensorflow and downgrades numpy, so heavy dependency
git+https://github.com/google-research/bleurt.git