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Advanced RAG with Llama 3 in Langchain | Chat with PDF using Free Embeddings, Reranker & LlamaParse

Venelin Valkov · 3 min read

Building a high-quality “chat with your PDF” system hinges less on the language model and more on the pipeline around it: parsing complex documents...

Advanced RAGPDF ParsingEmbeddings

How RAG Finds Answers in Millions of Documents | Embeddings, Vector Databases, LangChain & Supabase

Venelin Valkov · 3 min read

Retrieval in RAG hinges on one practical step: turning a user question into a vector and then finding the most semantically similar document chunks...

RAG RetrievalEmbeddingsCosine Similarity

LangChain Tutorial: The Core Building Blocks | LLMs, JSON output, RAGs, Tools and Observability

Venelin Valkov · 3 min read

LangChain’s practical value comes from a small set of reusable building blocks: a unified way to call different LLM providers, structured outputs...

LangChain Building BlocksLLM Provider AbstractionJSON Structured Output