Draft on the Fly: Adaptive Self-Speculative Decoding using Cosine Similarity

Michael R. Metel; Peng Lu; Boxing Chen; Mehdi Rezagholizadeh; Ivan Kobyzev

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arXiv · 2410.01028

Draft on the Fly: Adaptive Self-Speculative Decoding using Cosine Similarity

Michael R. Metel·Peng Lu·Boxing Chen·Mehdi Rezagholizadeh·Ivan Kobyzev

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Abstract

We present a simple on the fly method for faster inference of large language models. Unlike other (self-)speculative decoding techniques, our method does not require fine-tuning or black-box optimization to generate a fixed draft model, relying instead on simple rules to generate varying draft models adapted to the input context. We show empirically that our light-weight algorithm is competitive with the current SOTA for self-speculative decoding, while being a truly plug-and-play method.

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Michael R. Metel, Peng Lu, Boxing Chen, Mehdi Rezagholizadeh, Ivan Kobyzev. 2024-10-01. Draft on the Fly: Adaptive Self-Speculative Decoding using Cosine Similarity. https://arxiv.org/abs/2410.01028

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