citation as first class entity in Zotero

[egonw]

Prof. Shotton proposed the CiTO some time ago, allowing people to indicate the meaning of a citation, e.g. whether the citing article disputes, supports the cited article, or if it uses method in or uses data from.

This annotation has not picked up, because there are not enough tools that support it. CiteULike was one of them, but seems abandoned. It would be great it Zotero would consider citations as first class entities too.

This is what CiTO looks like in CiteULike:

[zuphilip]

Currently, I use the COCI Rest API for OpenCitations data and there does not seem to exist that information currently, e.g. http://opencitations.net/index/coci/api/v1/citations/10.2174/138161206777585274 . How did you add this information to CiteULike?

[egonw]

Manually, I'm afraid. But that does make this a nice curated data set.

[zuphilip]

It is possible add more information in the attached notes such as any categorization of the citation relation. However, the notes will be overwritten currently, when retrieving again data from COCI.

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I just stumbled across an 3+ years old commit in zotero where it says:

Relations are now properties of collections and items rather than
first-class objects, stored in separate collectionRelations and
itemRelations tables with ids for subjects, with foreign keys to the
associated data objects.

I don't think that it differs much for any use case how it is saved in the database, but it is intersting that here in the commit message also the term "first-class objects" is used. Currently there are three relations defined: dc:relation, owl:sameAs, dc:replaces.