Composition Collapse: Stable Factual Knowledge Does Not Imply Compositional Reasoning
The paper discusses the concept of composition collapse in artificial intelligence, where stable factual knowledge does not guarantee effective compositional reasoning. It introduces a double-gate protocol to better assess the composition capabilities of AI models beyond aggregate metrics. The findings suggest that improvements in multi-hop reasoning should be evaluated with more nuanced metrics that account for atomic knowledge access.
- ▪The study reveals that models with similar atomic knowledge can exhibit vastly different compositional behaviors.
- ▪A new double-gate protocol is proposed to analyze composition failure more accurately.
- ▪The research indicates that many composition failures are due to computational constraints during generation rather than a lack of ability to compose.
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Record
| Original publisher | arXiv cs.AI |
| Canonical URL | https://arxiv.org/abs/2605.26789 |
| Publication time | Wed, 27 May 2026 00:00:00 -0400 |
| Retrieval time | 2026-05-27T04:07:56.398Z |
| Last seen | 2026-05-27T04:07:56.398Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | hP0E9iRSa-HI |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Computer Science > Artificial Intelligence arXiv:2605.26789 (cs) [Submitted on 26 May 2026] Title:Composition Collapse: Stable Factual Knowledge Does Not Imply Compositional Reasoning Authors:Zhe Yu, Wenpeng Xing, Yunzhao Wei, Jie Chen, Hongzhi Wang, Xuyang Teng, Meng Han View a PDF of the paper titled Composition Collapse: Stable Factual Knowledge Does Not Imply Compositional Reasoning, by Zhe Yu and 6 other authors View PDF HTML (experimental) Abstract:Post-training is routinely evaluated through aggregate benchmark scores that treat multi-hop reasoning as a single capability -- as if a model that answers more questions correctly must be better at assembling facts.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at arXiv cs.AI.