📊 Pre:Ranker - reranking tools beforehand

News

• 2025.04.09: 🤗 preranker-v1, MTEB-ToolRetrieval released!

About Pre:Ranker

So many tools and functions to use? Try Pre:Ranker !
Pre:Ranker is designed to optimize the function calling process of modern LLMs by narrowing down the corpus of available tools based on a given query.
Check 🐱GITHUB for details!

Exapmle Usage

from sentence_transformers.cross_encoder import CrossEncoder

model = CrossEncoder('yjoonjang/preranker-v1')
model.eval()
pairs = [
    ["Is 'https://www.apple.com' available in the Wayback Machine on September 9, 2015?", "{'name': 'availability', 'description': 'Checks if a given URL is archived and currently accessible in the Wayback Machine.', 'parameters': {'url': {'description': 'The URL to check for availability in the Wayback Machine.', 'type': 'str', 'default': 'http://mashape.com'}, 'timestamp': {'description': \"The timestamp to look up in Wayback. If not specified, the most recent available capture is returned. The format of the timestamp is 1-14 digits (YYYYMMDDhhmmss). Defaults to '20090101'.\", 'type': 'str, optional', 'default': '20090101'}, 'callback': {'description': 'An optional callback to produce a JSONP response. Defaults to None.', 'type': 'str, optional', 'default': ''}}}"],
    ["Is 'https://www.apple.com' available in the Wayback Machine on September 9, 2015?", "{'name': 'top_grossing_mac_apps', 'description': 'Fetches a list of the top-grossing Mac apps from the App Store.', 'parameters': {'category': {'description': \"The category ID for the apps to be fetched. Defaults to '6016' (general category).\", 'type': 'str', 'default': '6016'}, 'country': {'description': \"The country code for the App Store. Defaults to 'us'.\", 'type': 'str', 'default': 'us'}, 'lang': {'description': \"The language code for the results. Defaults to 'en'.\", 'type': 'str', 'default': 'en'}, 'num': {'description': 'The number of results to return. Defaults to 100. Maximum allowed value is 200.', 'type': 'int', 'default': '100'}}}"],
    ["Is 'https://www.apple.com' available in the Wayback Machine on September 9, 2015?", "{'name': 'top_paid_mac_apps', 'description': 'Retrieves a list of the top paid Mac apps from the App Store.', 'parameters': {'category': {'description': \"Category of the apps to retrieve. Default is '6016'.\", 'type': 'str', 'default': '6016'}, 'country': {'description': \"Country code to filter the app results. Default is 'us'.\", 'type': 'str', 'default': 'us'}, 'lang': {'description': \"Language code for the results. Default is 'en'.\", 'type': 'str', 'default': 'en'}, 'num': {'description': 'Number of results to return. Default is 100. Maximum is 200.', 'type': 'int', 'default': '100'}}}",]
]

scores = model.predict(pairs)
print(scores) # [0.91427845 0.7625548  0.7656321]

---

MTEB-ToolRet

Changed ToolRet Benchmark into BEIR format to make it MTEB compatible. check make_toolret_to_beir_format.ipynb for more details.

Evaluation Code

git clone https://github.com/yjoonjang/PreRanker.git
cd PreRanker/toolret_eval
python run_mteb.py

Evaluation Results

Training Details

• preranker-v1 is a fine-tuned model based on Alibaba-NLP/gte-reranker-modernbert-base, via sentence-transformers
• Training data will soon be released.

Training Procedure

• loss: ListNetLoss
• batch size: 4
• learning rate: 2e-5
• epoch: 1

License

• apache-2.0

Citation

@misc{Pre:Ranker,
  publisher = {Youngjoon Jang, Seongtae Hong},
  year = {2025},
  url = {https://github.com/yjoonjang/preranker}
},

Sentence Transformers

@inproceedings{reimers-2019-sentence-bert,
    title = "Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks",
    author = "Reimers, Nils and Gurevych, Iryna",
    booktitle = "Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing",
    month = "11",
    year = "2019",
    publisher = "Association for Computational Linguistics",
    url = "https://arxiv.org/abs/1908.10084",
}

ListNetLoss

@inproceedings{cao2007learning,
    title={Learning to Rank: From Pairwise Approach to Listwise Approach},
    author={Cao, Zhe and Qin, Tao and Liu, Tie-Yan and Tsai, Ming-Feng and Li, Hang},
    booktitle={Proceedings of the 24th international conference on Machine learning},
    pages={129--136},
    year={2007}
}