Back to RAG Architecture
Semantic Search

Semantic Search Implementation

Build search systems that understand what users mean, not just what they type. Semantic search transforms how your organization discovers and accesses knowledge with AI-powered relevance.

10x

Better Relevance

<100ms

Query Latency

Natural

Language Queries

Capabilities

Advanced search capabilities

Meaning-Based Search

Find content based on semantic meaning rather than exact keyword matches. Understands synonyms, context, and intent.

"'cost reduction strategies' finds 'budget optimization methods'"

"'employee onboarding' finds 'new hire orientation'"

Hybrid Search

Combine semantic search with traditional keyword search for the best of both worlds.

"Product codes + descriptions"

"Technical terms + concepts"

Query Understanding

Parse user queries to extract entities, intent, and filters for more precise results.

"'sales report from Q3 2024' extracts date filter"

"'contracts with Acme' extracts company filter"

Reranking

Use cross-encoder models to rerank initial results for maximum relevance.

"Boost recent documents"

"Prioritize user's department content"

Patterns

Search architecture patterns

Pure Semantic

Vector similarity search only

Best for: Conceptual queries, explorationAccuracy: High for meaning

Hybrid (BM25 + Vector)

Combine keyword and semantic scores

Best for: General-purpose searchAccuracy: Best overall

Filtered Semantic

Apply metadata filters before vector search

Best for: Structured contentAccuracy: High precision

Multi-Stage

Fast retrieval → accurate reranking

Best for: Large document setsAccuracy: Highest quality

Query Intelligence

Query understanding features

Natural language understanding
Query expansion with synonyms
Intent classification
Entity extraction
Date/time parsing
Facet detection
Spell correction
Query suggestions
Multi-language support
Voice query support
Conversational search
Search history learning

Reranking

Reranking models for precision

Cohere Rerank

Cloud-based, high accuracy

Cross-Encoder (MS MARCO)

Self-hosted, good balance

ColBERT

Late interaction, fast reranking

MonoT5

Sequence-to-sequence reranker

Use Cases

Semantic search applications

Enterprise Knowledge Search

Search across wikis, documents, Slack, and email with natural language queries.

Customer Support

Find relevant help articles and past tickets to resolve issues faster.

Legal Discovery

Search contracts and case files by concept rather than exact terms.

Research & Analysis

Discover relevant research papers, reports, and data across sources.

Product Catalog

Help customers find products with descriptive, conversational queries.

Code Search

Find functions and code patterns using natural language descriptions.

Process

Implementation process

01

Requirements Analysis

Understand query patterns, content types, and relevance criteria

02

Index Design

Configure embedding models, chunking, and metadata schema

03

Query Pipeline

Build query understanding, retrieval, and reranking stages

04

Relevance Tuning

Optimize search quality using feedback and evaluation metrics

Ready to implement semantic search?

Let's build a search system that truly understands your users and your content.

Start Search Project