update usage
Browse files- README.md +9 -7
- __init__.py +10 -0
- config.json +9 -2
- configuration_ops_colqwen3.py +18 -0
- modeling_ops_colqwen3.py +103 -0
- preprocessor_config.json +3 -0
- processing_ops_colqwen3.py +139 -0
- scripts/ops_colqwen3_embedder.py +90 -261
README.md
CHANGED
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@@ -32,33 +32,35 @@ The model is trained using a multi-stage strategy that combines large-scale text
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**Requirements**
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```
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transformers>=4.57.0
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qwen-vl-utils>=0.0.14
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torch==2.8.0
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-
colpali_engine==0.3.12
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```
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**Basic Usage**
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```python
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from PIL import Image
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from scripts.ops_colqwen3_embedder import OpsColQwen3Embedder
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images = [Image.new("RGB", (32, 32), color="white"), Image.new("RGB", (16, 16), color="black")]
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-
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queries = ["Is attention really all you need?", "What is the amount of bananas farmed in Salvador?"]
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-
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model_name="OpenSearch-AI/Ops-Colqwen3-4B",
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dims=
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dtype=torch.float16,
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attn_implementation="flash_attention_2",
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)
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query_embeddings =
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image_embeddings =
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scores = encoder.compute_scores(query_embeddings, image_embeddings)
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print(f"Scores:\n{scores}")
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```
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**Requirements**
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```
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+
pillow
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transformers>=4.57.0
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qwen-vl-utils>=0.0.14
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torch==2.8.0
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```
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**Basic Usage**
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```python
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import torch
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from PIL import Image
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from scripts.ops_colqwen3_embedder import OpsColQwen3Embedder
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images = [Image.new("RGB", (32, 32), color="white"), Image.new("RGB", (16, 16), color="black")]
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queries = ["Is attention really all you need?", "What is the amount of bananas farmed in Salvador?"]
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embedder = OpsColQwen3Embedder(
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model_name="OpenSearch-AI/Ops-Colqwen3-4B",
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dims=2560,
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dtype=torch.float16,
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attn_implementation="flash_attention_2",
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)
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query_embeddings = embedder.encode_queries(queries)
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image_embeddings = embedder.encode_images(images)
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print(query_embeddings[0].shape, image_embeddings[0].shape) # (23, 2560) (18, 2560)
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scores = embedder.compute_scores(query_embeddings, image_embeddings)
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print(f"Scores:\n{scores}")
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```
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__init__.py
ADDED
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@@ -0,0 +1,10 @@
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from .configuration_ops_colqwen3 import OpsColQwen3Config
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from .modeling_ops_colqwen3 import OpsColQwen3Model, OpsColQwen3PreTrainedModel
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from .processing_ops_colqwen3 import OpsColQwen3Processor
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__all__ = [
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"OpsColQwen3Config",
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"OpsColQwen3Model",
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"OpsColQwen3PreTrainedModel",
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"OpsColQwen3Processor",
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]
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config.json
CHANGED
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{
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"architectures": [
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-
"
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],
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"dtype": "float32",
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"image_token_id": 151655,
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-
"model_type": "
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"text_config": {
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"attention_bias": false,
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"attention_dropout": 0.0,
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{
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"architectures": [
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"OpsColQwen3Model"
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],
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"auto_map": {
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"AutoConfig": "configuration_ops_colqwen3.OpsColQwen3Config",
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"AutoModel": "modeling_ops_colqwen3.OpsColQwen3Model",
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"AutoModelForVision2Seq": "modeling_ops_colqwen3.OpsColQwen3Model",
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"AutoProcessor": "processing_ops_colqwen3.OpsColQwen3Processor"
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},
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"dims": 2560,
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"dtype": "float32",
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"image_token_id": 151655,
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"model_type": "ops_colqwen3",
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"text_config": {
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"attention_bias": false,
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"attention_dropout": 0.0,
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configuration_ops_colqwen3.py
ADDED
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from transformers import Qwen3VLConfig
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class OpsColQwen3Config(Qwen3VLConfig):
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"""
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Configuration class for OpsColQwen3 model.
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"""
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model_type = "ops_colqwen3"
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def __init__(
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self,
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dims: int = 2560,
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mask_non_image_embeddings: bool = False,
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**kwargs
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):
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super().__init__(**kwargs)
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self.dims = dims
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self.mask_non_image_embeddings = mask_non_image_embeddings
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modeling_ops_colqwen3.py
ADDED
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from typing import Optional
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import torch
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from torch import nn
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from transformers import PreTrainedModel
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from transformers.models.qwen3_vl import Qwen3VLModel
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from transformers.utils import logging
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from .configuration_ops_colqwen3 import OpsColQwen3Config
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logger = logging.get_logger(__name__)
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class OpsColQwen3PreTrainedModel(PreTrainedModel):
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config_class = OpsColQwen3Config
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base_model_prefix = "ops_colqwen3"
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supports_gradient_checkpointing = True
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_no_split_modules = ["Qwen3VLVisionBlock", "Qwen3DecoderLayer"]
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_skip_keys_device_placement = "past_key_values"
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_supports_flash_attn_2 = True
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_supports_sdpa = True
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_supports_cache_class = True
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class OpsColQwen3Model(OpsColQwen3PreTrainedModel):
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_checkpoint_conversion_mapping = {
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r"^language_model": r"qwen3vl.language_model",
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r"^visual": "qwen3vl.visual",
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}
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def __init__(self, config: OpsColQwen3Config):
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super().__init__(config)
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self.config = config
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self.qwen3vl = Qwen3VLModel(config)
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self.dims = config.text_config.hidden_size
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self.custom_text_proj = nn.Linear(config.text_config.hidden_size, self.dims)
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self.mask_non_image_embeddings = config.mask_non_image_embeddings
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self.post_init()
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@classmethod
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def from_pretrained(cls, *args, config: Optional[OpsColQwen3Config] = None, **kwargs):
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key_mapping = kwargs.pop("key_mapping", None)
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if key_mapping is None:
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key_mapping = getattr(cls, "_checkpoint_conversion_mapping", None)
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dims = None
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if 'dims' in kwargs:
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dims = kwargs.pop('dims')
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elif config is not None:
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dims = config.dims
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model = super().from_pretrained(*args, config=config, **kwargs, key_mapping=key_mapping)
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if dims is not None:
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model.dims = dims
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return model
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def forward(self, input_ids: Optional[torch.LongTensor] = None, attention_mask: Optional[torch.Tensor] = None, pixel_values: Optional[torch.Tensor] = None, image_grid_thw: Optional[torch.Tensor] = None, **kwargs) -> torch.Tensor:
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has_pixel_values = pixel_values is not None
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if has_pixel_values:
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if image_grid_thw is None:
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raise ValueError("`image_grid_thw` must be provided when `pixel_values` is passed.")
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if not torch.is_tensor(image_grid_thw):
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image_grid_thw = torch.as_tensor(image_grid_thw, device=pixel_values.device)
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offsets = image_grid_thw.prod(dim=1)
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unpadded = [pixel_sequence[: int(offset.item())] for pixel_sequence, offset in zip(pixel_values, offsets)]
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pixel_values = torch.cat(unpadded, dim=0) if unpadded else None
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outputs = self.qwen3vl(
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input_ids=input_ids,
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attention_mask=attention_mask,
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pixel_values=pixel_values,
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image_grid_thw=image_grid_thw,
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use_cache=False,
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output_hidden_states=True,
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return_dict=True,
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)
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last_hidden_states = outputs.last_hidden_state
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proj = self.custom_text_proj(last_hidden_states)
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if self.dims < self.config.text_config.hidden_size:
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proj = proj[..., : self.dims]
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proj = proj / proj.norm(dim=-1, keepdim=True)
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if attention_mask is not None:
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proj = proj * attention_mask.unsqueeze(-1)
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if has_pixel_values and self.mask_non_image_embeddings and input_ids is not None:
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image_mask = (input_ids == self.config.image_token_id).unsqueeze(-1)
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proj = proj * image_mask
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return proj
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@property
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def patch_size(self) -> int:
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return self.qwen3vl.visual.config.patch_size
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@property
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def spatial_merge_size(self) -> int:
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return self.qwen3vl.visual.config.spatial_merge_size
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preprocessor_config.json
CHANGED
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{
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"crop_size": null,
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"data_format": "channels_first",
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"default_to_square": true,
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{
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"auto_map": {
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"AutoProcessor": "processing_ops_colqwen3.OpsColQwen3Processor"
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},
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"crop_size": null,
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"data_format": "channels_first",
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"default_to_square": true,
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processing_ops_colqwen3.py
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| 1 |
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import logging
|
| 2 |
+
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| 3 |
+
from typing import List, Optional, Union
|
| 4 |
+
|
| 5 |
+
import torch
|
| 6 |
+
from PIL import Image
|
| 7 |
+
from transformers import BatchEncoding, BatchFeature
|
| 8 |
+
from transformers.models.qwen3_vl import Qwen3VLProcessor
|
| 9 |
+
|
| 10 |
+
logger = logging.getLogger(__name__)
|
| 11 |
+
|
| 12 |
+
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| 13 |
+
def get_torch_device(device: str = "auto") -> str:
|
| 14 |
+
"""
|
| 15 |
+
Returns the device (string) to be used by PyTorch.
|
| 16 |
+
|
| 17 |
+
`device` arg defaults to "auto" which will use:
|
| 18 |
+
- "cuda:0" if available
|
| 19 |
+
- else "mps" if available
|
| 20 |
+
- else "cpu".
|
| 21 |
+
"""
|
| 22 |
+
|
| 23 |
+
if device == "auto":
|
| 24 |
+
if torch.cuda.is_available():
|
| 25 |
+
device = "cuda:0"
|
| 26 |
+
elif torch.backends.mps.is_available(): # for Apple Silicon
|
| 27 |
+
device = "mps"
|
| 28 |
+
else:
|
| 29 |
+
device = "cpu"
|
| 30 |
+
logger.info(f"Using device: {device}")
|
| 31 |
+
|
| 32 |
+
return device
|
| 33 |
+
|
| 34 |
+
|
| 35 |
+
class OpsColQwen3Processor(Qwen3VLProcessor):
|
| 36 |
+
"""
|
| 37 |
+
Processor for OpsColQwen3 model.
|
| 38 |
+
"""
|
| 39 |
+
|
| 40 |
+
attributes = ["image_processor", "tokenizer"]
|
| 41 |
+
image_processor_class = "AutoImageProcessor"
|
| 42 |
+
tokenizer_class = "AutoTokenizer"
|
| 43 |
+
|
| 44 |
+
query_prefix: str = "Query: "
|
| 45 |
+
visual_prompt_prefix: str = "<|im_start|>user\n<|vision_start|><|image_pad|><|vision_end|>Describe the image.<|im_end|><|im_start|>assistant\n<|endoftext|>"
|
| 46 |
+
query_augmentation_token: str = "<|endoftext|>"
|
| 47 |
+
image_token: str = "<|image_pad|>"
|
| 48 |
+
|
| 49 |
+
def __init__(self, image_processor=None, tokenizer=None, chat_template=None, **kwargs):
|
| 50 |
+
"""
|
| 51 |
+
Initialize the processor.
|
| 52 |
+
|
| 53 |
+
Args:
|
| 54 |
+
image_processor: Image processor instance
|
| 55 |
+
tokenizer: Tokenizer instance
|
| 56 |
+
chat_template: Optional chat template
|
| 57 |
+
**kwargs: Additional arguments
|
| 58 |
+
"""
|
| 59 |
+
super().__init__(image_processor=image_processor, tokenizer=tokenizer, chat_template=chat_template, **kwargs)
|
| 60 |
+
|
| 61 |
+
if self.tokenizer is not None:
|
| 62 |
+
self.tokenizer.padding_side = "left"
|
| 63 |
+
|
| 64 |
+
def process_images(self, images: List[Image.Image], return_tensors: str = "pt", **kwargs) -> Union[BatchFeature, BatchEncoding]:
|
| 65 |
+
"""
|
| 66 |
+
Process a batch of PIL images for the model.
|
| 67 |
+
"""
|
| 68 |
+
images = [image.convert("RGB") for image in images]
|
| 69 |
+
|
| 70 |
+
batch_doc = self(text=[self.visual_prompt_prefix] * len(images), images=images, padding="longest", return_tensors=return_tensors, **kwargs)
|
| 71 |
+
|
| 72 |
+
if batch_doc["pixel_values"].numel() == 0:
|
| 73 |
+
return batch_doc
|
| 74 |
+
|
| 75 |
+
offsets = batch_doc["image_grid_thw"].prod(dim=1)
|
| 76 |
+
pixel_values = list(torch.split(batch_doc["pixel_values"], offsets.tolist()))
|
| 77 |
+
batch_doc["pixel_values"] = torch.nn.utils.rnn.pad_sequence(pixel_values, batch_first=True)
|
| 78 |
+
|
| 79 |
+
return batch_doc
|
| 80 |
+
|
| 81 |
+
def process_queries(self, queries: List[str], return_tensors: str = "pt", **kwargs) -> Union[BatchFeature, BatchEncoding]:
|
| 82 |
+
"""
|
| 83 |
+
Process a list of text queries.
|
| 84 |
+
"""
|
| 85 |
+
processed_queries = [self.query_prefix + q + self.query_augmentation_token * 10 for q in queries]
|
| 86 |
+
return self(text=processed_queries, return_tensors=return_tensors, padding="longest", **kwargs)
|
| 87 |
+
|
| 88 |
+
@staticmethod
|
| 89 |
+
def score_multi_vector(
|
| 90 |
+
qs: Union[torch.Tensor, List[torch.Tensor]],
|
| 91 |
+
ps: Union[torch.Tensor, List[torch.Tensor]],
|
| 92 |
+
batch_size: int = 128,
|
| 93 |
+
device: Optional[Union[str, torch.device]] = None,
|
| 94 |
+
) -> torch.Tensor:
|
| 95 |
+
"""
|
| 96 |
+
Compute the late-interaction/MaxSim score (ColBERT-like) for the given multi-vector
|
| 97 |
+
query embeddings (`qs`) and passage embeddings (`ps`). For ColPali, a passage is the
|
| 98 |
+
image of a document page.
|
| 99 |
+
|
| 100 |
+
Because the embedding tensors are multi-vector and can thus have different shapes, they
|
| 101 |
+
should be fed as:
|
| 102 |
+
(1) a list of tensors, where the i-th tensor is of shape (sequence_length_i, embedding_dim)
|
| 103 |
+
(2) a single tensor of shape (n_passages, max_sequence_length, embedding_dim) -> usually
|
| 104 |
+
obtained by padding the list of tensors.
|
| 105 |
+
|
| 106 |
+
Args:
|
| 107 |
+
qs (`Union[torch.Tensor, List[torch.Tensor]`): Query embeddings.
|
| 108 |
+
ps (`Union[torch.Tensor, List[torch.Tensor]`): Passage embeddings.
|
| 109 |
+
batch_size (`int`, *optional*, defaults to 128): Batch size for computing scores.
|
| 110 |
+
device (`Union[str, torch.device]`, *optional*): Device to use for computation. If not
|
| 111 |
+
provided, uses `get_torch_device("auto")`.
|
| 112 |
+
|
| 113 |
+
Returns:
|
| 114 |
+
`torch.Tensor`: A tensor of shape `(n_queries, n_passages)` containing the scores. The score
|
| 115 |
+
tensor is saved on the "cpu" device.
|
| 116 |
+
"""
|
| 117 |
+
device = device or get_torch_device("auto")
|
| 118 |
+
|
| 119 |
+
if len(qs) == 0:
|
| 120 |
+
raise ValueError("No queries provided")
|
| 121 |
+
if len(ps) == 0:
|
| 122 |
+
raise ValueError("No passages provided")
|
| 123 |
+
|
| 124 |
+
scores_list: List[torch.Tensor] = []
|
| 125 |
+
|
| 126 |
+
for i in range(0, len(qs), batch_size):
|
| 127 |
+
scores_batch = []
|
| 128 |
+
qs_batch = torch.nn.utils.rnn.pad_sequence(qs[i : i + batch_size], batch_first=True, padding_value=0).to(device)
|
| 129 |
+
for j in range(0, len(ps), batch_size):
|
| 130 |
+
ps_batch = torch.nn.utils.rnn.pad_sequence(ps[j : j + batch_size], batch_first=True, padding_value=0).to(device)
|
| 131 |
+
scores_batch.append(torch.einsum("bnd,csd->bcns", qs_batch, ps_batch).max(dim=3)[0].sum(dim=2))
|
| 132 |
+
scores_batch = torch.cat(scores_batch, dim=1).cpu()
|
| 133 |
+
scores_list.append(scores_batch)
|
| 134 |
+
|
| 135 |
+
scores = torch.cat(scores_list, dim=0)
|
| 136 |
+
assert scores.shape[0] == len(qs), f"Expected {len(qs)} scores, got {scores.shape[0]}"
|
| 137 |
+
|
| 138 |
+
scores = scores.to(torch.float32)
|
| 139 |
+
return scores
|
scripts/ops_colqwen3_embedder.py
CHANGED
|
@@ -1,338 +1,167 @@
|
|
| 1 |
-
from typing import List, Union, Optional, Tuple
|
| 2 |
import torch
|
| 3 |
-
from torch import nn
|
| 4 |
from PIL import Image
|
| 5 |
-
from
|
| 6 |
-
from
|
| 7 |
-
from colpali_engine.utils.processing_utils import BaseVisualRetrieverProcessor
|
| 8 |
-
from transformers import BatchEncoding, BatchFeature
|
| 9 |
-
from transformers.models.qwen2_vl.image_processing_qwen2_vl import smart_resize
|
| 10 |
-
|
| 11 |
-
|
| 12 |
-
class OpsColQwen3(Qwen3VLModel):
|
| 13 |
-
"""
|
| 14 |
-
OpsColQwen3 model implementation for multi-vector document retrieval.
|
| 15 |
-
"""
|
| 16 |
-
|
| 17 |
-
def __init__(self, config: Qwen3VLConfig, dims: int = 320, mask_non_image_embeddings: bool = False):
|
| 18 |
-
super().__init__(config=config)
|
| 19 |
-
self.custom_text_proj = nn.Linear(self.config.text_config.hidden_size, self.config.text_config.hidden_size)
|
| 20 |
-
self.dims = dims
|
| 21 |
-
self.padding_side = "left"
|
| 22 |
-
self.mask_non_image_embeddings = mask_non_image_embeddings
|
| 23 |
-
self.post_init()
|
| 24 |
-
|
| 25 |
-
@classmethod
|
| 26 |
-
def from_pretrained(cls, *args, **kwargs):
|
| 27 |
-
key_mapping = kwargs.pop("key_mapping", None)
|
| 28 |
-
if key_mapping is None:
|
| 29 |
-
key_mapping = {
|
| 30 |
-
r"^base_model\.model\.(.*)": r"\1",
|
| 31 |
-
r"^model\.(.*)": r"\1",
|
| 32 |
-
}
|
| 33 |
-
|
| 34 |
-
return super().from_pretrained(*args, **kwargs, key_mapping=key_mapping)
|
| 35 |
-
|
| 36 |
-
def forward(self, *args, **kwargs) -> torch.Tensor:
|
| 37 |
-
attention_mask = kwargs.get("attention_mask")
|
| 38 |
-
has_pixel_values = "pixel_values" in kwargs and kwargs["pixel_values"] is not None
|
| 39 |
-
|
| 40 |
-
if has_pixel_values:
|
| 41 |
-
image_grid_thw = kwargs.get("image_grid_thw")
|
| 42 |
-
if image_grid_thw is None:
|
| 43 |
-
raise ValueError("`image_grid_thw` must be provided when `pixel_values` is passed.")
|
| 44 |
-
|
| 45 |
-
if not torch.is_tensor(image_grid_thw):
|
| 46 |
-
image_grid_thw = torch.as_tensor(image_grid_thw, device=kwargs["pixel_values"].device)
|
| 47 |
-
|
| 48 |
-
offsets = image_grid_thw.prod(dim=1)
|
| 49 |
-
unpadded = [pixel_sequence[: int(offset.item())] for pixel_sequence, offset in zip(kwargs["pixel_values"], offsets)]
|
| 50 |
-
|
| 51 |
-
if unpadded:
|
| 52 |
-
kwargs["pixel_values"] = torch.cat(unpadded, dim=0)
|
| 53 |
-
else:
|
| 54 |
-
kwargs["pixel_values"] = None
|
| 55 |
-
|
| 56 |
-
kwargs.pop("return_dict", True)
|
| 57 |
-
kwargs.pop("output_hidden_states", None)
|
| 58 |
-
kwargs.pop("use_cache", None)
|
| 59 |
-
|
| 60 |
-
last_hidden_states = super().forward(*args, **kwargs, use_cache=False, output_hidden_states=True, return_dict=True).last_hidden_state
|
| 61 |
-
|
| 62 |
-
proj = self.custom_text_proj(last_hidden_states)
|
| 63 |
-
if self.dims < self.config.text_config.hidden_size:
|
| 64 |
-
proj = proj[..., : self.dims]
|
| 65 |
-
proj = proj / proj.norm(dim=-1, keepdim=True)
|
| 66 |
-
|
| 67 |
-
if attention_mask is not None:
|
| 68 |
-
proj = proj * attention_mask.unsqueeze(-1)
|
| 69 |
-
|
| 70 |
-
if has_pixel_values and self.mask_non_image_embeddings and kwargs.get("input_ids") is not None:
|
| 71 |
-
image_mask = (kwargs["input_ids"] == self.config.image_token_id).unsqueeze(-1)
|
| 72 |
-
proj = proj * image_mask
|
| 73 |
-
|
| 74 |
-
return proj
|
| 75 |
-
|
| 76 |
-
@property
|
| 77 |
-
def patch_size(self) -> int:
|
| 78 |
-
return self.visual.config.patch_size
|
| 79 |
-
|
| 80 |
-
@property
|
| 81 |
-
def spatial_merge_size(self) -> int:
|
| 82 |
-
return self.visual.config.spatial_merge_size
|
| 83 |
-
|
| 84 |
-
@property
|
| 85 |
-
def temporal_patch_size(self) -> int:
|
| 86 |
-
return getattr(self.visual.config, "temporal_patch_size", 1)
|
| 87 |
-
|
| 88 |
-
|
| 89 |
-
class OpsColQwen3Processor(BaseVisualRetrieverProcessor, Qwen3VLProcessor):
|
| 90 |
-
"""
|
| 91 |
-
Processor for OpsColQwen3.
|
| 92 |
-
"""
|
| 93 |
-
|
| 94 |
-
query_prefix: str = "Query: "
|
| 95 |
-
visual_prompt_prefix: str = "<|im_start|>user\n<|vision_start|><|image_pad|><|vision_end|>Describe the image.<|im_end|><|im_start|>assistant\n<|endoftext|>"
|
| 96 |
-
query_augmentation_token: str = "<|endoftext|>"
|
| 97 |
-
image_token: str = "<|image_pad|>"
|
| 98 |
-
|
| 99 |
-
def __init__(self, *args, **kwargs) -> None:
|
| 100 |
-
super().__init__(*args, **kwargs)
|
| 101 |
-
self.tokenizer.padding_side = "left"
|
| 102 |
-
|
| 103 |
-
@classmethod
|
| 104 |
-
def from_pretrained(cls, *args, device_map: Optional[str] = None, **kwargs):
|
| 105 |
-
instance = super().from_pretrained(*args, device_map=device_map, **kwargs)
|
| 106 |
-
|
| 107 |
-
if "max_num_visual_tokens" in kwargs:
|
| 108 |
-
instance.image_processor.max_pixels = kwargs["max_num_visual_tokens"] * 32 * 32
|
| 109 |
-
instance.image_processor.size["longest_edge"] = instance.image_processor.max_pixels
|
| 110 |
-
|
| 111 |
-
return instance
|
| 112 |
-
|
| 113 |
-
def process_images(self, images: List[Image.Image]) -> Union[BatchFeature, BatchEncoding]:
|
| 114 |
-
"""Process a batch of PIL images."""
|
| 115 |
-
images = [image.convert("RGB") for image in images]
|
| 116 |
-
|
| 117 |
-
batch_doc = self.__call__(
|
| 118 |
-
text=[self.visual_prompt_prefix] * len(images),
|
| 119 |
-
images=images,
|
| 120 |
-
padding="longest",
|
| 121 |
-
return_tensors="pt",
|
| 122 |
-
)
|
| 123 |
-
|
| 124 |
-
if batch_doc["pixel_values"].numel() == 0:
|
| 125 |
-
return batch_doc
|
| 126 |
-
|
| 127 |
-
offsets = batch_doc["image_grid_thw"].prod(dim=1)
|
| 128 |
-
pixel_values = list(torch.split(batch_doc["pixel_values"], offsets.tolist()))
|
| 129 |
-
batch_doc["pixel_values"] = torch.nn.utils.rnn.pad_sequence(pixel_values, batch_first=True)
|
| 130 |
-
|
| 131 |
-
return batch_doc
|
| 132 |
-
|
| 133 |
-
def process_texts(self, texts: List[str]) -> Union[BatchFeature, BatchEncoding]:
|
| 134 |
-
"""Process a list of texts."""
|
| 135 |
-
return self(text=texts, return_tensors="pt", padding="longest")
|
| 136 |
-
|
| 137 |
-
def score(
|
| 138 |
-
self,
|
| 139 |
-
qs: Union[torch.Tensor, List[torch.Tensor]],
|
| 140 |
-
ps: Union[torch.Tensor, List[torch.Tensor]],
|
| 141 |
-
device: Optional[Union[str, torch.device]] = None,
|
| 142 |
-
**kwargs,
|
| 143 |
-
) -> torch.Tensor:
|
| 144 |
-
"""Compute the MaxSim score (ColBERT-like) for query and passage embeddings."""
|
| 145 |
-
return self.score_multi_vector(qs, ps, device=device, **kwargs)
|
| 146 |
-
|
| 147 |
-
def get_n_patches(
|
| 148 |
-
self,
|
| 149 |
-
image_size: Tuple[int, int],
|
| 150 |
-
spatial_merge_size: int,
|
| 151 |
-
) -> Tuple[int, int]:
|
| 152 |
-
"""
|
| 153 |
-
Compute the number of patches (n_patches_x, n_patches_y) for an image.
|
| 154 |
-
"""
|
| 155 |
-
patch_size = self.image_processor.patch_size
|
| 156 |
-
merge_size = getattr(self.image_processor, "merge_size", 1)
|
| 157 |
-
|
| 158 |
-
height_new, width_new = smart_resize(
|
| 159 |
-
width=image_size[0],
|
| 160 |
-
height=image_size[1],
|
| 161 |
-
factor=patch_size * merge_size,
|
| 162 |
-
min_pixels=self.image_processor.size["shortest_edge"],
|
| 163 |
-
max_pixels=self.image_processor.size["longest_edge"],
|
| 164 |
-
)
|
| 165 |
-
|
| 166 |
-
n_patches_x = width_new // patch_size // spatial_merge_size
|
| 167 |
-
n_patches_y = height_new // patch_size // spatial_merge_size
|
| 168 |
-
|
| 169 |
-
return n_patches_x, n_patches_y
|
| 170 |
-
|
| 171 |
-
def get_image_mask(self, batch_images: BatchFeature) -> torch.Tensor:
|
| 172 |
-
"""Return a boolean tensor identifying image tokens."""
|
| 173 |
-
return batch_images.input_ids == self.image_token_id
|
| 174 |
|
| 175 |
|
| 176 |
class OpsColQwen3Embedder:
|
| 177 |
"""
|
| 178 |
-
|
| 179 |
-
|
| 180 |
-
Args:
|
| 181 |
-
model_name: HuggingFace model name or local path
|
| 182 |
-
dims: Embedding dimension after projection
|
| 183 |
-
device: Device to run the model on
|
| 184 |
-
attn_implementation: Attention implementation
|
| 185 |
"""
|
| 186 |
|
| 187 |
def __init__(
|
| 188 |
self,
|
| 189 |
-
model_name: str = "OpenSearch-AI/Ops-
|
| 190 |
dims: int = 2560,
|
| 191 |
device: Optional[str] = None,
|
| 192 |
-
|
| 193 |
-
**kwargs,
|
| 194 |
):
|
| 195 |
-
|
| 196 |
-
|
| 197 |
|
| 198 |
-
|
| 199 |
-
|
| 200 |
-
|
|
|
|
|
|
|
|
|
|
| 201 |
|
| 202 |
-
|
| 203 |
-
|
| 204 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 205 |
|
| 206 |
-
|
| 207 |
-
if attn_implementation:
|
| 208 |
-
load_kwargs["attn_implementation"] = attn_implementation
|
| 209 |
|
| 210 |
-
self.model =
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 211 |
self.model.eval()
|
| 212 |
|
| 213 |
-
self.processor =
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 214 |
|
| 215 |
-
def
|
| 216 |
self,
|
| 217 |
-
|
| 218 |
-
batch_size: int = 32,
|
| 219 |
-
show_progress: bool = False,
|
| 220 |
) -> List[torch.Tensor]:
|
| 221 |
"""
|
| 222 |
Encode a list of text queries.
|
| 223 |
|
| 224 |
Args:
|
| 225 |
-
|
| 226 |
-
batch_size: Batch size for processing
|
| 227 |
-
show_progress: Whether to show progress bar
|
| 228 |
|
| 229 |
Returns:
|
| 230 |
-
List of
|
| 231 |
"""
|
| 232 |
-
|
| 233 |
-
|
| 234 |
-
iterator = range(0, len(texts), batch_size)
|
| 235 |
-
if show_progress:
|
| 236 |
-
iterator = tqdm(iterator, desc="Encoding texts")
|
| 237 |
|
| 238 |
with torch.no_grad():
|
| 239 |
-
|
| 240 |
-
batch_texts = texts[i : i + batch_size]
|
| 241 |
|
| 242 |
-
|
| 243 |
-
|
| 244 |
-
inputs = self.processor.process_texts(batch_texts)
|
| 245 |
-
inputs = {k: v.to(self.device) for k, v in inputs.items()}
|
| 246 |
-
|
| 247 |
-
embeddings = self.model(**inputs)
|
| 248 |
-
all_embeddings.extend(embeddings.cpu().to(torch.float32))
|
| 249 |
-
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return all_embeddings
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def encode_images(
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self,
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| 254 |
-
images: List[Union[str, Image.Image]]
|
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-
batch_size: int = 32,
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-
show_progress: bool = False,
|
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) -> List[torch.Tensor]:
|
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"""
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| 259 |
Encode a list of images.
|
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Args:
|
| 262 |
images: List of image paths or PIL Images
|
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-
batch_size: Batch size for processing
|
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-
show_progress: Whether to show progress bar
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Returns:
|
| 267 |
-
List of
|
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"""
|
| 269 |
-
|
| 270 |
for img in images:
|
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if isinstance(img, str):
|
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-
|
| 273 |
elif isinstance(img, Image.Image):
|
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-
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else:
|
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raise ValueError(f"Unsupported image type: {type(img)}")
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-
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| 279 |
-
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| 280 |
-
iterator = range(0, len(image_list), batch_size)
|
| 281 |
-
if show_progress:
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-
iterator = tqdm(iterator, desc="Encoding images")
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| 284 |
with torch.no_grad():
|
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-
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-
batch_images = image_list[i : i + batch_size]
|
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-
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-
inputs = self.processor.process_images(batch_images)
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-
inputs = {k: v.to(self.device) for k, v in inputs.items()}
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| 291 |
-
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-
all_embeddings.extend(embeddings.cpu().to(torch.float32))
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-
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-
return all_embeddings
|
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| 296 |
def compute_scores(
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| 297 |
self,
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| 298 |
query_embeddings: List[torch.Tensor],
|
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-
image_embeddings: List[torch.Tensor]
|
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-
batch_size: int = 128,
|
| 301 |
) -> torch.Tensor:
|
| 302 |
"""
|
| 303 |
-
Compute
|
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|
| 305 |
Args:
|
| 306 |
-
query_embeddings: List of query
|
| 307 |
-
image_embeddings: List of image
|
| 308 |
-
batch_size: Batch size for score computation
|
| 309 |
|
| 310 |
Returns:
|
| 311 |
-
|
| 312 |
"""
|
| 313 |
-
return self.processor.score_multi_vector(
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-
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-
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-
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-
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-
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| 319 |
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| 321 |
# Example usage
|
| 322 |
if __name__ == "__main__":
|
| 323 |
images = [Image.new("RGB", (32, 32), color="white"), Image.new("RGB", (16, 16), color="black")]
|
| 324 |
-
|
| 325 |
queries = ["Is attention really all you need?", "What is the amount of bananas farmed in Salvador?"]
|
| 326 |
|
| 327 |
-
|
| 328 |
model_name="OpenSearch-AI/Ops-Colqwen3-4B",
|
| 329 |
-
dims=
|
| 330 |
dtype=torch.float16,
|
| 331 |
attn_implementation="flash_attention_2",
|
| 332 |
)
|
| 333 |
|
| 334 |
-
query_embeddings =
|
| 335 |
-
image_embeddings =
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|
| 336 |
|
| 337 |
-
scores
|
| 338 |
-
print(f"Scores:\n{scores}")
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|
| 1 |
import torch
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|
| 2 |
from PIL import Image
|
| 3 |
+
from transformers import AutoModel, AutoProcessor
|
| 4 |
+
from typing import List, Union, Optional
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|
| 5 |
|
| 6 |
|
| 7 |
class OpsColQwen3Embedder:
|
| 8 |
"""
|
| 9 |
+
Embedder for OpsColQwen3-4B model.
|
|
|
|
|
|
|
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|
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|
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|
| 10 |
"""
|
| 11 |
|
| 12 |
def __init__(
|
| 13 |
self,
|
| 14 |
+
model_name: str = "OpenSearch-AI/Ops-Colqwen3-4B",
|
| 15 |
dims: int = 2560,
|
| 16 |
device: Optional[str] = None,
|
| 17 |
+
**kwargs
|
|
|
|
| 18 |
):
|
| 19 |
+
"""
|
| 20 |
+
Initialize the embedder.
|
| 21 |
|
| 22 |
+
Args:
|
| 23 |
+
model_name: Model path or hub name
|
| 24 |
+
dims: Embedding dimensions
|
| 25 |
+
device: Device to use for inference ('mps', 'cuda', or 'cpu')
|
| 26 |
+
**kwargs: Additional arguments passed to from_pretrained
|
| 27 |
+
"""
|
| 28 |
|
| 29 |
+
device_map = kwargs.pop('device_map', None)
|
| 30 |
+
if not device_map:
|
| 31 |
+
if device:
|
| 32 |
+
device_map = device
|
| 33 |
+
elif torch.cuda.is_available():
|
| 34 |
+
device_map = "cuda"
|
| 35 |
+
elif hasattr(torch.backends, 'mps') and torch.backends.mps.is_available():
|
| 36 |
+
device_map = "mps" # Use MPS for Apple Silicon
|
| 37 |
+
else:
|
| 38 |
+
device_map = "cpu"
|
| 39 |
|
| 40 |
+
dtype = kwargs.pop('dtype', torch.float16 if device_map != "cpu" else torch.float32)
|
|
|
|
|
|
|
| 41 |
|
| 42 |
+
self.model = AutoModel.from_pretrained(
|
| 43 |
+
model_name,
|
| 44 |
+
dims=dims,
|
| 45 |
+
trust_remote_code=True,
|
| 46 |
+
dtype=dtype,
|
| 47 |
+
device_map=device_map,
|
| 48 |
+
**kwargs
|
| 49 |
+
)
|
| 50 |
self.model.eval()
|
| 51 |
|
| 52 |
+
self.processor = AutoProcessor.from_pretrained(
|
| 53 |
+
model_name,
|
| 54 |
+
trust_remote_code=True,
|
| 55 |
+
**kwargs
|
| 56 |
+
)
|
| 57 |
+
|
| 58 |
+
self.device = device_map
|
| 59 |
+
self.dims = dims
|
| 60 |
|
| 61 |
+
def encode_queries(
|
| 62 |
self,
|
| 63 |
+
queries: List[str]
|
|
|
|
|
|
|
| 64 |
) -> List[torch.Tensor]:
|
| 65 |
"""
|
| 66 |
Encode a list of text queries.
|
| 67 |
|
| 68 |
Args:
|
| 69 |
+
queries: List of query texts
|
|
|
|
|
|
|
| 70 |
|
| 71 |
Returns:
|
| 72 |
+
List of query embeddings
|
| 73 |
"""
|
| 74 |
+
query_inputs = self.processor.process_queries(queries)
|
| 75 |
+
query_inputs = {k: v.to(self.device) for k, v in query_inputs.items()}
|
|
|
|
|
|
|
|
|
|
| 76 |
|
| 77 |
with torch.no_grad():
|
| 78 |
+
query_embeddings = self.model(**query_inputs)
|
|
|
|
| 79 |
|
| 80 |
+
return [q.cpu() for q in query_embeddings]
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 81 |
|
| 82 |
def encode_images(
|
| 83 |
self,
|
| 84 |
+
images: List[Union[str, Image.Image]]
|
|
|
|
|
|
|
| 85 |
) -> List[torch.Tensor]:
|
| 86 |
"""
|
| 87 |
Encode a list of images.
|
| 88 |
|
| 89 |
Args:
|
| 90 |
images: List of image paths or PIL Images
|
|
|
|
|
|
|
| 91 |
|
| 92 |
Returns:
|
| 93 |
+
List of image embeddings
|
| 94 |
"""
|
| 95 |
+
image_objects = []
|
| 96 |
for img in images:
|
| 97 |
if isinstance(img, str):
|
| 98 |
+
image_objects.append(Image.open(img).convert("RGB"))
|
| 99 |
elif isinstance(img, Image.Image):
|
| 100 |
+
image_objects.append(img)
|
| 101 |
else:
|
| 102 |
raise ValueError(f"Unsupported image type: {type(img)}")
|
| 103 |
|
| 104 |
+
image_inputs = self.processor.process_images(image_objects)
|
| 105 |
+
image_inputs = {k: v.to(self.device) for k, v in image_inputs.items()}
|
|
|
|
|
|
|
|
|
|
| 106 |
|
| 107 |
with torch.no_grad():
|
| 108 |
+
image_embeddings = self.model(**image_inputs)
|
|
|
|
|
|
|
|
|
|
|
|
|
| 109 |
|
| 110 |
+
return [i.cpu() for i in image_embeddings]
|
|
|
|
|
|
|
|
|
|
| 111 |
|
| 112 |
def compute_scores(
|
| 113 |
self,
|
| 114 |
query_embeddings: List[torch.Tensor],
|
| 115 |
+
image_embeddings: List[torch.Tensor]
|
|
|
|
| 116 |
) -> torch.Tensor:
|
| 117 |
"""
|
| 118 |
+
Compute similarity scores between queries and images.
|
| 119 |
|
| 120 |
Args:
|
| 121 |
+
query_embeddings: List of query embeddings
|
| 122 |
+
image_embeddings: List of image embeddings
|
|
|
|
| 123 |
|
| 124 |
Returns:
|
| 125 |
+
Similarity scores matrix
|
| 126 |
"""
|
| 127 |
+
return self.processor.score_multi_vector(query_embeddings, image_embeddings)
|
| 128 |
+
|
| 129 |
+
def encode_and_score(
|
| 130 |
+
self,
|
| 131 |
+
queries: List[str],
|
| 132 |
+
images: List[Union[str, Image.Image]]
|
| 133 |
+
):
|
| 134 |
+
"""
|
| 135 |
+
Convenience method to encode queries and images and compute scores.
|
| 136 |
+
|
| 137 |
+
Args:
|
| 138 |
+
queries: List of query texts
|
| 139 |
+
images: List of images (paths or PIL objects)
|
| 140 |
+
|
| 141 |
+
Returns:
|
| 142 |
+
Similarity scores between queries and images
|
| 143 |
+
"""
|
| 144 |
+
query_embeddings = self.encode_queries(queries)
|
| 145 |
+
image_embeddings = self.encode_images(images)
|
| 146 |
+
return self.compute_scores(query_embeddings, image_embeddings)
|
| 147 |
|
| 148 |
|
| 149 |
# Example usage
|
| 150 |
if __name__ == "__main__":
|
| 151 |
images = [Image.new("RGB", (32, 32), color="white"), Image.new("RGB", (16, 16), color="black")]
|
|
|
|
| 152 |
queries = ["Is attention really all you need?", "What is the amount of bananas farmed in Salvador?"]
|
| 153 |
|
| 154 |
+
embedder = OpsColQwen3Embedder(
|
| 155 |
model_name="OpenSearch-AI/Ops-Colqwen3-4B",
|
| 156 |
+
dims=2560,
|
| 157 |
dtype=torch.float16,
|
| 158 |
attn_implementation="flash_attention_2",
|
| 159 |
)
|
| 160 |
|
| 161 |
+
query_embeddings = embedder.encode_queries(queries)
|
| 162 |
+
image_embeddings = embedder.encode_images(images)
|
| 163 |
+
print(query_embeddings[0].shape, image_embeddings[0].shape) # (23, 2560) (18, 2560)
|
| 164 |
+
|
| 165 |
+
scores = embedder.compute_scores(query_embeddings, image_embeddings)
|
| 166 |
|
| 167 |
+
print(f"Scores:\n{scores}")
|
|
|