Unresolvable Identifier

arXiv:2605.07865 · detector doi_compliance · cross_source · 2026-05-19 11:28:03.184828+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1007/bf00992696.pdf' 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

Ronald J Williams. Simple statistical gradient-following algorithms for connectionist reinforce- ment learning.Machine learning, 8(3):229–256, 1992. URL https://link.springer.com/ content/pdf/10.1007/BF00992696.pdf

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1007/bf00992696.pdf",
  "raw_excerpt": "Ronald J Williams. Simple statistical gradient-following algorithms for connectionist reinforce- ment learning.Machine learning, 8(3):229\u2013256, 1992. URL https://link.springer.com/ content/pdf/10.1007/BF00992696.pdf",
  "ref_index": 43,
  "verdict_class": "cross_source"
}