RAG & Knowledge

AI Knowledge Systems & RAG

Retrieval-Augmented Generation (RAG) done right is an engineering challenge of document chunking, embedding strategy, and precision retrieval. We build grounded knowledge systems that answer exclusively from your verified data, eliminating hallucinations.

What We Deliver

  • Document ingestion and chunking pipelines for PDFs, Notion, Confluence, and Drive
  • Hybrid search combining dense vector embeddings with sparse BM25 keyword matching
  • Inline source citations and confidence-scored answer generation
  • Evaluation datasets and benchmarks to scientifically measure accuracy over time
Human Oversight & Control

Verifiable Source Citations

Every response provides direct links and page references to the underlying source document. If corroborating evidence does not exist in the indexed files, the system politely declines to answer.

Delivery Methodology

How we build and deploy.

Structured engagement from initial process audit to live production monitoring.

01

Document Corpus Audit & Structuring

We inspect your files—file types, table density, domain jargon, and access permissions—to choose the optimal chunking strategy.

02

Embedding Benchmark & Indexing

We test multiple embedding models against your actual terminology and index vectors into pgvector or Qdrant.

03

Hybrid Search & Cross-Encoder Reranking

We build a multi-stage retrieval chain combining semantic vector search, BM25 exact match, and cross-encoder reranking.

04

Citation Layer & Confidence Filtering

We configure the synthesis model to include inline citations and enforce strict confidence cutoffs.

05

Evaluation Benchmark & Production Deploy

We create a golden test dataset of domain questions, measure retrieval precision, and deploy with monitoring.

Problems Solved

Operational challenges we eliminate.

The Bottleneck

Your existing chatbot confidently makes up incorrect answers

Our Solution

We enforce strict retrieval grounding: answers are generated solely from retrieved chunks with source citations.

The Bottleneck

Standard vector search returns irrelevant noise for specific technical terms

Our Solution

We deploy hybrid search and cross-encoder reranking, ensuring specific names and codes match accurately.

The Bottleneck

Document updates never make it into chatbot answers

Our Solution

Our incremental ingestion pipelines listen to file changes and re-index updated documents within minutes.

Technical Depth

Under the hood.

Deep architectural rigor built for software engineers and technical decision-makers.

Hybrid Dense + Sparse Search

Combines vector embeddings for conceptual understanding with BM25 keyword matching for exact part numbers and acronyms.

Hierarchical Parent-Child Chunking

Retrieves granular small chunks for precision while feeding broader parent context to the LLM for coherent synthesis.

Cross-Encoder Reranking

Reranks the top 25 retrieved passages using cross-encoders to ensure top-5 relevance before generating answers.

Incremental Vector Synchronization

Automated webhooks detect document edits, recalculating embeddings for modified files without costly full re-indexing.

Common Use Cases

Where this applies.

Internal Employee Knowledge Assistant

Helps staff search thousands of company SOPs, HR policies, and technical wikis inside Slack or web.

Customer-Facing Technical Docs Search

Assists software developers and clients with instant, code-accurate answers from API documentation.

Compliance & Policy Auditing

Cross-references internal operating procedures against regulatory requirements with exact paragraph citations.

Contract & Agreement Research

Enables legal and finance teams to query complex supplier agreements and service contracts.

Commercial Workflows

Related business use cases.

Why Lesscode

Verified delivery standards.

85% faster

Underwriting Acceleration

Finject MCA brokerage CRM with AI statement parsing

98% compliance

Brand-Compliant Social Reach

PostAutoPilot distributed social automation platform

$300K+

Client Value Delivered

Over 200+ projects shipped across SaaS, AI, and workflow automation

100% IP

Intellectual Property Guarantee

Clients own 100% of all custom code, prompt pipelines, and databases upon launch

Frequently Asked Questions

Common questions about ai knowledge systems & rag.

Q.What document formats can the system ingest?

PDFs, Word documents, Google Docs, Notion, Confluence, Markdown, HTML, CSVs, and scanned documents via OCR preprocessing.

Q.How large can our document library be?

Our architectures easily scale to hundreds of thousands of documents using sharded indexes, batched embeddings, and relational PostgreSQL metadata.

Q.Can employees see documents they do not have clearance for?

No. We integrate role-based access control (RBAC) so the retrieval engine filters chunks according to the requesting user's identity.

Selected Case Studies

Real software we have shipped.

New business / 2026

Have a process that should work better?

Bring us the bottleneck, the brittle build, or the idea. We'll give you a direct read on what to do next.