#SK-SemanticIndex

Overview of the Copilot Retrieval API in beta, today’s limits, and how to call it with user-delegated tokens via OBO.

SQL Server vector storage and search SQL Server 2025 with DiskANN

Using Azure Cosmos DB as an integrated vector store (DiskANN) for chat sessions, memory, and retrieval

What Qdrant is, why it’s great for vector search, how to run it with Docker, and how to use it with Semantic Kernel in C#.

Getting Started with AI Search

How to chunk your data, filter it smartly, and combine BM25 with vectors for reliable retrieval.

Practical RAG patterns that work in production and how to evaluate them with recall, groundedness, and latency.

A practical primer on cosine similarity and common ANN indexes: HNSW, IVF, and PQ — with small, concrete examples.

Getting Started with Vector Search