ThinkFuse: Trajectory-Aware Test-Time Fusion for Small Reasoning Models

Excerpt

arXiv:2610.07803v1 Announce Type: cross Abstract: Small reasoning models (SRMs) have shown strong performance on complex reasoning tasks by generating extended chain-of-thought trajectories, but they often fail to recover once their reasoning enters an erroneous path. Existing test-time fusion methods rely on local fusion signals to determine when to trigger fusion, which can be misled by transient uncertainty fluctuations and may reinforce unstable reasoning trajectories. We propose ThinkFuse,