Unresolvable Identifier

arXiv:2605.00353 · detector doi_compliance · cross_source · 2026-05-19 18:14:47.234064+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1109/tkde.2020.3039758' 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

Guangda Huzhang, Zhen-Jia Pang, Yongqing Gao, Yawen Liu, Weijie Shen, Wen- Ji Zhou, Qing Da, Anxiang Zeng, Han Yu, Yang Yu, and Zhi-Hua Zhou. 2021. AliExpress Learning-To-Rank: Maximizing Online Model Performance without Going Online.IEEE Transactions on Knowledge and Data Engineering34, 8 (2021), 3941–3954. doi:10.1109/TKDE.2020.3039758

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1109/tkde.2020.3039758",
  "raw_excerpt": "Guangda Huzhang, Zhen-Jia Pang, Yongqing Gao, Yawen Liu, Weijie Shen, Wen- Ji Zhou, Qing Da, Anxiang Zeng, Han Yu, Yang Yu, and Zhi-Hua Zhou. 2021. AliExpress Learning-To-Rank: Maximizing Online Model Performance without Going Online.IEEE Transactions on Knowledge and Data Engineering34, 8 (2021), 3941\u20133954. doi:10.1109/TKDE.2020.3039758",
  "ref_index": 3,
  "verdict_class": "cross_source"
}