Why definitions, statistics, comparisons, procedures, examples, and code give engines different kinds of reusable material.
Answer-ready evidence appears in recognizable genres
The absorption study found higher mean influence for pages containing code, numbers, definition markers, comparison content, and how-to material. These forms map naturally to common information needs.
Definitions answer what something is; statistics answer how much; comparisons organize trade-offs; procedures explain how; examples make abstractions concrete.
A citation’s semantic role changes its value
Definitions and comparisons showed the highest mean influence among the study’s classified roles, followed by evidence, statistical data, examples, opinions, background, procedures, and reference-only citations.
The ordering is descriptive, but it demonstrates why two visible links can play very different epistemic roles.
Information-bearing citations do more work
A definition supplies content the answer needs. A comparison organizes a decision. Evidence substantiates a claim. A reference-only citation may simply direct the reader elsewhere.
Citation count records presence; semantic role helps explain participation.
Choose the evidence genre that matches intent
Definition queries need concise explanations. Comparison prompts need stable criteria and trade-offs. Transactional prompts need price, availability, specifications, and warranty. How-to prompts need prerequisites, steps, examples, and cautions.
No page needs every genre, and inventing evidence to fill a template defeats the purpose.
Questions about this topic
What is an evidence genre?+
It is a reusable information form such as a definition, statistic, comparison, example, procedure, or code block.
Which evidence genres showed higher influence?+
In one observational study, code, numerical information, definition markers, comparisons, and how-to material were associated with higher mean influence.
What is a semantic role?+
It describes the function a source plays in an answer, such as definition, comparison, evidence, background, or reference.
Should every article contain every evidence type?+
No. Evidence should follow the user’s information need and remain accurate, relevant, and supportable.
References
Sources are listed in APA 7 style. Preprints are identified as such and should not be treated as peer-reviewed findings unless separately published.
- Zhang, K., He, X., & Yao, J. (2026). From citation selection to citation absorption: A measurement framework for generative engine optimization across AI search platforms [Preprint]. arXiv. https://doi.org/10.48550/arXiv.2604.25707
- Aggarwal, P., Murahari, V., Rajpurohit, T., Kalyan, A., & Narasimhan, K. (2024). GEO: Generative engine optimization. In Proceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (pp. 5–16). Association for Computing Machinery. https://doi.org/10.1145/3637528.3671900
- Martinez, O. (2026). Optimizing visibility in generative engines: A critical survey of generative engine optimization (2023–2026) [Preprint]. arXiv. https://doi.org/10.48550/arXiv.2607.14035