Which rerank models are supported by OS 2.12.0 and how to deploy them?

Plugins Machine Learning
1

Hi all,

Which rerank models (in huggingface) are supported by OS 2.12.0 and how to deploy them?

Your response is highly appreciated.

2

Hi @asfoorial,

Currently we have two pre-trained models in our model server. You can register these two models:

POST /_plugins/_ml/models/_register
{
  "name": "huggingface/cross-encoders/ms-marco-MiniLM-L-6-v2",
  "version": "1.0.2",
  "model_format": "torch_script" //onnx will work too
}

POST /_plugins/_ml/models/_register
{
  "name": "huggingface/cross-encoders/ms-marco-MiniLM-L-12-v2",
  "version": "1.0.2",
  "model_format": "torch_script" //onnx will work too
}

Deploying the models will be similar like sentence embedding models.

2 articles to follow:

  1. Reranking search results - OpenSearch Documentation

  2. ml-commons/docs/tutorials/rerank/rerank_pipeline_with_Cohere_Rerank_model.md at main · opensearch-project/ml-commons · GitHub

You can also bring your own traced re-ranker BGE model. A related PR to look at: add cross-encoder tracing, config-generating, and uploading by HenryL27 · Pull Request #375 · opensearch-project/opensearch-py-ml · GitHub

Please let me know if you have any further questions.

Thanks
Dhrubo

3

Great! Thanks.

When are we expecting the new release of opensearch_py_ml?

1 Like
4

The new script in add cross-encoder tracing, config-generating, and uploading by HenryL27 · Pull Request #375 · opensearch-project/opensearch-py-ml · GitHub did work for re-ranker BGE model but failed to work for

I tried both torch_script and onnx. The torch_script failed to continue saving the trace giving
Could not export Python function call ‘XSoftmax’. Remove calls to Python functions before export. Did you forget to add @script or @script_method annotation? If this is a nn.ModuleList, add it to constants:

While the onnx saved the onnx and zip files but failed during prediction giving
{
“error”: {
“root_cause”: [
{
“type”: “translate_exception”,
“reason”: “translate_exception: java.lang.IllegalArgumentException: Input mismatch, looking for: [input_ids, attention_mask]”
}
],
“type”: “m_l_exception”,
“reason”: “m_l_exception: Failed to inference TEXT_SIMILARITY model: ZwQzA44BK0CtZG_zHaFw”,
“caused_by”: {
“type”: “privileged_action_exception”,
“reason”: “privileged_action_exception: null”,
“caused_by”: {
“type”: “translate_exception”,
“reason”: “translate_exception: java.lang.IllegalArgumentException: Input mismatch, looking for: [input_ids, attention_mask]”,
“caused_by”: {
“type”: “illegal_argument_exception”,
“reason”: “Input mismatch, looking for: [input_ids, attention_mask]”
}
}
}
},
“status”: 500
}

5

@asfoorial Thanks for looking into this. Could you please comment in the PR?

6

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