FoLiA to W3C Web Annotations conversion

[proycon]

Developments regarding annotation within the CLARIAH-PLUS project seem to converge on the use of W3C Web Annotations as a standardized means of sharing decentralized annotations; and more generically, the use of Linked Open Data.

To make transitions possible to these data models, conversion from FoLiA XML to Web Annotations need to be implemented. This also requires that the FoLiA vocabulary itself is formalized better, as per issue #4. Web Annotations will only provide the generic framework, FoLiA-specific vocabulary it still relevant in what is called the 'annotation body' in the web annotation model.

This issue relates to the generic use case described here: https://github.com/CLARIAH/clariah-plus/blob/main/use-cases/cases/folia-lod.md

A tool needs to be implemented that:

• splits the text from the annotations (so we can move to a strict stand-off model)
• expresses all FoLiA annotations in terms of Web Annotations.

Prior work that may be partially reusable for this is the work on Salt interoperability; #85 .

Eventually, the reverse may also be needed, a conversion from Web Annotations to FoLiA, but this is much harder to accomplish, and will only work if the Web Annotations adhere to the vocabulary defined by FoLiA.

[proycon]

This will probably be handled via the STAM tooling now.