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README.md
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license:
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language:
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base_model:
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# zerank-1-small: Smaller, faster version of zerank-1
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It is an open-weights reranker model meant to be integrated into RAG applications to rerank results from preliminary search methods such as embeddings, BM25, and hybrid search.
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## How to Use
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print(scores)
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```
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## Evaluations
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| Task | Embedding | cohere-rerank-v3.5 | Salesforce/Llama-rank-v1 | **zerank-1-small** | zerank-1 |
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|----------------|-----------|--------------------|--------------------------|----------------|----------|
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| Medical | 0.619 | 0.750 | 0.719 | **0.773** | 0.796 |
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| STEM | 0.401 | 0.510 | 0.595 | **0.680** | 0.694 |
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Comparing BM25 and Hybrid Search without and with zerank-1
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<img src="https://cdn-uploads.huggingface.co/production/uploads/67776f9dcd9c9435499eafc8/2GPVHFrI39FspnSNklhsM.png" alt="Description" width="400"/> <img src="https://cdn-uploads.huggingface.co/production/uploads/67776f9dcd9c9435499eafc8/dwYo2D7hoL8QiE8u3yqr9.png" alt="Description" width="400"/>
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## Citation
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**BibTeX:**
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Coming soon!
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**APA:**
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Coming soon!
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license: apache-2.0
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language:
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- en
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base_model:
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- stem
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- medical
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<img src="https://i.imgur.com/oxvhvQu.png"/>
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# Releasing zeroentropy/zerank-1-small
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In search enginers, [rerankers are crucial](https://www.zeroentropy.dev/blog/what-is-a-reranker-and-do-i-need-one) for improving the accuracy of your retrieval system.
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This 1.7B reranker is the smaller version of our flagship model [zeroentropy/zerank-1](https://huggingface.co/zeroentropy/zerank-1). Though the model is over 2x smaller, it maintains nearly the same standard of performance, continuing to outperform other popular rerankers, and displaying massive accuracy gains over traditional vector search.
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We release this model under the open-source Apache 2.0 license, in order to support the open-source community and push the frontier of what's possible with open-source models.
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## How to Use
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print(scores)
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```
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The model can also be inferenced using ZeroEntropy's [/models/rerank](https://docs.zeroentropy.dev/api-reference/models/rerank) endpoint.
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## Evaluations
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NDCG@10 scores between `zerank-1-small` and competing closed-source proprietary rerankers. Since we are evaluating rerankers, OpenAI's `text-embedding-3-small` is used as an initial retriever for the Top 100 candidate documents.
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| Task | Embedding | cohere-rerank-v3.5 | Salesforce/Llama-rank-v1 | **zerank-1-small** | zerank-1 |
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|----------------|-----------|--------------------|--------------------------|----------------|----------|
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| Medical | 0.619 | 0.750 | 0.719 | **0.773** | 0.796 |
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| STEM | 0.401 | 0.510 | 0.595 | **0.680** | 0.694 |
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Comparing BM25 and Hybrid Search without and with `zerank-1-small`:
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<img src="https://cdn-uploads.huggingface.co/production/uploads/67776f9dcd9c9435499eafc8/2GPVHFrI39FspnSNklhsM.png" alt="Description" width="400"/> <img src="https://cdn-uploads.huggingface.co/production/uploads/67776f9dcd9c9435499eafc8/dwYo2D7hoL8QiE8u3yqr9.png" alt="Description" width="400"/>
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