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D-REAL: Acceptance-Length Optimization with Unbiased Gradients for Speculative Decoding

Wei, Meng et al.
arXiv (All) · Papers
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artificial-intelligence
Speculative decoding efficiency depends on the number of consecutively accepted draft tokens, yet token-level training objectives do not directly optimize this quantity. We introduce D-REAL (Drafter Reinforcement of Expected Acceptance Length), a post-training method that directly optimizes expected
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