Vector search is the technology powering the most intelligent applications we use daily—from product recommendations and image lookups to smart chatbots. But what happens when you need to search millions, or even billions, of these data points instantly?
The answer lies in two powerful techniques: Approximate Nearest Neighbor (ANN) and the revolutionary HNSW (Hierarchical Navigable Small-World Graph) algorithm.
ANN is a fast shortcut method that finds the “closest matches” to your query based on meaning (vectors), not just exact keywords. HNSW takes this a step further, acting like a multi-level navigation system in a massive data supermarket.
Instead of scanning every item, HNSW quickly travels from the top-level categories (sports, electronics) down to the exact shelf (running shoes) in milliseconds.
Dive into the full post to understand exactly how ANN and HNSW make lightning-fast, highly accurate AI search possible.