Imperial College London

Henry Rzepa

In recent years, findable data has become ever more important (the
**[F]{style="color: #ff0000;"}** in FAIR). Here I test that
[**F**]{style="color: #ff0000;"} using the DataCite search service.

Firstly an introduction to this service. This is a metadata database
about datasets and other research objects. One of the properties
is [**`relatedIdentifier`**]{style="color: #ff0000;"} which records
other identifiers associated with the dataset, being say the DOI of any
published article associated with the data, but it could also be
pointers to related datasets.

One can query thus:

1.  [[`https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:*`](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:*){target="_blank"
    rel="noopener noreferrer"}]{.small}  
    which retrieves the very healthy looking **6,179,287** works.
2.  One can restrict this to a specific publisher by the DOI prefix
    assigned to that publisher:  
    [[`?query=relatedIdentifiers.relatedIdentifier:10.1021*`](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1021*){target="_blank"
    rel="noopener noreferrer"}]{.small}  
    which returns a respectable **210,240** works.
3.  It turns out that the major contributor to FAIR currently are
    crystal structures from the CCDC. One can remove them from the
    search to see what is left over:  
    [[`?query=(relatedIdentifiers.relatedIdentifier:10.1021*)+NOT+(identifier:*10.5517*)`](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1021*)+NOT+(identifier:*10.5517*)){target="_blank"
    rel="noopener noreferrer"}]{.small}   
    and one is down to **14,213** works, of which many nevertheless
    still appear to be crystal structures. These may be links to other
    crystal datasets.

I have performed searches **2** and **3** for some popular publishers of
chemistry (the same set that were [analysed
here](https://www.ch.imperial.ac.uk/rzepa/blog/?p=20468)).

|           |                                                                                                  |                                                                                                                              |
|-----------|--------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------|
| Publisher | Search 2                                                                                         | Search 3                                                                                                                     |
| ACS       | [210,240](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1021*) | [14,213](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1021*)+NOT+(identifier:*10.5517*)) |
| RSC       | [138,147](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1039*) | [1,279](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1039*)+NOT+(identifier:*10.5517*))  |
| Elsevier  | [185,351](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1016*) | [56,373](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1016*)+NOT+(identifier:*10.5517*)) |
| Nature    | [12,316](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1038*)  | [8,104](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1038*)+NOT+(identifier:*10.5517*))  |
| Wiley     | [135,874](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1002*) | [9,283](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1002*)+NOT+(identifier:*10.5517*))  |
| Science   | [3,384](https://search.datacite.org/works?query=relatedIdentifiers.relatedIdentifier:10.1126*)   | [2,343](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1126*)+NOT+(identifier:*10.5517*))  |

These publishers all have significant numbers of datasets which at least
accord with the **F** of FAIR. A lot of data sets may not have metadata
which in fact points back to a published article, since this can be
something that has to be done [only when the DOI of that article
appears](https://www.ch.imperial.ac.uk/rzepa/blog/?p=20634), in other
words AFTER the publication of the dataset. So these numbers are
probably low rather than high.

How about the other way around? Rather than datasets that have a journal
article as a related identifier, we could search for articles that have
a dataset as a related identifier?

4.  [[`?query=(identifier:*10.1039*)+AND+(relatedIdentifiers.relatedIdentifier:*)`](https://search.datacite.org/works?query=(identifier:*10.1039*)+AND+(relatedIdentifiers.relatedIdentifier:*)%0A){target="_blank"
    rel="noopener noreferrer"}]{.small}  
    returns rather mysterious **nothing found**. It might also be that
    there is no mapping of this search between the CrossRef and DataCite
    metadata schemas.
5.  And just to show the searches are behaving as expected:  
    [[`?query=(relatedIdentifiers.relatedIdentifier:10.1021*)+AND+(identifier:*10.5517*)`](https://search.datacite.org/works?query=(relatedIdentifiers.relatedIdentifier:10.1021*)+AND+(identifier:*10.5517*)){target="_blank"
    rel="noopener noreferrer"}]{.small}  
    returns 196,027 works.

It will also be of interest to show how these numbers change over time.
Is there an exponential increase? We shall see.

Finally, we have not really explored adherence to eg the **AIR** of
**FAIR**.  That is for another post.

::: {.wp_orcid_field}
[https://orcid.org/0000-0002-8635-8390](https://orcid.org/0000-0002-8635-8390){target="_blank"
rel="author"}
:::


In recent years, findable data has become ever more important (the
<strong>
 F
</strong>
in FAIR). Here I test that
<strong>
 F
</strong>
using the DataCite search service. Firstly an introduction to this service. This is a metadata database about datasets and other research objects.

Messaggi di Rogue Scholar

A search of some major chemistry publishers for FAIR data records.