Omkar2118/datasets huggingface dataset:
Citations to invalid DOI-identified entities obtained from processing DOI-to-DOI citations to add in COCI

This dataset contains a two-column CSV file, where the first column ("Valid_citing_DOI") contains the DOI of a citing entity retrieved in Crossref, while the second column ("Invalid_cited_DOI") contains the invalid DOI of a cited entity identified by looking at the field "reference" in the JSON document returned by querying the [Crossref API](https://api.crossref.org/ ) with the citing DOI.

These citations to invalid DOIs have been retrieved while processing Crossref data for adding open citations in [COCI, the OpenCitations Index of Crossref open DOI-to-DOI citations](http://opencitations.net/index/coci). The citations listed in the present dataset have not been added in COCI since they point to a non-resolvable cited document.

Introducing paper: Identifying and correcting invalid citations due to DOI errors in Crossref data