Unresolvable Identifier

arXiv:2605.23811 · detector doi_compliance · cross_source · 2026-05-25 03:26:02.494930+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.5555/2980539.2980616' 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

M. Belkin and P. Niyogi, “Laplacian Eigenmaps and Spectral Tech- niques for Embedding and Clustering,” inAdvances in Neural Infor- mation Processing Systems (NeurIPS), vol. 14, 2001, pp. 585–591, doi: 10.5555/2980539.2980616

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.5555/2980539.2980616",
  "raw_excerpt": "M. Belkin and P. Niyogi, \u201cLaplacian Eigenmaps and Spectral Tech- niques for Embedding and Clustering,\u201d inAdvances in Neural Infor- mation Processing Systems (NeurIPS), vol. 14, 2001, pp. 585\u2013591, doi: 10.5555/2980539.2980616",
  "ref_index": 20,
  "verdict_class": "cross_source"
}