AI Lesson & Submodule

LayerNorm

Deconstruct mean-variance normalization across feature layers.

Why This Matters

Layer Normalization stabilizes learning by scaling values to standard distributions at each layer.

What You Will Learn

  • Calculate layer statistics
  • Compare Pre-LN vs Post-LN
  • Analyze scaling weights

Concepts Covered

Mean-variance normalizationsPre-LN vs Post-LN stabilityNormalization weights parameters

Mapped Foundation Project: Mini Transformer Block Explainer

Visual deconstruction of a standard decoder block, outlining normalizations, skip links, and output projections.

Architecture Preview

Block-by-block diagram tracking vector changes as inputs pass through decoder normalizations and linear mappings.

Input TokensLayer Norm Layer 1Multi-Head Attention Block
Tech Stack Planned
ReactTypeScriptFramer Motion
GitHub: Coming SoonLive Demo: Coming Soon
Coming Soon

Technical Interview Value

  • ?Why does modern decoder architectures (like Llama/GPT) use Pre-LN instead of Post-LN?