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Pretraining, alignment, RAG and agents. The fastest moving part of any interview loop.
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60🟡Pretraining → SFT → RLHFmust-know5 min🟡Fine-Tune vs RAG vs Prompt: Choosingmust-know5 min🟡Retrieval-Augmented Generationmust-know5 min🟡Why LLMs Hallucinatemust-know5 min🔴RLHF Explainedmust-know5 min🔴LoRA & Parameter-Efficient Fine-Tuningmust-know5 min🔴Evaluating LLM Systemsmust-know5 min🟢Why Next-Token Prediction Works5 min🟢Prompt Engineering That Works5 min🟢Zero-shot, Few-shot & In-Context Learning5 min🟢Temperature, Top-p & Sampling5 min🟡Chain-of-Thought & Reasoning Models5 min🟡Chunking Strategies for RAG5 min🟡Vector Databases & ANN Search5 min🟡Grounding & Citation Enforcement5 min🟡Context Windows & Long-Context Tricks5 min🟡Lost in the Middle4 min🟡Tool Use & Function Calling5 min🟡Model Context Protocol (MCP)5 min🟡Structured Output & Constrained Decoding5 min🟡Prompt Caching4 min🟡Cutting LLM Cost in Production5 min🟡Prompt Injection & Jailbreaks5 min🟡Guardrails & Output Filtering5 min🟡Choosing an Embedding Model5 min🟡Helpful, Honest, Harmless5 min🟡Chat Templates4 min🟡Semantic Caching4 min🔴Reward Models & Reward Hacking5 min🔴DPO vs PPO5 min🔴Constitutional AI & RLAIF5 min🔴Scaling Laws & Chinchilla5 min🔴Emergent Abilities: Real or Mirage?5 min🔴Mixture of Experts5 min🔴QLoRA & 4-bit Fine-Tuning5 min🔴Instruction Tuning & Data Curation5 min🔴Test-Time Compute & Inference Scaling5 min🔴HNSW vs IVF vs Flat Indexes5 min🔴Hybrid Search & Reranking5 min🔴Evaluating a RAG Pipeline5 min🔴GraphRAG & Structured Retrieval5 min🔴Agent Loops & Planning5 min🔴Multi-Agent Systems5 min🔴Agent Memory & State5 min🔴LLM-as-a-Judge5 min🔴Inference Optimization & Batching5 min🔴Speculative Decoding5 min🔴Multimodal Models (VLMs)5 min🔴Synthetic Data Generation5 min🔴Distilling a Large Model into a Small One5 min🔴Direct Preference Optimization5 min🔴KTO & ORPO5 min🔴Curating Preference Data5 min🔴Sycophancy & Over-Refusal5 min🔴Per-Token Loss Masking4 min🔴Agentic RAG5 min🔴Multimodal RAG5 min🔴RAG Evaluation Frameworks5 min🔴Mitigating Hallucination5 min🔴GGUF, AWQ & LLM Quantization5 min