The Transformer Backbone, Recapped
Mixture of Experts is a modification to the transformer, so you can't understand modern LLM architecture without a clear picture of the transformer itself. This post is a focused recap of the parts that matter for the rest of the series: attention as the mechanism that mixes information across tokens, the feed-forward block that MoE replaces, and how the pieces stack into the model everyone is now modifying.
Mixture of Experts is a modification to the transformer, so you can't understand modern LLM architecture without a clear picture of the transformer itself. This post is a focused recap of the parts that matter: attention as the mechanism that mixes information across tokens, the feed-forward block that MoE replaces, and how the pieces stack into the model everyone is now modifying.