shaswatamitra/falcon-yara-bi-e5-base-v2

FALCON bi-encoder — YARA / e5-base-v2

Contrastive encoder fine-tuned to map CTI text and YARA rules into a shared embedding space. Backbone: intfloat/e5-base-v2.

Test-set metrics

Training

Symmetric InfoNCE / NT-Xent over in-batch negatives. Best checkpoint selected by validation loss.

• —Run 0 — batch=16, epochs=5, lr=2e-05, schedule=constant, T=0.05
• —Run 1 — batch=50, epochs=10, lr=2e-05, schedule=constant, T=0.05
• —Run 2 — batch=70, epochs=30, lr=2e-05, schedule=constant, T=0.05
• —Run 3 — batch=128, epochs=30, lr=5e-05, schedule=warmup_cosine, T=0.05
• —Run 4 — batch=70, epochs=50, lr=2e-05, schedule=constant, T=0.07

Loading

from transformers import AutoModel, AutoTokenizer
tok   = AutoTokenizer.from_pretrained("shaswatamitra/falcon-yara-bi-e5-base-v2")
model = AutoModel.from_pretrained("shaswatamitra/falcon-yara-bi-e5-base-v2")

Citation

@article{mitra2025falcon,
  title={FALCON: Autonomous Cyber Threat Intelligence Mining with LLMs for IDS Rule Generation},
  author={Mitra, Shaswata and Bazarov, Azim and Duclos, Martin and Mittal, Sudip and Piplai, Aritran and Rahman, Md Rayhanur and Zieglar, Edward and Rahimi, Shahram},
  journal={arXiv preprint arXiv:2508.18684},
  year={2025}
}