Problemsby IbisPinecone vector search quality is hard to get right
Databases2 posts from 1 person2d active+00 posts in the last 7 days, 1 the 7 days before (fading)Unverified
Posts per day
The posts behind it
2, newest firstPython: Vector store filters raise NotImplementedError for negative number literals such as x.price > -5## What happens A filter lambda that uses a negative number literal, such as `lambda x: x.temperature > -5`, raises `NotImplementedError` in nine of the eleven Python vector store connectors. Azure AI Search and Azure Cosmos DB NoSQL accept it. Python parses `-5` as...microsoft/semantic-kernel · VANDRANKIOpen ↗Python: Chroma, MongoDB, Pinecone and Weaviate filters raise NotImplementedError for 'in' with a list literal (and Pinecone 'not' raises TypeError)## What happens In the Python vector store connectors for Chroma, MongoDB Atlas, Pinecone and Weaviate, a filter lambda that uses `in` or `not in` with a list literal always fails with `NotImplementedError: Unsupported AST node: `. The `ast.In()` and `ast.NotIn()` branches exist...microsoft/semantic-kernel · VANDRANKIOpen ↗
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About this problem
Evidence
2 posts from 1 person in 1 place, about 2 a week over 3 days. Mostly on microsoft/semantic-kernel. Tools named alongside: Weaviate, MongoDB, Qdrant, Redis.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts that state a pain and match the "vector-search" rule about Pinecone. First post Oct 6, 2026, latest Oct 8, 2026. Unverified: fewer than 3 posts, or one person or place only. Method
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Pinecone vector search quality is hard to get right (2 posts)