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VectorIndexRetriever, Rerank, Query mode, Response Mode

I am looking to sort VectorIndexRetriever by the rank. I see this. https://gpt-index.readthedocs.io/en/latest/core_modules/query_modules/node_postprocessors/modules.html#fixedrecencypostprocessor but not sure how can I use it

7 comments

eexplorer

does all vector stores support hybrid search? what does the values do when underlying vector store doesn't support it (alpha, hybrid values)

eexplorer

are they simply ignoreD?!

LLogan M

They are ignored yea 😅 I think only weaviate supports hybrid currently? Maybe 1 or 2 others I forgetting.

I realize none of this is documented well. It's on the todo list 😅

eexplorer

I like the way you guys abstracted it to make it standard in case the other databases start supporting it. I guess you could simply add more comments to the source code

eexplorer

When I'm using this API, what is the process to get the ranking sorting order? I'm getting better results little in the bottom of the nodes. I want the search results to be sorted by the similarity rank

eexplorer

Ideally thus should be the default order

LLogan M

Sorting by similarity should be the default I thought 🤔

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