Unresolvable Identifier

arXiv:2604.18805 · detector doi_compliance · cross_source · 2026-05-20 03:39:19.645394+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1073/pnas.2215907120(2023' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

Mitchell, M. & Krakauer, D. C. The debate over understanding in AI’s large language models.Proceedings of the National Academy of Sciences120. http://dx.doi.org/ 10.1073/pnas.2215907120(2023)

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1073/pnas.2215907120(2023",
  "raw_excerpt": "Mitchell, M. & Krakauer, D. C. The debate over understanding in AI\u2019s large language models.Proceedings of the National Academy of Sciences120. http://dx.doi.org/ 10.1073/pnas.2215907120(2023)",
  "ref_index": 53,
  "verdict_class": "cross_source"
}