Auxiliary-Loss-Free Load Balancing in Mixture-of-Experts: How Dynamic Bias Adjustments Eliminate Gradient Conflict and Routing Collapse
Sparse Mixture-of-Experts (MoE) architectures decouple parameter count from per-token compute cost by activating only a small subset of feed-forward network (FFN) parameters for any given token. While dense transformers evaluate every parameter across all sequence positions, MoE models route tokens dynamically to specialized sub-networks, enabling parameter scaling to hundreds of billions or trillions of parameters at the inference and training cost of much smaller dense models. However, condit

