Upload PrefixVLM checkpoint

README.md

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+---
+library_name: nanofresh
+license: mit
+pipeline_tag: image-text-to-text
+tags:
+  - vision-language
+  - multimodal
+  - prefixvlm
+  - dual-tower
+  - kv-transport
+---
+
+# PrefixVLM
+
+**PrefixVLM** is a dual-language-model vision-language architecture with one-pass K/V transport:
+- Left LM (`left_lm`) builds image-conditioned memory.
+- Right LM (`right_lm`) performs continuation.
+- Optional K/V bridge transforms left K/V before transport.
+- `transport_mode` supports `image` (visual-token transport) and `full` (full-sequence transport).
+- Optional gate (`use_gate=True`) applies feature-wise modulation: `sigmoid(Wx)` (no bias).
+
+## Load
+
+```python
+from models.prefix_vlm import PrefixVLM
+model = PrefixVLM.from_pretrained("patrickamadeus/dt-kvbridge-image-400")
+```
+
+## Build from backbone configs
+
+```python
+from models.config import VLMConfig
+from models.prefix_vlm import PrefixVLM
+
+cfg = VLMConfig()
+model = PrefixVLM(cfg=cfg, load_backbone=True, bridge_mode="linear", bridge_use_gate=True)
+```

config.json

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+{
+    "vit_hidden_dim": 768,
+    "vit_inter_dim": 3072,
+    "vit_patch_size": 16,
+    "vit_img_size": 512,
+    "vit_n_heads": 12,
+    "vit_dropout": 0.0,
+    "vit_n_blocks": 12,
+    "vit_ln_eps": 1e-06,
+    "vit_cls_flag": false,
+    "vit_model_type": "google/siglip2-base-patch16-512",
+    "lm_hidden_dim": 576,
+    "lm_inter_dim": 1536,
+    "lm_rms_eps": 1e-05,
+    "lm_re_base": 100000,
+    "lm_max_position_embeddings": 8192,
+    "lm_base_vocab_size": 49152,
+    "extra_token_amount": 66,
+    "lm_vocab_size": 49218,
+    "lm_n_heads": 9,
+    "lm_n_kv_heads": 3,
+    "lm_dropout": 0.0,
+    "lm_n_blocks": 30,
+    "lm_attn_scaling": 1.0,
+    "lm_pad_aware_rope": false,
+    "lm_max_length": 2048,
+    "lm_use_tokens": false,
+    "lm_tie_weights": true,
+    "lm_model_type": "HuggingFaceTB/SmolLM2-135M-Instruct",
+    "lm_tokenizer": "HuggingFaceTB/SmolLM2-135M-Instruct",
+    "lm_chat_template": "{% for message in messages %}{{'<|im_start|>' + message['role'] + '\n' + message['content'] + '<|im_end|>' + '\n'}}{% endfor %}{% if add_generation_prompt %}{{ '<|im_start|>assistant\n' }}{% endif %}",
+    "mp_pixel_shuffle_factor": 4,
+    "mp_image_token_length": 64,
+    "max_img_size": 2048,
+    "resize_to_max_side_len": false,
+    "vlm_extra_tokens": {
+        "image_token": "<|image|>",
+        "global_image_token": "<|global_image|>",
+        "r1c1": "<row_1_col_1>",
+        "r1c2": "<row_1_col_2>",
+        "r1c3": "<row_1_col_3>",
+        "r1c4": "<row_1_col_4>",
+        "r1c5": "<row_1_col_5>",
+        "r1c6": "<row_1_col_6>",
+        "r1c7": "<row_1_col_7>",
+        "r1c8": "<row_1_col_8>",
+        "r2c1": "<row_2_col_1>",
+        "r2c2": "<row_2_col_2>",
+        "r2c3": "<row_2_col_3>",
+        "r2c4": "<row_2_col_4>",
+        "r2c5": "<row_2_col_5>",
+        "r2c6": "<row_2_col_6>",
+        "r2c7": "<row_2_col_7>",
+        "r2c8": "<row_2_col_8>",
+        "r3c1": "<row_3_col_1>",
+        "r3c2": "<row_3_col_2>",
+        "r3c3": "<row_3_col_3>",
+        "r3c4": "<row_3_col_4>",
+        "r3c5": "<row_3_col_5>",
+        "r3c6": "<row_3_col_6>",
+        "r3c7": "<row_3_col_7>",
+        "r3c8": "<row_3_col_8>",
+        "r4c1": "<row_4_col_1>",
+        "r4c2": "<row_4_col_2>",
+        "r4c3": "<row_4_col_3>",
+        "r4c4": "<row_4_col_4>",
+        "r4c5": "<row_4_col_5>",
+        "r4c6": "<row_4_col_6>",
+        "r4c7": "<row_4_col_7>",
+        "r4c8": "<row_4_col_8>",
+        "r5c1": "<row_5_col_1>",
+        "r5c2": "<row_5_col_2>",
+        "r5c3": "<row_5_col_3>",
+        "r5c4": "<row_5_col_4>",
+        "r5c5": "<row_5_col_5>",
+        "r5c6": "<row_5_col_6>",
+        "r5c7": "<row_5_col_7>",
+        "r5c8": "<row_5_col_8>",
+        "r6c1": "<row_6_col_1>",
+        "r6c2": "<row_6_col_2>",
+        "r6c3": "<row_6_col_3>",
+        "r6c4": "<row_6_col_4>",
+        "r6c5": "<row_6_col_5>",
+        "r6c6": "<row_6_col_6>",
+        "r6c7": "<row_6_col_7>",
+        "r6c8": "<row_6_col_8>",
+        "r7c1": "<row_7_col_1>",
+        "r7c2": "<row_7_col_2>",
+        "r7c3": "<row_7_col_3>",
+        "r7c4": "<row_7_col_4>",
+        "r7c5": "<row_7_col_5>",
+        "r7c6": "<row_7_col_6>",
+        "r7c7": "<row_7_col_7>",
+        "r7c8": "<row_7_col_8>",
+        "r8c1": "<row_8_col_1>",
+        "r8c2": "<row_8_col_2>",
+        "r8c3": "<row_8_col_3>",
+        "r8c4": "<row_8_col_4>",
+        "r8c5": "<row_8_col_5>",
+        "r8c6": "<row_8_col_6>",
+        "r8c7": "<row_8_col_7>",
+        "r8c8": "<row_8_col_8>"
+    },
+    "vlm_load_backbone_weights": true,
+    "vlm_checkpoint_path": "lusxvr/nanoVLM-230M-8k",
+    "hf_repo_name": "nanoVLM",
+    "left_mask_scope": "full",
+    "right_prefill_mode": "full",
+    "use_right_kv_cache_gates": false,
+    "right_kv_gate_normalize": false,
+    "right_kv_gate_init_offdiag": 0.001,
+    "use_kv_bridge": true,
+    "kv_bridge_type": "mlp",
+    "kv_bridge_mlp_ratio": 4.0,
+    "kv_bridge_use_rmsnorm": true,
+    "kv_bridge_residual": true,
+    "kv_bridge_init_mode": "default",
+    "kv_bridge_linear_depth": 1,
+    "kv_bridge_adapter_depth": 2,
+    "kv_bridge_adapter_expansion": 1.0
+}

model.safetensors

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+version https://git-lfs.github.com/spec/v1
+oid sha256:bc32ed87e0e2bb78b869eeca63209bad57ba1b76caea51b83d2a6dee93853156
+size 1450677688