[GitHub] [lucene] jtibshirani commented on issue #11799: Indexing method for learned sparse retrieval

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jtibshirani commented on issue #11799:
URL: https://github.com/apache/lucene/issues/11799#issuecomment-1254070746

   +1 from me too, it'd be great to think through how to support this. Could you explain how the query side would look? Are the queries also sparse vectors with custom impacts?
   
   As a note, we have a `FeatureField` field type that accepts key-value pairs and stores the value in `TermFrequencyAttribute`. It's designed to help incorporate other storing signals like popularity, page rank, etc. It may not be exactly what we want for this use case, but it could provide some inspiration.


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