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2024-3-4 ππ We have released the BGE-VL-MLLM models on Huggingface: BGE-VL-MLLM-S1 and BGE-VL-MLLM-S2. BGE-VL-MLLM-S1 is trained exclusively on our MegaPairs dataset, achieving outstanding performance in composed image retrieval, with an 8.1% improvement on the CIRCO benchmark (mAP@5) over the previous state-of-the-art. BGE-VL-MLLM-S2 builds on BGE-VL-MLLM-S1 with an additional epoch of fine-tuning on the MMEB benchmark training set, delivering enhanced performance across a broader range of multimodal embedding tasks.
2024-12-27 ππ BGE-VL-CLIP models are released on Huggingface: BGE-VL-base and BGE-VL-large.
2024-12-19 ππ Release our paper: MegaPairs: Massive Data Synthesis For Universal Multimodal Retrieval.
In this work, we introduce MegaPairs, a novel data synthesis method that leverages open-domain images to create heterogeneous KNN triplets for universal multimodal retrieval. Our MegaPairs dataset contains over 26 million triplets, and we have trained a series of multimodal retrieval models, BGE-VL, including BGE-VL-CLIP (base and large) and BGE-VL-MLLM.
BGE-VL achieve state-of-the-art performance on four popular zero-shot composed image retrieval benchmarks and the massive multimodal embedding benchmark (MMEB). Extensive experiments demonstrate the efficiency, scalability, and generalization features of MegaPairs. Please refer to our paper for more details.
Install Sentence Transformers:
This model supports text, image, and combined text+image inputs. Images must be resized to 512x512, as the model was trained with that resolution. Pass a prompt with a task instruction to format inputs as queries, or omit it to format as candidates.
You can easily use BGE-VL-CLIP models based on transformers
See the demo for a complete example of using BGE-VL for multimodel retrieval.
BGE-VL sets a new performance benchmark in zero-shot composed image retrieval tasks. On the CIRCO benchmark, our BGE-VL-base model, with only 149 million parameters, surpasses all previous models, including those with 50 times more parameters. Additionally, BGE-VL-MLLM achieves an 8.1% improvement over the previous state-of-the-art model.
BGE-VL-MLLM achieves state-of-the-art zero-shot performance on the Massive Multimodal Embedding Benchmark (MMEB), despite being trained only on the ImageText-to-Image paradigm. This demonstrates the excellent generalization capability of MegaPairs for multimodal embedding.
After fine-tuning on downstream tasks, BGE-VL-MLLM maintains its leading performance. Notably, it surpasses the previous state-of-the-art by 7.1% on the MMEB out-of-distribution (OOD) set. These results demonstrate the robust generalization capability of BGE-VL-MLLM and highlight the potential of MegaPairs as foundational training data for universal multimodal embedding.
MegaPairs showcases scalability: BGE-VL-base improves as training data increases. It also demonstrates efficiency: with just 0.5M training samples, BGE-VL-base significantly outperforms MagicLens, which uses the same CLIP-base backbone and was trained on 36.7M samples.
The annotations for MegaPairs and the BGE-VL models are released under the MIT License [blocked]. The images in MegaPairs originate from the Recap-Datacomp, which is released under the CC BY 4.0 license.
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pip install sentence_transformers[image]import torchfrom sentence_transformers import SentenceTransformerfrom PIL import Image
model = SentenceTransformer("BAAI/BGE-VL-MLLM-S1", model_kwargs={"torch_dtype": torch.float16})
# Composed image retrieval: text + image queryquery_img = Image.open("./assets/cir_query.png").resize((512, 512))query_emb = model.encode( {"text": "Make the background dark, as if the camera has taken the photo at night", "image": query_img}, prompt="Retrieve the target image that best meets the combined criteria by using both the provided image and the image retrieval instructions: ",)
# Image-only candidates (no prompt = candidate format)candidate_imgs = [ Image.open("./assets/cir_candi_1.png").resize((512, 512)), Image.open("./assets/cir_candi_2.png").resize((512, 512)),]candidate_embs = model.encode(candidate_imgs, batch_size=1)print(candidate_embs.shape)# (2, 4096)
similarities = model.similarity(query_emb, candidate_embs)print(similarities)# tensor([[0.4111, 0.1819]], dtype=torch.float16)import torchfrom transformers import AutoModel
MODEL_NAME = "BAAI/BGE-VL-base" # or "BAAI/BGE-VL-large"
model = AutoModel.from_pretrained(MODEL_NAME, trust_remote_code=True) # You must set trust_remote_code=Truemodel.set_processor(MODEL_NAME)model.eval()
with torch.no_grad(): query = model.encode( images = "./assets/cir_query.png", text = "Make the background dark, as if the camera has taken the photo at night" )
candidates = model.encode( images = ["./assets/cir_candi_1.png", "./assets/cir_candi_2.png"] ) scores = query @ candidates.Tprint(scores)import torchfrom transformers import AutoModelfrom PIL import Image
MODEL_NAME= "BAAI/BGE-VL-MLLM-S1"
model = AutoModel.from_pretrained(MODEL_NAME, trust_remote_code=True)model.eval()model.cuda()
with torch.no_grad(): model.set_processor(MODEL_NAME)
query_inputs = model.data_process( text="Make the background dark, as if the camera has taken the photo at night", images="./assets/cir_query.png", q_or_c="q", task_instruction="Retrieve the target image that best meets the combined criteria by using both the provided image and the image retrieval instructions: " )
candidate_inputs = model.data_process( images=["./assets/cir_candi_1.png", "./assets/cir_candi_2.png"], q_or_c="c", )
query_embs = model(**query_inputs, output_hidden_states=True)[:, -1, :] candi_embs = model(**candidate_inputs, output_hidden_states=True)[:, -1, :] query_embs = torch.nn.functional.normalize(query_embs, dim=-1) candi_embs = torch.nn.functional.normalize(candi_embs, dim=-1)
scores = torch.matmul(query_embs, candi_embs.T)print(scores)@article{zhou2024megapairs, title={MegaPairs: Massive Data Synthesis For Universal Multimodal Retrieval}, author={Zhou, Junjie and Liu, Zheng and Liu, Ze and Xiao, Shitao and Wang, Yueze and Zhao, Bo and Zhang, Chen Jason and Lian, Defu and Xiong, Yongping}, journal={arXiv preprint arXiv:2412.14475}, year={2024}}