Knowledge AI & RAG

Your knowledge. A governed view of the world.

We combine indexed internal knowledge with approved external sources when the use case requires it. Access rights, freshness and provenance shape retrieval; grounding checks distinguish supporting evidence from model inference.

RAG knowledge architecture illustration linking an internal index, approved Internet sources and a separate model through controlled boundaries.
The starting point

Retrieval should make evidence usable.

The source strategy, indexing quality and evaluation determine whether retrieved context helps. We make the scope of knowledge visible instead of presenting every model answer as a verified fact.

01

Access

Can users retrieve only the information they are authorised to see?

02

Coverage

Are internal sources sufficient, current and relevant for the question?

03

Evidence

Can a reader trace a claim to the source that actually supports it?

What we do

Capabilities shaped around your use.

Reliable ingestion

Connect documents and business systems. Handle OCR, structure, metadata, versions, deletions and synchronisation failures.

Retrieval that fits the content

Evaluate keyword, vector and hybrid search, chunking and reranking. Apply user permissions before information enters the model context.

Answers users can verify

Provide source references, distinguish evidence from inference and support abstention when sources are missing, stale or inconsistent.

Governed external retrieval

When authorised, add curated external sources or search tools. Keep origin, freshness, trust level and conflicts visible, separate from internal authority.

Architecture, explained

Internal authority. External context. Explicit controls.

RAG architecture showing identity and query routing, permission-filtered internal indexing, optional approved Internet retrieval, model context, grounding review and sourced answers.
Reference flow. Open the full-size architecture
  1. Start with identity and scope

    The request carries the user’s permissions and the source policy. Document access is enforced before retrieval.

  2. Choose evidence sources

    The internal index is authoritative where defined. Optional Internet retrieval uses approved sources, query redaction and an egress boundary.

  3. Retrieve and inspect

    Lexical or vector search and reranking select passages; freshness, provenance and conflicting evidence remain visible.

  4. Ground and route the response

    The model uses the selected context. Unsupported claims, missing evidence or sensitive decisions trigger abstention or human review; retrieved content is treated as untrusted data.

RAG does not erase a model’s learned knowledge, and indexing is not weight training. A limited corpus can leave gaps in evidence or freshness. External retrieval can help, with additional latency, cost and security risks; it does not guarantee completeness or accuracy.

What you take away

Deliverables you can use.

01

Source & permissions map

Authoritative sources, approved external scope, access rules, freshness and deletion procedures.

02

Retrieval evaluation

Representative questions covering relevance, coverage, provenance and access leakage.

03

Knowledge assistant

An agreed source-referenced experience, feedback mechanism and quality monitoring plan.

How we work

A clear route from assumptions to evidence.

01

Map sources

Define authority, ownership, access and update rules.

02

Build retrieval

Implement ingestion, indexing and the permitted external boundary.

03

Evaluate

Test retrieval relevance, evidence support and failure behaviour.

04

Operate

Track source changes, feedback, quality and access controls.

FAQ

Knowledge AI & RAG, answered

Does RAG eliminate hallucinations?

No. It can improve grounding, but retrieval failures, misleading sources and unsupported generation remain possible. We evaluate these failure modes and define appropriate controls.

Is RAG the same as fine-tuning?

No. RAG retrieves information at inference time. Fine-tuning adapts model behaviour through training; it is not a dependable mechanism for keeping factual knowledge current.

Will internal documents limit the model to a closed world?

The model retains its learned capabilities. The application can also use approved external sources, depending on the data policy. We make the scope of evidence explicit.

Does RAG prevent prompt injection?

No. Retrieved content must be treated as untrusted data. Source controls, instruction separation, scoped tools and validation are still required.

Pixels Trade team in an evening workshop
Let’s talk

Start with your use case.

Bring the workflow, the constraints and the decision you need to make. Together we can define a useful next step and the evidence it should produce.