LDARNet-2M

Pretrained LDARNet (~2M params) with learnable DNA tokenization (dynamic chunking + BiMamba-2).

• Paper: arXiv:2606.04552
• Code: ICML-LDARNet

Files

• model_ckpt_2m.pt — MLM checkpoint with embedded LDarConfig

Download

Clone the code repo and install dependencies, then download the weights:

huggingface-cli download darlednik/LDARNet-2M model_ckpt_2m.pt --local-dir models_ckpts

Load

import torch
from ldar.utils.ckpt import load_ldar_from_ckpt

model, cfg = load_ldar_from_ckpt(
    "models_ckpts/model_ckpt_2m.pt",
    device="cuda",
    dtype=torch.bfloat16,
)

Architecture

Component	Layout	d_model
Encoder	m3t1 — 3× BiMamba-2 + 1 local-attention layer	64
Backbone	M6 — 6× BiMamba-2 (+ SwiGLU)	128
Decoder	m3 — 3× BiMamba-2	64

• Compression ratio N = 4
• Byte vocabulary: {A, C, G, T, N, [MASK], <pad>}

Citation

@misc{ledneva2026ldarnetdnaadaptiverepresentation,
      title={LDARNet: DNA Adaptive Representation Network with Learnable Tokenization for Genomic Modeling},
      author={Daria Ledneva and Denis Kuznetsov},
      year={2026},
      eprint={2606.04552},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2606.04552},
}