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---
title: "Multi-Trajectory Inference多轨迹推理"
created: 2026-05-23
updated: 2026-05-23
type: concept
tags: [reasoning, multi-trajectory, inference, parallel]
sources: [raw/papers/gram-generative-recursive-reasoning-2026.md]
confidence: medium
---
# Multi-Trajectory Inference
> GRAM 的核心推理范式:不沿单一路径精炼,而是采样**多条潜在推理轨迹**,在轨迹间维持多个假设和替代策略。
## 为什么需要多轨迹
现有确定性 [[recursive-reasoning-models|RRM]] 的关键失败模式:
- 单一路径可能陷入次优吸引子
- 无法同时探索多个有效解
- 推理路径空间被坍缩为单点
## GRAM 的实现
- 推理过程 = 从 p(z_T|x) 采样
- 每次采样产生一条完整轨迹
- 多条轨迹 -> p(y|x) 的蒙特卡洛估计
- 轨迹间可并行(天然适合 batch
## 与多解问题的关系
在 [[multi-solution-recovery|多解恢复]] 场景中,多轨迹推理天然优势:
- 不同轨迹收敛到不同有效解
- 一次运行恢复整个解集
- 无需顺序尝试
## 相关概念
- [[stochastic-latent-trajectory]]
- [[inference-time-scaling]]
- [[width-based-scaling]]
- [[gram-generative-recursive-reasoning|GRAM]]