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https://issues.apache.org/jira/browse/LUCENE-10471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17566874#comment-17566874
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Robert Muir commented on LUCENE-10471:
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The problem is that nobody will ever want to *reduce* the limit in the future.
Let's be honest, once we support a limit of N, nobody will want to ever make it
smaller because of the potential users who wouldn't be able to use it anymore.
So because this is a "one-way" decision, it needs serious justification,
benchmarks, etc etc. Regardless of how the picture looks, its definitely not
something we should be "rushing" into 9.3
> Increase the number of dims for KNN vectors to 2048
> ---------------------------------------------------
>
> Key: LUCENE-10471
> URL: https://issues.apache.org/jira/browse/LUCENE-10471
> Project: Lucene - Core
> Issue Type: Wish
> Reporter: Mayya Sharipova
> Priority: Trivial
> Time Spent: 40m
> Remaining Estimate: 0h
>
> The current maximum allowed number of dimensions is equal to 1024. But we see
> in practice a couple well-known models that produce vectors with > 1024
> dimensions (e.g
> [mobilenet_v2|https://tfhub.dev/google/imagenet/mobilenet_v2_035_224/feature_vector/1]
> uses 1280d vectors, OpenAI / GPT-3 Babbage uses 2048d vectors). Increasing
> max dims to `2048` will satisfy these use cases.
> I am wondering if anybody has strong objections against this.
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