Yes, tag type and actual tag.
Your understanding of the RDFa tags is quite right. Specifically, the title attribute is just a human-readable short description of the tag and encodes no additional information (so, nothing that you need to care about in network analysis). I’ll copy in here the current attribute field help text from the CKEditor styles creation form so you better see the make-up / syntax of the different fields:
- Element: For ethnographic tags, enter "span".
- Title: HTML title attribute to apply to the element; will appear as tooltip when mousing over markup in the editor and in the page on the frontend.
For ethnographic tags, put in tag type, a colon, and the full tag name so you can recognize it later. For example, “Topic: International labor migration”.
- Property: RDFa property attribute. For ethnographic tags, (1) let it contain the tag type, (2) use the "eoe:" prefix, (3) else use only lowercase characters and "-", for example: "eoe:topic" or "eoe:place"
- Resource: RDFa resource attribute. For ethnographic tags, (1) let it contain a short / abbreviated name of a specific tag of the type you put in "property", (2) use the "eoe:" prefix, (3) use square brackets, (4) else use only lowercase characters and "-", for example: "[eoe:intl-labor-migration]" for a topic tag."
- Class: [...] For ethnographic tags, you can leave this empty. Your tags will still be colored for you.
“The main question is nothing else is stored behind this “eoe” thing?”: Not sure I get this question. eoe is just a namespace I invented because it’s a technical requirement in RDFa attributes. It is just meant to be memorizable and means “Edgeryders Online Ethnography”.
“Now, is it possible for me to create a “view” in which I can associate “resource”, “property”, as I do with comments and posts, or should I recreate it on the fly from what I obtain?”: The resource attribute is the actual tag, meaning that the property attribute’s tag type information is not needed to identify a tag. Having both attributes in place is again just a technical detail to match the RDFa standard, which is IMHO a nice way for embedding the tagging in a web standards compliant way (making it safe to serve it as part of the regular content, as we do now).
So I understand your question as “Can I create a view that lists me all nodes where tag eoe:some-tag-name appears in?”. Unfortunately that seems not possible in Drupal without developing a custom module; Drupal is not well-suited to search based on DOM content, and the only thing coming close to what we need here (index_htmlattr) is only for Drupal 6. What seems potentially possible however (using views_xml_backend) is views like “list me all ethnographic tags appearing in node with ID <parameter here>”. I assume that this is not really helpful, since analyzing which tags appear in a certain XML piece is just a simple task (using XPath or whatever you like for that) in your script as well. But in case you want to experiment with views_xml_backend features, I’ll gladly install it for you here.