Update README.md

README.md

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 license: apache-2.0
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+### Generalized Contrastive Learning for Multi-Modal Retrieval and Ranking
+
+This work aims to improve and measure the ranking performance of information retrieval models, especially for retrieving relevant products given a search query.
+
+Blog post: https://www.marqo.ai/blog/generalized-contrastive-learning-for-multi-modal-retrieval-and-ranking
+
+Paper: https://arxiv.org/pdf/2404.08535.pdf
+
+### Text-only
+| Methods       | Models                     | nDCG      | ERR        | RBP       |                                                                                        
+|---------------|----------------------------|-----------|------------|-----------|
+| BM25          | -                          | 0.071     | 0.028      | 0.052     |                                                                                                   
+| E5            | e5-large-v2                | 0.335     | 0.095      | 0.289     |                                                                                                   
+| E5 (GCL)      | e5-large-v2                | **0.470** | **0.457**  | **0.374** |           
+
+### Usage
+
 ```python
 import torch.nn.functional as F