Foundations of Hybrid Search in Node.js

Identify performance bottlenecks caused by synchronous, on-the-fly data processing in a Node.js application.

Calculate cosine similarity between a query vector and an array of document vectors in memory.

Implement a keyword-based ranking algorithm for an array of text documents in memory.

Combine keyword scores and vector similarity scores using Reciprocal Rank Fusion (RRF) to produce a hybrid search result.