Ninestack
Service

RAG - Retrieval-Augmented Generation

RAG that cites the source — hybrid retrieval, learned re-ranking, prompts that admit uncertainty, and answers your team can audit.

Overview

Large language models are remarkably capable, but they cannot know what is in your internal documentation, recent policy changes, or proprietary datasets. Retrieval-augmented generation solves this by connecting an LLM to your specific knowledge sources at query time, enabling it to generate responses that are grounded in your actual data rather than general training knowledge.

Building an effective RAG system is more nuanced than connecting a vector database to an LLM. The quality of the output depends critically on how documents are chunked, how embeddings are generated, how retrieval is performed, and how retrieved context is presented to the language model. Poor design at any stage produces responses that are irrelevant, incomplete, or misleadingly confident.

Our RAG implementations are engineered for accuracy and trust. We build multi-stage retrieval pipelines that combine semantic search with structured filters, implement re-ranking to surface the most relevant passages, and design prompts that instruct the model to cite sources and acknowledge uncertainty. The result is a system your team can rely on for decisions that matter.

Capabilities

What RAG Solutions covers.

01

Document Processing & Chunking

Intelligent document parsing that handles PDFs, web pages, databases, and unstructured text, with chunking strategies optimized for retrieval relevance and context preservation.

02

Embedding & Vector Search

High-quality embedding pipelines with optimized vector indexes that deliver fast, semantically accurate retrieval across large document collections.

03

Hybrid Retrieval Strategies

Systems that combine semantic search, keyword matching, metadata filtering, and knowledge graph traversal to maximize recall and precision.

04

Re-Ranking & Context Assembly

Multi-stage retrieval with learned re-ranking models that select and order the most relevant passages before presenting them to the language model.

05

Source Attribution & Citations

Response generation that includes verifiable citations, linking each claim to the specific source document and passage that supports it.

06

Continuous Knowledge Sync

Automated pipelines that detect changes in your source documents and update the retrieval index, ensuring responses reflect your latest information.

Where it ships

Use cases we have shipped.

01

Enterprise knowledge management system that enables employees to query internal policies, procedures, and technical documentation conversationally

02

Legal research tool that retrieves relevant case law, statutes, and regulatory guidance to support attorneys in case preparation

03

Customer support system that grounds responses in product documentation, known issues, and resolution histories

04

Compliance assistant that answers regulatory questions by referencing the specific clauses and guidelines that apply

05

Technical documentation search that helps engineers find relevant API references, architecture decisions, and troubleshooting guides

Process

How we run the engagement.

Step 01

Knowledge Audit & Ingestion Design

We catalog your data sources, assess document types and quality, and design the ingestion and chunking pipeline that will feed the retrieval system.

Step 02

Retrieval Pipeline Development

Our team builds the embedding generation, vector indexing, and retrieval infrastructure, optimizing for your specific content characteristics and query patterns.

Step 03

Generation & Guardrail Configuration

We configure the language model integration with prompt engineering, source attribution, hallucination mitigation, and output formatting fit to your use case.

Step 04

Evaluation & Production Deployment

Systematic evaluation against ground truth datasets, followed by production deployment with monitoring for retrieval quality, response accuracy, and user satisfaction.

FAQ

Common questions.

What is Retrieval-Augmented Generation (RAG)?+
RAG is a technique that combines large language models with a retrieval system that searches your organization's documents and data. Instead of relying solely on the model's training data, RAG grounds responses in your specific knowledge base, reducing hallucinations and ensuring accurate, up-to-date answers.
What types of documents can a RAG system process?+
RAG systems can process a wide range of document types including PDFs, Word documents, knowledge base articles, wikis, code repositories, emails, and structured databases through document processing and chunking pipelines.
How does RAG prevent AI hallucinations?+
RAG grounds LLM responses in retrieved source material and includes source attribution and citations, allowing users to verify the information. Guardrails ensure the model only generates responses supported by the retrieved context.
Can RAG work with data that changes frequently?+
Yes. We implement continuous knowledge sync pipelines that automatically detect changes in your source documents and update the retrieval index, ensuring the system always has access to current information.
What retrieval strategies do you use?+
We implement hybrid retrieval strategies combining embedding-based vector search with keyword-based search, followed by re-ranking and context assembly to ensure the most relevant information is provided to the language model.
Start a RAG Solutions engagement

Pick the date. We’ll scope the build.

Tell us the constraint, the deadline, and the system. One business day to a scoped plan.