From Chains to Trees: Parent-Conditioned Drafting for Semi-Autoregressive Speculative Decoding

arXiv:2608.02123 · cs.CL · Submitted 2026-08-03 · Read on arXiv

Zixian Li, Tong Li, Chi Xie, Xiaohui Song, Haonan Lu

cs.CL

Submitted: 2026-08-03

Code: https://github.com/tatsu-lab/stanford_alpaca

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Verification — 37× in this paper · explained in 2 episodes
• Speculative Decoding — 17× in this paper · explained in 2 episodes
• Benchmark — 10× in this paper · explained in 2 episodes
• Block Diffusion — 6× in this paper · explained in 2 episodes
• Pruning — 6× in this paper · explained in 4 episodes
• Verifier — 4× in this paper · explained in 2 episodes
• Ablation — 3× in this paper · explained in 1 episode
• Decode — 2× in this paper · explained in 2 episodes
• Transformer — 2× in this paper · explained in 2 episodes
• Ablation Studies — 1× in this paper · explained in 1 episode
• Adaptive Draft Tree Structure — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• KV cache — 1× in this paper · explained in 3 episodes
• LLM-as-a-Judge — 1× in this paper · explained in 3 episodes

Sources

• Program Synthesis with Large Language Models
• Accelerating Large Language Model Decoding with Speculative Sampling
• DFlash: Block Diffusion for Flash Speculative Decoding
• Evaluating Large Language Models Trained on Code
• DSpark: Confidence-Scheduled Speculative Decoding with Semi-Autoregressive Generation
• Training Verifiers to Solve Math Word Problems
• EAGLE-3: Scaling up Inference Acceleration of Large Language Models via Training-Time Test
• Accelerating Speculative Decoding with Block Diffusion Draft Trees
• TAPS: Target-Aware Prefix Tree Selection for Diffusion-Drafted Speculative Decoding
• Qwen3 Technical Report

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