Dimensions of online identity (about:me)

Ongoing discussion on how social accounts should be represented in schema.org is quite interesting to follow. I've not yet put directly my pinch of salt in this soup, just posted a side note on Google+, which triggered a small forking debate. I'm confident enough in people at schema.org to come out with some pragmatic decision, hence as +Dan Brickley likes to say those days, I don't worry too much. 

But underneath the technical issues, arise some good questions about online identity. Some people in that discussion seem to consider that their social accounts are not really identifying them. In a recent post, I defended the opposite view that URIs of social profiles are maybe the most representative of the online identity, and should be used as primary URIs at least in contexts where social interaction is at stake. I would like to go a little further in this analysis.

The following diagram is inspired by the work of Fanny Georges, with whom I had a few exchanges back in 2009 about those subjects of online identity. For those who read French, you can find some of the original concepts in this paper (see diagram on page 3), where she introduces the notions of declarative identity, active identity, and computed identity. I come out with a slightly different representation, but I wanted to acknowledge the source of most concepts in the picture.

This diagram defines two dimensions of the online identity : a personal-social axis, and a declarative-active one. Each corner of the diagram represents a combination of two poles of those axes. You can figure yourself easily where any resource linked somehow to you will fit, but better clarify by some examples :

Bottom left you find your good old' 96 web page : been there, done that, my home, my kids, my research papers, my collection of old bikes, whatever. All chosen and made by you. Today you will find there a static online CV, for example.

Upper left contains anything said online about you, if you are (un)happy enough to be a public person : articles about you, photographs and videos, library records of your publications, a Wikipedia article about you if you are notable enough (unless you have mingled into its redaction, in which case it will be somewhere on the middle left).

Bottom right contains the traces of your individual interactions on the Web : the pages you visit, the searches you perform, the transactions you make etc. This part of your identity is split on many servers. A piece at your bank, a piece on Amazon, a piece at Google etc. This is the most obscure and frightening part of your identity, because you have no real control on that. Many systems know many things about you, that you might have forgotten.

Upper right contains all the interactions you have on the social Web : FB wall, comments on you blog posts, retweets, GMail etc.

Orthogonal to those two axes is whatever is computed from those data. Many things have been computed behind the scenes long ago from your personal activity (bottom right) : cookies on your browser, suggestions from Amazon, and all sorts of adware or malware entering your computer. Things computed from the social-active upper right are suggestions (friends, books ..) and anything Google or Facebook or whoever "thinks" you would like to do, read, buy etc.

The Semantic Web on the other hand, has been interested mainly in computing on declarative identity : DBpedia descriptions (upper left), FOAF profiles (bottom left). 

Google, for the Knowledge Graph, seems to gather stuff from all over the place : what I say and what I do, what others say about me and what other do in interaction with me. And at the end of the day, even if it's scary to see all this stuff put together and crunched by mysterious algorithms on Big G servers, all together it might yield a more balanced view of my identity than any of its aspects. That's why I take my Google+ URI to be as close as possible to the "about:me" node in the center of the diagram.

[Added 2014-04-14] See also Cybernetics and Conversation. Quote from the reference article (1996) 

Thus we find ourselves being constructed (defined, identified, distinguished) _by_ that conversation. From this point-of-view, our selves emerge as a consequence of conversation. Expressed more fully, conversation and identity arise together.

• Follow-up and comments on Google+

Query + Entity = Quentity

Neologisms are cool, particularly those of the portmanteau kind. Taking two old words and biding them together into a new hybrid semantic species is indeed as exciting, tricky and risky as tree grafting. And it takes some years, either for words or for trees, to figure out success or failure. Will you eventually harvest any fruit, will the hybrid survive at all? Nine years ago I introduced hubjects, and four years before that it was the semantopic map. Neither of those have grown in the expected direction or yielded the expected fruits, although they are both alive and well. Those poor results will not prevent me to try a new grafting experience with quentities, and let's meet here after 2020 under this new tree, and enjoy the fruits, if any.

So, what is this new semantic graft all about? I've ranted here last year about Google not exposing public linked data URIs for its Knowledge Graph entities, and defining linked entities jus as yet other queries. A similar criticism applies to the Bing version of the Knowledge Graph I just invited yesterday to play in this blog. But thinking twice about it, I wonder now if queries are not the right way, and maybe the best way, to consider entities in the Web of data. After all, many (most) URIs in the linked data cloud actually resolve to a query behind the scene, even if they look like plain vanilla URIs. URIs at DBpedia, Freebase, VIAF, WorldCat, OBO, Geonames (just to name a few) are deferenced through some query on some data base, which might be or not a SPARQL query on a triple store. 

Let's take this query which you can pass to the DBpedia SPARQL endpoint.

SELECT DISTINCT ?mag ?quake
WHERE
{
?quake  dbpprop:magnitude  ?mag
FILTER (contains(str(?quake), "earthquake"))
FILTER (contains(str(?quake), "/20"))
FILTER (?mag > 7)
FILTER (?mag < 10)
}
ORDER BY DESC(?mag)

I've tweaked the filters in order to cope with the quite messy state of earthquakes data in DBpedia : no single class nor category for earthquakes, no consolidation of datatype in the values of magnitude (hence the max value filter), date absent or in weird formats, but fortunately quite standard URI fragment syntax (every 21st century earthquake has a URI starting with http://dbpedia.org/resource/20 and containing "earthquake"). Default explicit semantic filters, use syntactic ones ... if you know the implicit semantics of the syntax, of course.

Granted, this query is as ugly as the data themselves are, but the result is not that bad and one could proudly call this "List of major earthquakes in the 21st century, sorted by decreasing magnitude".

Now I've encapsulated the query on DBpedia endpoint into a tiny URI. Does http://bit.ly/1lNkb0R qualify as a URI for an entity in the common meaning of "named entity"? One can argue forever to know if that "List of major earthquakes in the 21st century" is or is not an entity, but in my opinion it is one, no more no less than every individual earthquake in that list (the ontological status of an individual earthquake is a tricky one, too, if you think about it). 

One can argue also that this entity is a shaky one, because the result of this query is bound to change. The current list in DBpedia might be inaccurate or incomplete, some instances might escape the filter for all sort of obvious reasons, and obviously new major earthquakes are bound to happen in this century. Moreover, a stable meaning for this URI depends on the availability and stability of the bit.ly redirection service, on the availability of the DBpedia SPARQL endpoint, on the stability of Wikipedia URI policy and DBpedia ontology. Given all those particularities, let's assume we have a new kind of entity, defined by a query, that I propose to call for this very reason a quentity (shortcut for query entity), and an associated URI which I would gladly call a qURI (shortcut for query URI).

This qURI of course makes sense only as long as the technical context in which you can perform it is available. But is it different for any other kind of URI? To figure what a URI means in the Web of data, you have to use a HTTP GET, which is nothing more than a query over the global data base which is the Web, and what you GET generally depends on the availability and stability of as many pieces of hardware, software and data as in the above example. 

Indeed any URI can be seen, no more no less than the above bit.ly one, as an encapsulated query, making sense only when it's launched across the Web. And is not the elusive entity represented (identified) by this URI better seen as the query itself rather than as the query result? The query is permanent, whereas the query result is dependent on the everchanging client-server conversation context. 

So, if you want some kind of permanence in what the URI defines or identifies or represents (pick your choice), look at the query itself, not at the result. If you abide by this strange but inescapable conclusion, every entity in the Web is a quentity, and its URI is a qURI.

Follow-up discussion on Google+

Added 2014-04-09 : In the G+ discussion is introduced another and certainly better example to make my point : http://bit.ly/R2e3VV, a SPARQL CONSTRUCT yielding the same list in n3, making clear that the RDF description one GET from this URI does not, and cannot, include any triple describing the URI itself.

Bing Knowledge Graph

I've added the Bing Knowledge Graph widget to this blog, hoping that the introduction of Microsoft code is not a violation of the terms and conditions of Blogger. I guess Google will provide something similar pretty soon, based on its own Knowledge Graph. I wish there was some equivalent, non-proprietary widget leveraging entities in the Linked Open Data cloud.

The pages in this blog do not include many entities, though, and some results will certainly look funny. But I could not let pass this new step towards the Web of entities without having a try at it. Browsing around the pages, I noticed that the notion of "entities" is quite liberal, since for example "Philosophy" and "Semantic Web" are recognized, which is good news. Just everything can be an entity, as long as it can be identified.

[2014-07-21 : end of the experiment]