AI EngineeringInterview preparation
Intermediate·Concept·2 min read

AI search

Practice this question

Overview

AI search often uses semantic or hybrid retrieval to return relevant results. Generation is optional. A result list can be sufficient.

Why this matters

Users describe concepts without exact keyword knowledge.

An everyday example

A librarian understands the subject you mean.

A technical example

/search?q=accident+paperwork returns authorized policy sections.

How it works

  1. Validate query
  2. Filter scope
  3. Semantic/keyword search
  4. Rank
  5. Return excerpts/links.

Architecture and flow

UI search → Node → hybrid index → source results.

The insurance assistant example

Find relevant claim document checklists.

When to use it

Discovery and direct evidence access.

When to avoid it

Do not add generation when users only need source navigation.

Interview answer

“Semantic search improves discovery; an LLM answer is an optional layer after retrieval.”

Benefits, trade-offs, and production considerations

Search-only can be faster, cheaper, and easier to verify. Recheck source access when opening results.

Adapted from 13_AI.MD · “AI search”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.