Interpreting Reasoning of Large Language Models via Partial Information Decomposition
Large reasoning models (LRMs) have achieved substantial improvements in solving complex mathematical problems, but often produce lengthy, repetitive, or erroneous reasoning trajectories. In this work, we introduce a new interpretability framework, SLIDER, to evaluate the quality of the reasoning process. SLIDER leverages an emerging body of work from information theory called Partial Information Decomposition to disentangle the information about the final answer between two consecutive reasoning steps into non-negative components: unique information (in preceding steps or current step), redundant information, and synergistic information. Building on this decomposition, we propose the *Ste...
| Authors | Barproda Halder, Qiuyi Zhang, Sanghamitra Dutta |
|---|---|
| Primary category | cs.IT |
| Published | 30 September 2026 |
| Last updated at source | 30 September 2026 |
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