Metadata Design: The Foundation of Filtering in RAG
Metadata design is the foundation of retrieving the right chunk for the right user in RAG: the required field set, authorization scope, date and version fields, and filtered retrieval quality.
RAG is the most frequently deployed architecture in enterprise AI, because a company's knowledge lives in its documents, not inside the model. This cluster covers every link in the RAG chain — from chunking strategy and embedding model selection to hybrid search, reranking and evaluation.
Metadata design is the foundation of retrieving the right chunk for the right user in RAG: the required field set, authorization scope, date and version fields, and filtered retrieval quality.
RAG evaluation is a methodology that measures retrieval quality (recall@k, MRR, nDCG) and generation quality (faithfulness, answer relevance) separately. A layer-by-layer guide.
The embedding model choice determines the fate of Turkish RAG quality. Multilingual vs Turkish-specific, dimension and performance, reading benchmarks, and building your own evaluation.
What is hybrid search? A method that combines semantic (vector) search with BM25 keyword search, fusing scores to raise retrieval quality and hit rate in RAG systems.
How is enterprise RAG built? Pipeline layers, document preparation, retrieval, generation and quality measurement; a technical guide to enterprise RAG architecture and setup.
In RAG, chunking strategy is not one setting; it varies by document type. The right chunk size, overlap ratio and method for contracts, tables and manuals.
What is data quality? Data quality is the sum of dimensions — accuracy, completeness, consistency, timeliness, uniqueness, and validity — that determine data's fitness for its intended use. This guide: a clear definition, the six quality dimensions, measurement metrics, the data cleaning process, the impact on AI and RAG projects, common mistakes, and FAQs.
The four core metrics for measuring RAG systems: faithfulness, answer relevancy, context precision and recall. Evaluation with RAGAS, thresholds and context trust.
Pure vector search misses exact terms; pure keyword search misses meaning. A practical guide to combining BM25 and vector search in RAG with RRF and contextual retrieval.
Building RAG is easy, proving it reliable is hard. Retrieval/generation metrics, reference-free evaluation with RAGAS, OpenTelemetry spans, and cost-per-successful-output.
2026 RAG is no longer linear. Adaptive routing, the agentic retrieve-reason-retrieve loop, five production patterns, and the highest-ROI intervention: hybrid retrieval + reranker.
In 2026 'vector as a feature' wins: PostgreSQL + pgvector suffices for most scenarios. Three architectural thresholds, evaluation traps, and selection criteria.
Agentic RAG moves retrieval inside the agent loop; with context engineering it cuts token usage 19-53%. Production patterns and a decision framework.
Text RAG misses tables, charts, and layout. A field guide to multimodal RAG architectures (ColPali, vision embeddings), evaluation, and KVKK.
2026 vector database guide: Pinecone, Weaviate, Qdrant, Milvus, pgvector comparison table, decision framework, cost, KVKK, and the 'start with pgvector' advice.
The way to boost RAG accuracy is hybrid search: combining BM25 and vector with RRF and adding a cross-encoder reranker. The numbers, the architecture, and Turkish tips.
We compare Qdrant, Pinecone, Weaviate, Milvus and pgvector on scale, latency, hybrid search and KVKK. A 2026 decision flow, table, and selection checklist.
RAG or long context in the million-token era? A practical guide to hybrid architecture, BM25 + vector, RRF, reranking, contextual retrieval, and the KVKK angle.
Not 'which one' but 'which fits me.' Real benchmark data, a decision framework, the recall-latency tradeoff, and KVKK/data residency. Synthetic benchmarks lie.
Measure your RAG system's real quality with four core metrics: faithfulness, answer relevance, context precision, and recall. Ragas, LLM-as-a-judge, and Turkish challenges.
RAG didn't die, it matured. Raise retrieval accuracy with late chunking, contextual retrieval, hybrid search, and reranking. A practical 2026 guide for Turkish and KVKK contexts.
Choosing a vector database depends on scale, latency and operations. I compare pgvector, Qdrant, Milvus and Pinecone with 2026 benchmarks and a decision framework.
Agentic RAG is not ordinary RAG. I explain the router, ReAct, plan-execute, multi-agent retrieval and self-RAG patterns, and when to choose each.
Do you really need a reranker? When reranking adds value and when it is unnecessary in a RAG retrieval pipeline, cross-encoders, benchmarking, and a decision guide.
Grouped by format, newest first within each group.
RAG (Retrieval-Augmented Generation) is an architecture that grounds large-language-model answers in chunks retrieved from the organization's own documents or data sources, providing both freshness and citations.