- From: Nathan <nathan@webr3.org>
- Date: Tue, 15 Feb 2011 00:06:19 +0000
- To: AWWSW TF <public-awwsw@w3.org>
- CC: Jonathan Rees <jar@creativecommons.org>, Tim Berners-Lee <timbl@w3.org>
Some additional notes I forgot (well hadn't written up properly, and still haven't!): qnames/curies would then be an alias for a namespace, and the ':' would not be part of the alias (/prefix), such that WebName ( http://www.w3.org/2000/01/rdf-schema , label ) Lexical <http://www.w3.org/2000/01/rdf-schema#label> Alias rdfs -> http://www.w3.org/2000/01/rdf-schema# ShortForm ( rdfs , label ) Lexical rdfs:label As for properties like those in FOAF and dcterms, you wouldn't be able to shorten them (using existing URIs), you could still use the properties though because: WebName ( http://xmlns.com/foaf/0.1/name , '' ) Lexical Forms <http://xmlns.com/foaf/0.1/name> <http://xmlns.com/foaf/0.1/name#> When applied to RDF, then in built would be the meaning: label, as described by http://www.w3.org/2000/01/rdf-schema for the WebName ( http://www.w3.org/2000/01/rdf-schema , label ) <http://www.w3.org/2000/01/rdf-schema#label> although "defined by" or "named by" or "according to" may be more accurate..? This might(?) add in some inbuilt provenance, and also would make owl:sameAs and related quite interesting (and perhaps more in-line with usage) Lots of other "effects", it would force consistency of naming in things like rdfa, because <div id="foo" about="#foo"> would both create the same webname and thus need to be consistent for follow your nose. It would also then mean that things like <link rel="stylesheet" href="css.css" /> would create the triple: [] xhv:stylesheet css.css . likewise xhv:license unless a subject was specifically set etc.. Too much to cover, and I may have gone down yet another non-sense path - so will wait for feedback. Best, Nathan Nathan wrote: > Hi Guys, > > Please do read over the following and let me know what you think - might > be somewhat of a different approach -> > > [[[ > > Problem Statement and Background. > > The Web has long since provided names as a way of referring to things, > from time to time the specification of these names has had to be > revised, in order to match their usage on the Web as it evolves. > > With the rise of the Semantic Web, Media Fragments and Web Applications, > the usage of these names, especially http names, has changed to become > either inconsistent with the current URI specification or their usage is > simply unspecified. > > A side effect of this new usage, is that various communities have > differing opinions on just what a URI can or does refer to, and on how > those URIs can be used. This leads to tensions between communities which > are trying to converge, and in the worst case threatens the evolution of > those communities and their respective technologies. > > The web communities using these URIs share two common requirements, they > need to use absolute URIs to refer to network accessible resources, and > they require some form of indirect referencing, frequently turning to > fragment identifiers for this purpose. > > One of the most contended uses of URIs, is when they are used to refer > to abstract concepts or things evoked by the processing of > representations, for example: > > - A thing which is described within a representation, i.e. a person. > - A particular application state or recomposable view provided by the > application. > - Some particular scene within a movie. > > Contentions are usually particularly high when a URI of the absolute-URI > form is used for this purpose. > > In order to address this problem, it is suggested that a new class of > Web Names is needed. A class which is disjoint with the current set of > names (URIs/IRIs), fully compatible with those names, and which models > existing naming conventions. > > > Proposal - Web Names. > > Web Names provide a web friendly way of referring to things, each > WebName is a 2-tuple comprising of a namespace and a name. > > WebName = ( namespace , name ) > > The namespace part of a WebName takes the syntactic form of an > absolute-IRI, the namespace typically refers to a network accessible > resource. > > Each namespace has an infinite pool of locally scoped references, within > different contexts there often exists a need to expose one of those > references, for example: > - a reference to something which is described > - a reference to a particular state or information view > - a reference to a function or a variable > - a reference to a particular time sequence and area within a video > > The name part of a WebName provides a way to expose these indirect > references, the name can take the syntactic form of the primary-ref (an > empty string) or a reference (a string consisting of one or more > characters), the name provides an anchor to refer to things named within > a namespace. > > WebNames have the following syntax: > > web-name = namespace local-name > > namespace = absolute-IRI > > local-name = [ "#" ] primary-ref / "#" reference > > primary-ref = 0<ipchar> > > reference = 1*( ipchar / "/" / "?" ) > > > Since WebNames are 2-tuples and IRIs are strings, the value space of > WebNames is completely disjoint with the value space of IRIs, however, > the lexical form of each WebName is also a valid IRI, as such: > > IRI = http://example.com/foo/bar#baz1 > \________________________/ \__/ > | / > WebName = ( namespace , name ) > > By sharing a lexical form which always produces a valid IRI, WebNames > are fully compatible with the deployed web technologies, require no > changes to be made, and are backwards compatible with existing IRIs > which have been minted/used for the purpose of indirect referencing. > > Due to WebNames being 2-tuples, they cannot be dereferenced, this serves > to null and void many of the most complicated and contentious issues > outlined earlier, WebNames have been designed in such a way so that > communities can opt-in to using them and focus on converging their > technologies rather than trying to answer unanswerable questions. > > It is often the case that a network accessible resource is configured to > provide information primarily about a single thing, for this purpose a > WebName consisting of a namespace and a primary-ref can be used. > > When the name part of a WebName is the primary-ref, then the hash ("#") > is optional, such that the WebName: > > ( "http://example.com/foo/bar" , "" ) > > can be specified using either of the following lexical forms: > > http://example.com/foo/bar# > http://example.com/foo/bar > > and such that both those lexical forms encode the same WebName. > > ]]] > > Still needs work, especially on the text, but I think that's enough to > get across what I'm proposing in the meantime. Thoughts and feedback > more than appreciated. > > Best, > > Nathan > > >
Received on Tuesday, 15 February 2011 00:08:18 UTC