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Multi-Head Mixture-of-Experts
April 24, 2024, 4:42 a.m. | Xun Wu, Shaohan Huang, Wenhui Wang, Furu Wei
cs.LG updates on arXiv.org arxiv.org
Abstract: Sparse Mixtures of Experts (SMoE) scales model capacity without significant increases in training and inference costs, but exhibits the following two issues: (1) Low expert activation, where only a small subset of experts are activated for optimization. (2) Lacking fine-grained analytical capabilities for multiple semantic concepts within individual tokens. We propose Multi-Head Mixture-of-Experts (MH-MoE), which employs a multi-head mechanism to split each token into multiple sub-tokens. These sub-tokens are then assigned to and processed by …
abstract arxiv capabilities capacity concepts costs cs.ai cs.cl cs.lg expert experts fine-grained head inference inference costs low multi-head multiple optimization semantic small tokens training type
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